report on comments f2005 — copyright, nfpa nfpa 79

79-1

Report on Comments F2005 — Copyright, NFPA NFPA 79 Report of the Committee on

National Electrical Code®

James W. Carpenter, ChairInternational Association of Electrical Inspectors, TX [E]

Rep. International Association of Electrical Inspectors

Mark W. Earley, Secretary (Staff-NV)National Fire Protection Association, MA

Jean A. O’Connor, Recording Secretary (NV)National Fire Protection Association, MA

James E. Brunssen, Telcordia, NJ [UT] Rep. Alliance for Telecommunications Industry Solutions Michael I. Callanan, National Joint Apprentice & Training Committee, MD [L] Rep. International Brotherhood of Electrical Workers William R. Drake, Marinco, CA [M] John R. Kovacik, Underwriters Laboratories Inc., IL [RT] William M. Lewis, Martinsville, IN [U] Rep. American Chemistry Council Jim Pauley, Square D Company/Schneider Electric, KY [M] Rep. National Electrical Manufacturers Association Michael D. Toman, MEGA Power Electrical Services, Inc., MD [IM] Rep. National Electrical Contractors Association John W. Troglia, Edison Electric Institute, WI [UT] Rep. Electric Light & Power Group/EEI

Alternates

Jeffrey Boksiner, Telcordia Technologies, Inc., NJ [UT] (Alt. to James E. Brunssen)Philip H. Cox, Bigelow, AR [E] (Alt. to James W. Carpenter)James M. Daly, General Cable, NJ [M] (Alt. to Jim Pauley)Stanley J. Folz, Morse Electric Company, WI [IM] (Alt. to Michael D. Toman)Palmer L. Hickman, National Joint Apprentice & Training Committee, MD [L] (Alt. to Michael I. Callanan)Neil F. LaBrake, Jr., Niagara Mohawk, a National Grid Company, NY [UT] (Alt. to John W. Troglia)Danny P. Liggett, Dupont Company, TX [U] (Alt. to William M. Lewis)Mark C. Ode, Underwriters Laboratories Inc., NC [RT] (Alt. to John R. Kovacik)

Nonvoting

Richard G. Biermann, Biermann Electric Company, Inc., IA [IM] (Member Emeritus) D. Harold Ware, Libra Electric Company, OK [IM] (Member Emeritus)

Committee Scope: This Committee shall have primary responsibility for documents on minimizing the risk of electricity as a source of electric shock and as a potential ignition source of fires and explosions. It shall also be responsible for text to minimize the propagation of fire and explosions due to electrical installations.

Report of the Committee on

Electrical Equipment of Industrial Machinery

Michael I. Callanan, ChairNational Joint Apprentice & Training Committee, MD [L]

Rep. International Brotherhood of Electrical Workers

William Anderson, The Procter & Gamble Company, OH [U]John F. Bloodgood, JFB Enterprises, WI [SE]Frank C. DeFelice, Jr., Cytec Industries, Inc., CT [U]Drake A. Drobnick, Visteon Corporation, MI [U]David Fisher, Allen-Bradley Company, Inc., WI [M] Rep. National Electrical Manufacturers AssociationGlyn R. Garside, TUV Rheinland of North America, Inc., IL [RT]Charles A. Goetz, Underwriters Laboratories Inc., IL [RT]Mark R. Hilbert, State of New Hampshire, NH [E] Rep. International Association of Electrical InspectorsThomas J. Kiihr, Jr., Delphi Corporation, MI [U]John Knecht, Intertek Testing Services NA, Inc., IL [RT]Gary J. Locke, Lockheed Martin Systems Integration, NY [U]Robert C. Monteith, Milacron Incorporated, OH [M] Rep. Society of the Plastics Industry, Inc.Larry D. Munson, Universal Instruments Corporation, NY [M]Carl E. Padgett, Jr., Milford, OH [M] Rep. The Association for Manufacturing TechnologyThomas Pilz, Pilz Automation Safety L.P., MI [M]Melvin K. Sanders, Things Electrical Co., Inc. (TECo., Inc), IA [U]George M. Schreck, Komatsu America Industries, LLC, IL [M]

Alternates

Michael H. Appold, Delphi Corporation, MI [U] (Alt. to Thomas J. Kiihr)James C. Carroll, Square D Company, TN [M] (Alt. to David Fisher)John H. Keinath, General Motors, MI [U] (Voting Alt. to GM Rep.) Christine Livingston, Visteon Corporation, MI [U] (Alt. to Drake A. Drobnick)Loren Mills, Demag Plastics Group, OH [M] (Alt. to Robert C. Monteith)Jim F. Pierce, Intertek Testing Services NA, Inc., OR [RT] (Alt. to John Knecht)Paul R. Warndorf, Association For Manufacturing Technology (AMT), VA [M] (Alt. to Carl E. Padgett)

Staff Liaison: Joseph V. Sheehan

Committee Scope: This Committee shall have primary responsibility for documents intended to minimize the potential hazard of electric shock and electrical fire hazards of industrial metalworking machine tools, woodworking machinery, plastics machinery and mass production equipment, not portable by hand. This Committee shall have primary jurisdiction but shall report to the Association through the Technical Correlating Committee of the National Electrical Code.

This portion of the Technical Committee Report of the Committee on National Electrical Code� is presented for adoption.

This Report on Comments was prepared by the Technical Committee on Electrical Equipment of Industrial Machinery, and documents its action on the comments received on its Report on Proposals on NFPA 79, Electrical Standard for Industrial Machinery, 2002 edition, as published in the Report on Proposals for the 2005 November Meeting.

This Report on Comments has been submitted to letter ballot of the Technical Committee on Electrical Equipment of Industrial Machinery, which consists of 19 voting members. The results of the balloting, after circulation of any negative votes, can be found in the report.

This Report on Comments has also been submitted to letter ballot of the Technical Correlating Committee on National Electrical Code� which consists of 9 voting members; of whom 9 voted affirmatively.

79-2

Report on Comments F2005 — Copyright, NFPA NFPA 79

________________________________________________________________79-1 Log #42 Final Action: Accept in Part(Entire Document) ________________________________________________________________Submitter: William Anderson, The Procter & Gamble CompanyComment on Proposal No: 79-1Recommendation: Reconsider the original proposal. Retain the AIP to accept the change in 5.4.2 and extend the AIP to include the original proposal and any changes proposal by the task group formed to review proposal 79-3 (Log #158) to the misused terms “can and cannot” contained in the main text of this standard. And in 7.2.10.3 correct the vague term “might”; and in 10.3.1(1) clarify the vague use of the word “should” does not imply to negate mandatory action stated elsewhere. The details of the original recommended changes to replace the terms ‘can’ and ‘cannot’, “might” and “should” in the main text is contained in the original proposal published in the committee’s last ROP, and repeated and updated to reflect the changes noted within the ROP (see “data” following the Substation below).

Data:Section # Current text Change to Proposed change shown in context:

5.3.1.7 can occur occurs 5.3.1.7 Where two or more disconnecting means are pro-vided within the control enclosure for multiple supply cir-cuits, they shall be grouped in one location where prac-ticable. Protective interlocks for their correct operation shall be provided where a hazardous condition or damage to the machine or to the work in progress can occurs.

5.3.3.1(6b) that can be started start 5.3.3.1 Where the supply circuit disconnecting device is one of the types in 5.3.2 (1) through (5), the device shall fulfill all of the following requirements:

(6) Be rated for the application as follows: a. The ampere rating shall be at least 115 percent of the sum of the full-load currents required for all equipment that may be in operation at the same time under normal conditions of use.b. Where rated in horsepower, the horsepower rating shall be at least equal that which is defined by Table 430.151(B) of NFPA 70, National Electrical Code, for a locked rotor equivalent equal to the largest sum result-ing from the locked rotor currents of any combination of motors that can be started simultaneously and the full-load currents of the remaining motor and non-motor loads that can be operated at that time.

5.3.3.1(6b) that can be operated that operates 5.3.3.1 Where the supply circuit disconnecting device is one of the types in 5.3.2 (1) through (5), the device shall fulfill all of the following requirements:

(6) Be rated for the application as follows: a. The ampere rating shall be at least 115 percent of the sum of the full-load currents required for all equipment that may be in operation at the same time under normal conditions of use.b. Where rated in horsepower, the horsepower rating shall be at least equal that which is defined by Table 430.151(B) of NFPA 70, National Electrical Code, for a locked rotor equivalent equal to the largest sum result-ing from the locked rotor currents of any combination of motors that can be started simultaneously and the full-load currents of the remaining motor and non-motor loads that can be operated operates at that time.

5.4.1 can create creates 5.4.1 Means for removal of power shall be provided when prevention of unexpected start-up is required (e.g., during maintenance where the unexpected start-up of a machine can creates a hazard). Such means shall be as follows:

5.4.2 can be accomplished is accom-plished (or “shall be accom-plished”)

5.4.2 Removal of power can be is accomplished by the use of the supply circuit disconnecting means, additional devices conforming to 5.3.2, or other means (e.g., a con-tactor switched off by a control circuit).

79-3

Report on Comments F2005 — Copyright, NFPA NFPA 79 Section # Current text Change to Proposed change shown in context:

5.4.4 (2b) cannot is not to 5.4.4 Other means of removal of power shall be employed only for situations that include the following:(1) Routine exchange of parts, fixtures, and tools requir-ing no significant dismantling of the machine(2) Work on the electrical equipment where all of the fol-lowing conditions exist:a. There is no hazard arising from electric shock and burn.b. The switching off means cannot is not to be negated by the work.c. The work is of a minor nature (e.g., replacement of plug-in devices without disturbing existing wiring).d. There is no hazard arising from the unexpected ener-gizing of de-energizing of circuits.

6.2.1 that can only be removed

that is only removed by

6.2.1 Protection by Insulation of Live Parts. Live parts protected by insulation shall be completely covered with insulation that can is only be removed by destruction. Such insulation shall be capable of withstanding the mechanical, chemical, electrical, and thermal stresses to which it can is be subjected under normal operating con-ditions. Paints, varnishes, lacquers, and similar products are inadequate for protection against electric shock under normal operating conditions.

6.2.1 which it can be sub-jected

which it is subjected

6.2.1 Protection by Insulation of Live Parts. Live parts protected by insulation shall be completely covered with insulation that can is only be removed by destruction. Such insulation shall be capable of withstanding the mechanical, chemical, electrical, and thermal stresses to which it can is be subjected under normal operating con-ditions. Paints, varnishes, lacquers, and similar products are inadequate for protection against electric shock under normal operating conditions.

6.2.3 doors can be doors are capa-ble of being (Alternate: ”…non of the doors open unless…)

6.2.3 Enclosure Interlocking. When required by 5.3.1.4 each disconnecting means mounted within or adjacent to a control enclosure that contains live parts operating at 50 volts ac (rms value) or 60 volts dc or more shall be mechanically or electrically interlocked, or both, with the control enclosure doors so that none of the doors can be doors are capable of being opened unless the power is disconnected. Interlocking shall be reactivated automati-cally when all the doors are closed.

6.2.4(2) there cannot be any there is not any

6.2.4 Enclosure Access Where a qualified (skilled) per-son, using appropriate work practices, needs to enter an enclosure that does not have a disconnect, one of the fol-lowing conditions shall be met:(1) The use of a key or tool shall be required for opening the enclosure.(2) An enclosure door shall be permitted to be opened without the use of a key or a tool and without discon-nection of live parts only when all live parts inside are separately enclosed or guarded such that there cannot be is not any direct contact with live parts by a test finger.

6.4.2(4) terminals cannot exceed

terminals does not exceed

6.4.2 Sources for PELV. The source for PELV shall be one of the following:(1) A safety isolating transformer(2) A source of current providing a degree of safety equivalent to that of the safety isolating transformer (e.g., a motor generator with winding providing equivalent isolation)(3) An electrochemical source (e.g., a battery) or another source independent of a higher voltage circuit (e.g., a die-sel-driven generator)(4) An identified electronic power supply conforming to appropriate standards specifying measures to be taken to ensure that, even in the case of an internal fault, the volt-age at the outgoing terminals cannot does not exceed the values specified in 6.3.1.1(1)

7.2.1.1 can exceed exceeds 7.2.1.1 Overcurrent protection shall be provided where the current in a machine circuit can exceeds either the rating of any component in the circuit or the current car-rying capacity of the conductors in the circuit, whichever is the lesser value.

79-4


7.2.9 device can include device includes

7.2.9* Short-Circuit Interrupting Rating. The short-circuit interrupting rating shall be at least equal to the available fault current at the point of application. Where the short-circuit current to an overcurrent protective device can includes additional currents other than from the supply (e.g., from motors, from power factor correc-tion capacitors), these shall be taken into consideration.

7.2.10.3 where it can be deter-mined

where it is determined

7.2.10.3 Where the branch-circuit, short-circuit, and ground-fault protective device is selected not to exceed that allowed by 7.2.10.1 for the smallest rated motor, two or more motors or one or more motors and other load(s), with each motor having individual overload protection, shall be permitted to be connected to a branch circuit where it can be is determined that the branch-circuit short-circuit and ground-fault protective device will not open under the most severe normal conditions of service that might be is encountered.

7.2.10.3 service that might be encountered

service that is encountered

7.2.10.3 Where the branch-circuit, short-circuit, and ground-fault protective device is selected not to exceed that allowed by 7.2.10.1 for the smallest rated motor, two or more motors or one or more motors and other load(s), with each motor having individual overload protection, shall be permitted to be connected to a branch circuit where it can be is determined that the branch-circuit short-circuit and ground-fault protective device will not open under the most severe normal conditions of service that might be is encountered.

7.3.3.2 cannot be adequately is not ade-quately

7.3.3.2 Short-time-rated motors or high-reversing duty motors that cannot be is not adequately protected by external overload devices shall be protected by a thermal device mounted in the motor and sensitive to the tem-perature of the motor, or to both motor temperature and current.

7.4 can cause causes 7.4* Abnormal Temperature Protection. Resistance heating or other circuits that are capable of attaining or causing abnormal temperatures and, therefore, can causes a hazardous condition shall be provided with suitable detection to initiate an appropriate control response.

7.5.1 can cause causes 7.5.1 General. Where a supply interruption or a voltage reduction can causes a hazardous condition or damage to the machine or to the work in progress, undervoltage pro-tection shall be provided (e.g., to switch off the machine) at a predetermined voltage level. Where only a part of the machine or of the group of machines working together in a coordinated manner is affected by the voltage reduction or supply interruption, the undervoltage protection shall initiate appropriate control responses to ensure coordina-tion.

7.5.2 machine can allow machine allows

7.5.2 Undervoltage Protection. Where the operation of the machine can allows for an interruption or a reduction of the voltage for a short time period, delayed undervolt-age protection shall be permitted to be provided. The operation of the undervoltage device shall not impair the operation of any stopping control of the machine.

7.5.3 restart can cause restart causes 7.5.3 Restarting. Upon restoration of the voltage or upon switching on the incoming supply, automatic or uninten-tional restarting of the machine shall be prevented when such a restart can causes a hazardous condition.

7.8 voltage can cause voltage causes 7.8* Phase Sequence Protection. Where a phase loss or an incorrect phase sequence of the supply voltage can causes a hazardous condition or damage to the machine, protection shall be provided.

79-5


8.2.1(3) that can be caused that is caused 8.2.1 Grounding System. The equipment grounding (protective bonding) circuit shall consist of the following:(1) Equipment grounding (PE) terminal(s)(2) Conductive structural parts of the electrical equipment and the machine(3) Equipment grounding (protective) conductors and equipment bonding jumpersAll parts of the equipment grounding (protective bond-ing) circuit shall be capable of withstanding the highest thermal and mechanical stress that can be is caused by fault currents flowing in that part of the circuit.All exposed conductive parts of the electrical equipment and the machine(s) shall be connected to the equipment grounding (protective bonding) circuit.Exception: Small parts such as screws, rivets, and name-plates that are not likely to become energized shall not be required to be grounded.

9.2.5.2.2 safeguards cannot be applied

safeguards are not applied

9.2.5.2.2 On those machines where safeguards cannot be are not applied for certain operations, manual control of such operations shall be by hold-to-run controls together with enabling devices.

9.2.5.4.2.2 machine cannot tol-erate

machine does not tolerate

9.2.5.4.2.2 Emergency switching off shall be accom-plished by disconnecting the incoming supply circuit of the machine effecting a Category 0 stop. Where the machine cannot does not tolerate the Category 0 stop, it shall be necessary to provide other protection, (e.g., against direct contact) so that emergency switching off is not necessary.

9.4.1 equipment can cause equipment causes

9.4.1* General Requirements. Where failures or distur-bances in the electrical equipment can causes a hazardous condition or damage to the machine or the work in prog-ress, measures shall be taken to minimize the probability of the occurrence of such failures or disturbances

9.4.2.2.2 memory can result memory results

9.4.2.2.2 Where a memory is used, its functioning in the event of power failure shall be ensured (e.g., by using a nonvolatile memory) where such loss of memory can results in a hazardous condition.

10.2.3.1 it can be easily read it is easily read 10.2.3.1 A legend shall be provided for each operator interface device to identify its function and shall be locat-ed so that it can be is easily read by the machine operator from the normal operator position. The legends shall be durable and suitable for the operating environment.Exception: Emergency stop devices require no legend if they meet the requirements of 10.7.4

10.3.1 (1) task should be per-formed

task needs to be performed

10.3.1 Modes of Use. Indicator lights and icons of color graphic interface devices shall provide the following information:(1) Indication to attract the operator’s attention or to indi-cate that a certain task should needs to be performed. The colors RED, YELLOW (AMBER), GREEN, and BLUE are normally used in this mode.

11.2.3 which can affect which affects 11.2.3 Electrical Noise and Transient Suppression. Transient suppression, isolation, or other appropriate means shall be provided where the electronic equipment generates electrical noise or transients, which can affects the operation of equipment.

12.2.1.1 that they can be iden-tified

that they are identified

12.2.1.1 All items of control equipment shall be placed and oriented so that they can be are identified without moving them or the wiring.Where practicable, items that require checking or adjust-ment for correct operation or that are liable to need replacement, those actions shall be possible without dis-mantling other equipment or parts of the machine (except opening doors or removing covers).Terminals not associated with control equipment shall also conform to these requirements.

12.2.2.5 can be readily identi-fied

is readily iden-tified

12.2.2.5 Terminal groups for power circuits, associated control circuits, and other control circuits shall be permit-ted to be mounted adjacently, provided that each group can be is readily identified (e.g., by markings, by use of different sizes, by use of barriers, by colors).

79-6


12.4.11 dust can penetrate dust penetrates 12.4.11 Openings shall not be permitted between enclo-sures containing electrical equipment and compartments containing coolant, lubricating fluids, or hydraulic fluids, or compartments into which oil, other liquids, or dust can penetrates. This requirement shall not apply to electri-cal devices specifically designed to operate in oil (e.g., electromagnetic clutches) nor to electrical equipment in which coolants are used.

12.4.13 can attain attains 12.4.13 Equipment that, in normal or abnormal operation, can attains a surface temperature sufficient to cause a risk of fire or harmful effect to an enclosure material shall be one of the following:

12.4.13(1) temperatures as can be generated

temperatures that are gener-ated

12.4.13(1) Located within an enclosure that will withstand, with-out risk of fire or harmful effect, such temperatures as can be that are generated

12.4.13(3) material that can with-stand

material that withstands

12.4.13(3) Otherwise screened by material that can withstands, without risk of fire or harmful effect, the heat emitted by the equipment

13.1.1 that can exist that exist 13.1.1* General. Conductors, cables, and flexible cords shall be selected for the operating conditions and external influences that can exist. Conductors, cables, and flexible cords shall be identified for their intended use.

14.5.1.2 conductors can come conductors come

14.5.1.2 All sharp edges, flash, burrs, rough surfaces, or threads that the insulation of the conductors can come in contact with shall be removed from raceways (ducts) and fittings. Where necessary, additional protection consisting of a flame-retardant, oil-resistant insulating material shall be provided to protect conductor insulation.

15.4.1 means can be removed

means are removable

15.4.1 Each motor and its associated couplings, belts and pulleys, or chains and sprockets shall be mounted so that they are adequately protected from physical damage and are easily accessible for inspection, maintenance, adjust-ment and alignment, lubrication, and replacement. The motor mounting arrangement shall be so that all motor hold-down means can be are removedable and all ter-minal boxes are accessible. An adjustable base or other means of adjustment shall be provided when belt or chain drives are used.

15.7 rotation can produce rotation pro-duces

15.7 Direction Arrow. Where reverse rotation can pro-duces an unsafe condition, a direction arrow shall be installed. The arrow shall be adjacent to the motor and plainly visible.

17.4.2 equipment that can be in operation

equipment that is in operation

17.4.2 The full-load current shown on the nameplate shall not be less than the full-load currents for all motors and other equipment that can be is in operation at the same time under normal conditions of use. Where unusual loads or duty cycles require oversized conductors, the required capacity shall be included in the full-load current specified on the nameplate.

17.5.2 where it can be eas-ily read

where it is eas-ily read

17.5.2 Where a motor nameplate or connection diagram plate is not visible, additional identification shall be pro-vided where it can be is easily read.

18.7.5.2 device can be readily located

device is read-ily located

18.7.5.2 A cross-referencing scheme shall be used in con-junction with each relay, output device, limit switch, and pressure switch so that any contact associated with the device can be is readily located on the diagrams.

18.8.2 equipment can be pro-grammed

equipment is programmable

18.8.2 Where the operation of the equipment can be is programmedable, detailed information on methods of programming, equipment required, program verification, and additional safety procedures (where required) shall be provided.

Substantiation: The changes in the proposal 79-1 (Log #57) are needed, based on the Manual of Style 2003 edition Sub section 2.2.2 ‘Unenforceable Terms’, and Webster’s Collegiate Dictionary 10th (MOS: 2003, sub section 3.2.1.2) and the apparent intended meaning in the misuse of the terms ‘can’ and ‘cannot’ The use of ‘can’ and ‘cannot’ in the NFPA 79 2002, as shown in the details of proposal (79-1), has two possibilities neither meet the requirements if the (MOS 2003 subsection 3.2.1.1). One possible use of the terms ‘can’ and ‘cannot’ is as a transitive verb, which is an archaic use and thus should not be used in this standard, unless there is a special need for such archaic use which is deliberately intended, but that use also needs to be consistent with the requirements of MOS subsection 2.2.2 ‘Unenforceable terms’ requirements and 2.5.3 ‘Multiple meanings’ and defined. The second possibility to use the term ‘can’ or ‘cannot’ is as a verbal auxiliary and take the meanings of

either a form of power (e.g. potency, know how, capability, consequence) or a form of permitting (e.g. may or permission). The form of ‘can’ and ‘cannot’ as permission is not an option (MOS: 2003, subsection 2.2.1 Permissive for Alternative Terms”). A vague term in a requirement is interpreted as assuming the maximum (best or worst), normal, or minimum (best or worst) situation or condition is equally applied which is often not the intent of the requirement nor its application. The legitimate cases in NFPA 79 are where ‘can’ and ‘cannot’ is used as verbal auxiliary, provided it is defined (MOS 2003 subsection 2.5.3 ‘Multiple meanings’). But as is the case with many verbal auxiliaries, removing it will only simplify and improve the clarity of the requirement statement in the standard. The proposed revision, to be reconsidered, is to follow the NFPA manual of style and remove the improper and ambiguous uses of the terms ‘can’

79-7

Report on Comments F2005 — Copyright, NFPA NFPA 79 and ‘cannot’ as they have appeared in NFPA 79, the details of the proposed corrections remain in the original ROP proposal.Committee Meeting Action: Accept in Part The committee rejects the following portions of Comment 79-1: 5.3.1.7; 5.3.3.1(6)(b); 5.4.4(2)(b); 6.2.1; 6.2.1[second occurrence]; 6.2.3; 6.2.4(2); 6.4.2(4); 7.2.1.1; 7.2.10.3; 7.3.3.2; 7.5.1; 8.2.1(3); 9.2.5.2.2; 9.2.5.4.2.2; 10.2.3.1; 10.3.1(1); 11.2.3; 12.2.1.1; 12.4.11; 12.4.13(1); 12.4.13(3); 13.1.1; 14.5.1.2; 17.4.2; 17.5.2; and 18.7.5.2. For accept and accept in principle actions on other portions of this comment, see the following comments: 79-19; 79-20; 79-24; 79-25; 79-26; 79-29; 79-30; 79-32; 79-34; 79-37; 79-38; 79-39; 79-41; 79-43; 79-44; 79-45; 79-50; 79-51; 79-52; 79-56; 79-57; 79-59; 79-60; 79-71; 79-72; 79-73; 79-74; 79-77; 79-85; 79-86; 79-87; 79-93; 79-94; 79-95; and 79-96.Committee Statement: The committee reaffirms its position that some of the proposed text revisions already contain enforceable requirements and those portions of this comment are rejected for that reason. The committee has however accepted some portions of this comment which do add clarity and aid in enforceability.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-2 Log #51 Final Action: Accept in Principle in Part(Entire Document) ________________________________________________________________Submitter: William Anderson, The Procter & Gamble CompanyComment on Proposal No: 79-96Recommendation: Review the following Sheet B as reference to the recommendations listed in “Data” on the following pages.Substantiation: NFPA Manual of style 2004 1.8 taking into account 1.8.3.3 and the intended meaning and readability of the document Data:Sheet B Chapter 6 Section 3, Although the MOS allows for discontinuity of titles such as the “General” subsection 6.3.1. And with the title “General” the following subsection paragraphs do not seem to make logical sense, unless 6.3.2 and 6.3.3 would be come sub-subsection paragraphs under 6.3.1. Thus subsection paragraph 6.3.2 would be come sub subsection 6.3.1.2 and subsection paragraph 6.3.3 would become sub-subsection paragraph 6.3.1.3. Sheet B Chapter 12 (13 in ROP draft subsection 13.5.7) The sub section (ROP draft number) 13.5.7 Conductor /Terminal Compatibility is only partially related to the section on Conductor ampacity and more logically be placed in the (ROP draft Chapter 13) new renumbered document chapter 12 conductors, Cables and Flexible Cords, 12.1 “General” section 12.1 as a subsection 12.1.5 “Conductor / Terminal Compatibility”. Sheet B Chapter 12 (13 in ROP draft subsection 13.6.5) The sub section (ROP draft number) 13.6.5 Shielded Conductors New numbering 12.6.5 has no other sub paragraphs and thus does not need the title, suggest dropping the title and keep the paragraph numbered as shown (12.6.5) Sheet B Chapter 13 (14 in ROP draft subsection 14.4.3 Using the new Chapter 13 numbering (ROP draft number 14); The sub section paragraphs 13.4.3.(1 through 5 and 7) would become sub-sub-subsection numbered 13.4.3.1.(I through 6) paragraphs under the new sub subsection 13.4.3.1 General. The present sub-subsection on Cable handling systems (ROP Draft numbers 14.4.3.6 including 14.4.3.7) would fall under a new sub subsection 13.4.3.2 Cable handling system including the sub-sub-subsection paragraphs (new numbers) 13.4.3.2.(1 though 3 and 14.4.3.7 would become 13.4.3.2.4. and the table would be numbered 13.4.3.2.3 with reference in 13.4.3.2.3 to show the correction to the table reference. This is needed because the existing (old ROP draft 14.4.3.8 is not related to the cable handling system but 14.4.3.7 is related to cable handling system.

Sheet B Chapter XX Servo drives and (Servo) motors (in ROP draft)The proposed new chapter would make more sense to the reader if it were a moved entirely to its own subsection (new numbering) 14.9 retaining the agreed material in the proposed new chapter. However when looking at the proposed material xx.4.2 either as its own sub section (new numbering) 14.9.4 Motor circuit conductors or insert it as subsection 14.9.2, moving the overload protection subsection to sub section 14.9.3 and Motor over temperature protection to become subsection 14.9.4. In the ROP proposed numbered sub subsection and sub sub-subsection titled and untitled paragraph the hierarchy is not clear and the committee should review the intent, but on proposal would be to drop the title “XX.3.1 General and promote the sub sub-subsection paragraph XX.3.1.1 to XX.3.1 ( untitled [new numbering 14.9.3.1] and promote all the following sub sub-subsections up one and thus without going though all of them the last one (old ROP draft ) number XX.3.1.4.1 would be promoted to XX.3.4.1 or new number 14.9.3.4.1. If the chapter is to remain as a separate new chapter the arrangement of sections and subsection will still have to be addressed as the intended application for the requirements is not clear using the proposed structure. Committee Meeting Action: Accept in Principle in Part First, the proposed action to renumber Servo Drives and motors is rejected. Second, only the following is accepted by this comment: (1) Renumber ROP 79-64, Section numbers from 6.3.2 and 6.3.3 to 6.3.1.2 and 6.3.1.3. Change “This” to “These” in the second paragraph of 6.3.3. (2) Renumber Section 13.5.7 Conductor/Terminal Compatibility to Section 13.1.5. (3) Remove the title of Section 13.6.5 Shielded conductors. (4) Restructure Section 14.4.3 as follows: 14.4.3.2 changes to 14.4.3.1.1 14.4.3.3 changes to 14.4.3.1.2 14.4.3.4 changes to 14.4.3.1.3 14.4.3.5 changes to 14.4.3.1.4 14.4.3.7 changes to 14.4.3.2.4 14.4.3.8 changes to 14.4.3.1.5 (5) Restructure Section 14.4.3.6 as follows: 14.4.3.6 changes to 14.4.3.2 14.4.3.6.1 changes to 14.4.3.2.1 14.4.3.6.2 changes to 14.4.3.2.2 14.4.3.6.3 changes to 14.4.3.2.3 Table 14.4.3.6.3 changes to Table 14.4.3.2.3Committee Statement: The committee understands that the sole purpose of this comment is to assist NFPA editors in structuring some renumbered sections. The committee views the implementation of this comment by editors as non binding. See Comment 79-6 for action and statement on Servo Drives.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE

79-8


Chapter Section Subsection Sub-subsection Sub-sub-subsection

ROP Numbering

1 Administration 11. 1 Scope 1.11. 2 Purpose 1.21. 3 Application 1.31. 4 Specific Provisions

Other Than NFPA 791.4

1. 5 Specific Provisions Not Made in Relation to NFPA 70

1.5

1. 6 State of the Art 1.62 Referenced

Publications2

2. 1 General 2.12. 2 NFPA Publications 2.22. 3 Other Publications 2.32. 3. 1 ANSI

Publications2.3.1

2. 3. 2 ASTM Publications

2.3.2

2. 3. 3 IEC Publications 2.3.32. 3. 4 IEEE

Publications2.3.4

2. 3. 5 NEMA Publications

2.3.5

2. 3. 6 UL Publications 2.3.63 Definitions 33. 1 General 3.13. 2 NFPA Official

Definitions3.2

3. 3 General Definitions 3.34 General

Operating Conditions

4

4. 1 General considerations

4.1

4. 2 Electrical Components and Devices

4.2

4. 3 Electrical supply 4.34. 3. 1 General 4.3.14. 3. 2 Alternating

Current (ac) Supplies

4.3.2

4. 3. 2. 1 Voltage 4.3.2.14. 3. 2. 2 Frequency 4.3.2.24. 3. 2. 3 Harmonics 4.3.2.34. 3. 2. 4 Voltage

Unbalance (in 3-Phase Supplies)

4.3.2.4

4. 3. 2. 5 Voltage Impulses 4.3.2.54. 3. 2. 6 Voltage

Interruption4.3.2.6

4. 3. 2. 7 Voltage Dips 4.3.2.74. 3. 3 Direct Current

(dc) Supplies from Batteries

4.3.3

4. 3. 3. 1 Voltage 4.3.3.14. 3. 3. 2 Voltage

Interruption4.3.3.2

4. 3. 4 Direct Current (dc) Supplies from Converting Equipment

4.3.4

4. 3. 4. 1 Voltage 4.3.4.14. 3. 4. 2 Voltage

Interruption4.3.4.2

4. 3. 4. 3 Ripple (Peak- to-Peak

4.3.4.3

4. 4 Physical Environment and Operating Conditions

4.4

4. 4. 1 General 4.4.14. 4. 2 Electromagnetic

compatibility (EMC)

4.4.2

4. 4. 3 Ambient Operating temperature

4.4.3

4. 4. 4 Humidity 4.4.44. 4. 5 Altitude 4.4.54. 4. 6 Contaminants 4.4.6

79-9

Report on Comments F2005 — Copyright, NFPA NFPA 79 Chapter Section Subsection Sub-subsection Sub-sub-

subsectionROP Numbering

4. 4. 7 Non-ionizing radiation

4.4.7

4. 4. 8 Vibration, shock, and bump

4.4.8

4. 5 Transportation and storage

4.5

4. 6 Provisions for handling

4.6

4. 7 Installation and Operating Conditions

4.7

8 Available Fault Current

4.8

5 Incoming supply Circuit Conductor Terminations and Devices for Disconnecting and Removing Power

5

5. 1 Incoming Supply Circuit Conductor Terminations

5.1

5. 2 Grounding Terminal 5.25. 3 Supply Disconnecting

(Isolating) Means5.3

5. 3. 1 General 5.3.15. 3. 2 Type 5.3.25. 3. 3 Requirements 5.3.35. 3. 4 Operating

Handle5.3.4

5. 3. 5 Excepted Circuits

5.3.5

5. 4 Means for Removal of Power for Prevention of Unexpected Start-Up

5.4

5. 5 Devices for Disconnecting (Isolating) Electrical Equipment

5.5

6 Protection against electric shock

6

6. 1 General 6.16. 2 Protection against

direct contact6.2

6. 2. 1 Protection by Insulation of Live Parts

6.2.1

6. 2. 2 Protection by Enclosures

6.2.2

1 Direct Contact from Outside an Enclosure

6.2.2.1

6. 2. 3 Enclosure Interlocking

6.2.3

6. 2. 4 Enclosure Access

6.2.4

6. 3 Protection Against Electric Shock from Indirect Contact (Fault Conditions)

6.3

6. 3. 1 General 6.3.16. 3. 2 (untitled) double

insulation6.3.2

6. 3. 3 (untitled) automatic disconnection

6.3.3

6. 4 Protection by the use of Protective Extra Low Voltage PELV

6.4

6. 4. 1 General requirements

6.4.1

6. 4. 2 Sources for PELV

6.4.2

6. 5 Protection Against Residual Voltages

6.5

7 Protection of equipment

7

7. 1 General 7.17. 2 Overcurrent protection 7.27. 2. 1 General 7.2.1

79-10



7. 2. 2 Supply conductors

7.2.2

7. 2. 3 Power circuits 7.2.37. 2. 4 Control circuits 7.2.4

2. 4. 1 General 7.2.4.12. 4. 2 Conductor

Protection7.2.4.2

7. 2. 5 Receptacle (Socket) Outlets and Their Associated Conductors for Accessory Circuits

7.2.5

7. 2. 6 Lighting circuits 7.2.67. 2. 7 Transformers 7.2.77. 2. 8 Location of

overcurrent protective devices

7.2.8

7. 2. 9 Overcurrent protective devices

7.2.9

7. 2. 10 Rating and setting of overcurrent protective devices

7.2.10

2. 11 Resistance Heating Branch-Circuit Overcurrent Protection

7.2.11

2. 12 Programmable Electronic System Power Supply Input Overcurrent Protection

7.2.12

2. 13 Control Devices 7.2.132. 14 Common

Overcurrent Device

7.2.14

7. 3 Protection of motors against overheating

7.3

7. 3. 1 General 7.3.17. 3. 1. 1 Motors 7.3.1.17. 3. 1. 2 Adjustable

Speed (Electronic) and (Servo) Drives and Motors

7.3.1.2

7. 3. 2 Resetting 7.3.27. 3. 3 Number of

Overloads7.3.3

7. 4 Abnormal temperature protection

7.4

7. 5 Protection against supply interruption or voltage reduction and subsequent restoration

7.5

7. 5. 1 General 7.5.17. 5. 2 Undervoltage

Protection7.5.2

7. 5. 3 Restarting 7.5.37. 6 Overspeed Protection 7.67. 6. 1 Motor

Overspeed Protection

7.6.1

7. 6. 2 Equipment Overspeed Protection

7.6.2

7. 7 (Reserved) 7.77. 8 Phase sequence

protection7.8

7. 9 Protection against overvoltages due to lightning and to switching surges

7.9

79-11



7. 10 Power Factor Correction Capacitors

7.10

7. 10. 1 Overcurrent Protection

7.10.1

7. 10. 2 Discharge of Stored Energy

7.10.2

7. 10. 2. 1 Time of Discharge

7.10.2.1

7. 10. 2, 2 Means of discharge

7.10.2.2

8 Grounding8. 1 General 88. 1. 1 Applicability 8.1.18. 1. 2 Connections 8.1.28. 2 Equipment Grounding

(Protective Bonding) Circuit

8.2

8. 2. 1 Grounding System

8.2.1

8. 2. 1. 1 Equipment Grounding

8.2.1.1

8. 2. 1. 2 Equipment Grounding (Protective) Conductor Terminal

8.2.1.2

8. 2. 2 Equipment Grounding (Protective) Conductors and Bounding Jumpers

8.2.2

8. 2. 3 Continuity of the Equipment Grounding (Protective Bonding) Circuit

8.2.3

8. 2. 3. 1 (untitled) 8.2.3.18. 2. 3. 2 (untitled) 8.2.3.28. 2. 3. 3 (untitled) 8.2.3.38. 2. 3. 4 (untitled) 8.2.3.48. 2. 3. 5 (untitled) 8.2.3.58. 2. 3. 6 Doors or Covers 8.2.3.68. 2. 3. 7 (untitled) 8.2.3.78. 2. 3. 8 (untitled) 8.2.3.88. 2. 4 Exclusion

of switching devices

8.2.4

8. 2. 5 Equipment Grounding (Protective) Conductor Connecting Points

8.2.5

8. 3 Control Circuits 8.38. 4 Lighting Circuits 8.49 Control Circuits

and Control Functions

9

9. 1 Control circuits 9.19. 1. 1 Control circuit

supply9.1.1

9. 1. 2 Control circuit voltages

9.1.2

9. 1 AC Control Circuit Voltages

9.1.2.1

9. 2 DC Control Circuit Voltages

9.1.2.2

9. 1. 3 Protection 9.1.39. 4 Connection of

Control Circuit Devices

9.1.4

9. 2 Control functions 9.29. 2. 1 Start functions 9.2.19. 2. 2 Stop functions 9.2.29. 2. 3 Operating modes 9.2.39. 2. 4 Overriding

Safeguards9.2.4

9. 2. 5 Operation 9.2.59. 1 General 9.2.5.19. 2 Start 9.2.5.2

79-12



9. 3 Stop 9.2.5.39. 4 Emergency

Operations (Emergency Stop, Emergency Switching Off)

9.2.5.4

9. 1 Emergency Stop 9.2.5.4.19. 2 Emergency

Switching Off9.2.5.4.2

9. 5 Hold-to-Run Controls

9.2.5.5

9. 6 Two-Hand Control

9.2.5.6

9. 7 Enabling Control

9.2.5.7

9. 2. 6 Combined Start and Stop Controls

9.2.6

9. 2. 7 Cableless control

9.2.7

9. 2. 7. 1 General 9.2.7.19. 2. 7. 2 Control

Limitation9.2.7.2

9. 2. 7. 3 Stop Function 9.2.7.39. 2. 7. 4 Serial Data

Communication9.2.7.4

9. 2. 7. 5 Use of More Than One Operator Control Station

9.2.7.5

9. 2. 7. 6 Battery-Powered Operator Control Stations

9.2.7.6

9. 2. 8 Monitoring of Command Actions

9.2.8

9. 3 Protective interlocks 9.39. 3. 1 Reclosing or

Resetting of an Interlocking Safeguard

9.3.1

9. 3. 2 Exceeding Operating Limits

9.3.2

9. 3. 3 Operation of Auxiliary Functions

9.3.3

9. 3. 4 Interlocks Between Different Operations and for Contrary Motions

9.3.4

9. 3. 5 Reverse Current Braking

9.3.5

9. 3. 6 Protective Interlock

9.3.6

9. 4 Control Functions in the Event of Failure

9.4

9. 4. 1 General Requirements

9.4.1

9. 4. 2 Protection Against Unintended Operation Due to Ground (Earth) Faults and Voltage Interruptions

9.4.2

9. 4. 2. 1 Ground (Earth) Faults

9.4.2.1

9. 4. 2. 2 Voltage Interruptions

9.4.2.2

9. 4. 3 Control Systems Incorporating Software and Firmware Based Controllers

9.4.3

9. 4. 3. 1 Software Modifications

9.4.3.1

9. 4. 3. 2 Memory Retention and Protection

9.4.3.2

79-13



9. 4. 3. 3 Software Verification

9.4.3.3

10 Operator Interface and Control Devices

10

10. 1 General 10.110. 1. 1. Applicability 10.1.110. 1. 2 Location and

mounting10.1.2

10. 1. 2. 1 Control Devices 10.1.2.110. 1. 2. 2 Hand-Operated

Control Devices10.1.2.2

10. 1. 3 Protection 10.1.310. 1. 4 Position sensors 10.1.410. 1. 5 Portable and

pendant control stations

10.1.5

10. 1. 6 Operator Interface Devices

10.1.6

10. 1. 6. 1 Location of Operator Interface Devices

10.1.6.1

10. 1. 6. 2 Arrangement of Operator Interface Devices

10.1.6.2

10. 1. 7 Foot Operated Switches

10.1.7

10. 2 Push-buttons 10.210. 2. 1 Pushbutton

Actuators10.2.1

10. 2. 2 Colors 10.2.210. 2. 2. 1 Start or On 10.2.2.110. 2. 2. 2 Stop or Off 10.2.2.210. 2. 2. 3 Emergency Stop 10.2.2.310. 2. 2. 4 Alternate Action 10.2.2.410. 2. 2. 5 Abnormal

Conditions10.2.2.5

10. 2. 2. 6 Hold to Operate 10.2.2.610. 2. 2. 7 Reset 10.2.2.710. 2. 3 Legends 10.2.310. 3 Indicator lights and

displays10.3

10. 3. 1 Modes of Use 10.3.110. 3. 2 Colors 10.3.210. 3. 3 Flashing lights

and displays10.3.3

10. 4 Illuminated push-buttons

10.4

10. 5 Rotary control devices 10.510. 6 Start devices 10.610. 7 Emergency stop

devices10.7

10. 7. 1 Location and Operation

10.7.1

10. 7. 2 Types 10.7.210. 7. 3 Restoration of

Normal Function After Emergency Stop

10.7.3

10. 7. 4 Emergency Stop Actuators

10.7.4

5 Local Operation of the Supply Disconnecting Means to Effect Emergency Stop

10.7.5

10. 8 Devices for Emergency Switching Off

10.8

10. 8. 1 Location 10.8.110. 8. 2 Types 10.8.210. 8. 3 Deleted in ROP 10.8.310. 8. 4 Actuators 10.8.3

79-14



10. 8. 5 Local operation of the supply disconnecting means to effect emergency switching off

10.8.5

10. 9 Displays 10.911 Controlgear:

location, mounting, and enclosures

11

11. 1 General requirements 12.111. 2 Location and

mounting12.2

11. 2. 1 Accessibility and maintenance

12.2.1

11. 2. 2 Physical separation or grouping

12.2.2

11. 2. 3 Heating effects 12.2.311. 3 Degrees of protection 12.311. 4 Enclosures, Doors,

and Openings.12.4

11. 5 Spaces Around Control Cabinets and Compartments.

12.5

11. 5. 1 Working Space 12.5.111. 5. 2 Access 12.5.211. 6 Machine-Mounted

Control Equipment12.6

12 Conductors, Cables and Flexible Cords

13

12. 1 General requirements 13.11. 1 General 13.1.11. 2 Wire Insulation 13.1.21. 3 Type MI Cable 13.1.31. 4 Conductors and

Static Control13.1.4

12. 2 Conductors 13.22. 1 Conductor

Material13.2.1

2. 2 Stranded Conductors

13.2.2

2. 3 Constant Flexing 13.2.32. 4 Solid

Conductors13.2.4

2. 5 Printed Wire Assemblies

13.2.5

2. 6 Shielded Conductors

13.2.6

2. 7 Shielded Conductors

13.2.7

12. 3 Insulation 13.312. 4 Wire Markings 13.412. 5 Conductor Ampacity 13.5

5. 1 (untitled) 13.5.15. 2 (untitled) 13.5.25. 3 (untitled) 13.5.35. 4 (untitled) 13.5.45. 5 (untitled) 13.5.55. 6 (untitled) 13.5.65. 7 Conductor

/ Terminal Compatibility

13.5.7

12. 6 Conductor Sizing 13.66. 1 (untitled) 13.6.16. 2 (untitled) 13.6.26. 3 (untitled) 13.6.36. 4 (untitled) 13.6.46. 5 Shielded

Conductors13.6.5

12. 7. Conductors and Cables Used for Flexing Applications

13.7

7. 1 General 13.7.17. 2 Mechanical

rating13.7.2

79-15



7. 3 Current-carrying capacity of cables wound on drums

13.7.3

12. 8 Cords 13.88. 1 (untitled) 13.8.18. 2 Ampacity of

Cords13.8.2

8. 3 (untitled) 13.8.313 Wiring practices 1413. 1 Connections and

routing14.1


14.1.1

13. 1. 2 Conductor and cable runs

14.1.2

13. 1. 3 Conductors of different circuits

14.1.3

13. 1. 3. 1 Conductors supplied from Separate disconnects

14.1.3.1

13. 1. 4 Connection between pick-up and pick-up converter of an inductive power supply system

14.1.4

13. 5 Cables 14.1.513. 6 Cords 14.1.613. 2 Identification of

conductors14.2


14.2.1

13. 2. 2 Identification of the Equipment Grounding (protective) conductor

14.2.2

13. 2. 3 Identification of the Grounded Circuit conductor

14.2.3

13. 2. 4 Identification by color of Other Conductors.

14.2.4

13. 3 Wiring inside enclosures

14.3

13. 4 Wiring outside enclosures

14.4


14.4.1

13. 4. 2 External Raceways (ducts)

14.4.2

13. 4. 3 Connection to moving elements of the machine

14.4.3

13. 4. 3. 1 (new) General 14.4.3.113. 4. 3. (Note: 14.4.3.6

Cable Handling Systems is moved to this new sub subsection and the associated paragraphs and table)

2 Cable Handling System(Note: Paragraph 14.4.3.8 in ROP draft is not part of Cable Handling systems and moves to becomes paragraph 14.4.2.1.6 in the (new) General sub subsection above)

14.4.3.2

13. 4. 4 Interconnection of devices on the machine

14.4.4

13. 4. 5 Plug/socket combinations

14.4.5

79-16



13. 4. 6 Dismantling for shipment

14.4.6

13. 5 Raceways (Ducts), Support Systems (Cable Supports), connection boxes and other boxes

14.5


14.5.1

13. 5. 2 Percentage fill of ducts

14.5.2

13. 5. 3 Rigid conduit and fittings

14.5.3

13. 5. 3. 1 General Requirements

14.5.3.1

13. 5. 3. 2. Metal-type Nonflexible Conduct

1 14.5.3.2

13. 5. 3. 2. 1 General Requirements

14.5.3.2.1

13. 5. 3. 2. 2 Rigid Metal Conduit (RMC)

14.5.3.2.2

13. 5. 3. 2. 3 Intermediate Metal Conduit (IMC)

14.5.3.2.3

13. 5. 3. 2. 4 Electrical Metallic Tubing (EMT)

14.5.3.2.4

13. 5. 3. 3 Rigid Nonmetallic Conduct (PVC Schedule 80)

14.5.3.3

13. 5. 4 Flexible metal conduit and fittings

14.5.4

13. 5 4. 1 General Requirements

14.5.4.1

13. 5. 4. 2 Flexible Metal Conduit (FMC)

14.5.4.2

13. 5. 4. 3 Liquidtight Flexible Metal Conduit (LFMC)

14.5.4.3

13. 5. 5 Flexible non-metallic conduit and fittings

14.5.5

13. 5. 5. 1 Definition (suggest removing sub subsection title and only number as paragraph that has a list)

14.5.5.1

13. 5. 5. 2 (untitled) 14.5.5.213. 5. 5. 3 (untitled) 14.5.5.313. 5 5. 4 (untitled) 14.5.5.413. 5. 5. 5 (untitled) 14.5.5.513. 5. 5. 6 (untitled) 14.5.5.613. 5. 5. 7 (untitled) 14.5.5.713. 5. 6 Wireways

(Cable trunking systems)

14.6

13. 5. 7 Machine compartments and Wireways

14.7

13. 5. 8 Connection boxes and other boxes

14.8

13. 5. 9 Motor connection boxes

14.9

13. 5. 10 Cable Trays 14.1014 Electric motors

and associated equipment

15

14. 1 General requirements 15.114. 2 reserved 15.214. 3 Motor dimensions 15.314. 4 Motor mounting and

compartments15.4

14. 5 Criteria for motor selection

15.5

79-17



14. 6 Protective devices for mechanical brakes

15.6

14. 7 Direction Arrow 15.714. 8 Marking on Motors 15.815 Accessories and

lighting16

15. 1 Accessories 16.115. 1. 1 Receptacles

for Accessory Equipment

16.1.1

15. 1. 2 Receptacles for Maintenance Personnel

16.1.2

15. 2 Local lighting of the machine and equipment

16.2

15. 2. 1 General 16.2.115. 2. 2 Supply 16.2.215. 2. 3 Protection 16.2.315. 2. 4 Lighting

Fixtures16.2.4

16 Marking, warn-ing signs and reference desig-nations

17

16. 1 General 17.116. 2 Safety Signs for

Electrical Enclosures17.2

16. 3 Functional identifica-tion

17.3

16. 4 Machine Nameplate Data

17.4

16. 5 Equipment Marking and Identification

17.5

17 Technical docu-mentation

18

17. 1 General 18.117. 2 Information to be

provided18.2

17. 3 Requirements appli-cable to all documen-tation

18.3

17. 4 Basic Information 18.45 Installation Diagrams 18.5

17. 6 Block (System) Diagrams and Function Diagrams

18.6

7 Circuit diagrams 18.717. 8 Operating manual 18.817. 9 Maintenance manual 18.917. 10 Parts list 18.1018 Testing and

Verification19

18. 1 General 19.118. 2 Continuity fo the

Equipment Grounding (Protective Bonding) Circuit

19.2

18. 3 Insulation resistance tests

19.3

18. 4 Voltage tests 19.418. 5 Protection against

residual voltages19.5

18. 6 Functional tests 19.618. 7 Retesting 19.7Xx Servo Drives

and MotorsXx

xx. 1 Drive Supply Conductors

xx.1

xx. 2 Overload Protection xx.2xx. 2. 1 (untitled) xx.2.1xx. 2. 1. 1 Motor Amplifier

/ Drivexx.2.1.1

xx. 2. 1. 2 Multiple motor applications

xx.2.1.2

79-18

Report on Comments F2005 — Copyright, NFPA NFPA 79 Chapter Section Subsection Sub-subsection Sub subsection ROP

Numberingxx. 3 Motor Over

Temperature Protection

xx.3

xx. 3. 1 General xx.3.1xx. 3. 1. 1 (untitled) xx.3.1.1xx. 3. 1. 1. 1 Integral motor

Thermal protec-tion

xx.3.1.1.1

xx. 3. 1. 1. 2 (untitled) xx.3.1.1.2xx. 3. 1. 1. 3 (untitled) xx.3.1.1.3xx. 3. 2 (untitled) xx.3.1.2xx. 3. 3 Multiple Motor

Applicationsxx.3.1.3

xx 4 Motor Circuit Conductors

xx.4.2

A Explanatory Material

A

B Enquiry form for the electrical equipment of machines

B

C (informative) Examples of machines cov-ered by NFPA 790

C

C. 1 Machine Tools C.1C. 2 Plastics Machinery C.2C. 3 Wood Machinery C.3C. 4 Assembly Machines C.4C. 5 Material-Handling

MachinesC.5

C. 6 Inspection / Testing Machines

C.6

D Technical Documentation

D

E Device and Component Designations

E

E. 1 Device and Component Designations

E.1

F Enclosure Ratings: Type-Rating Verses IP-Rating

F

F. 1 Disclaimer F.1F. 2 Rating fo Electrical

EnclosuresF.2

F. 3 Type-Rating System F.3F. 4 IP-Rating System F.4F. 5 (untitled) F.5G Kilowatt

Outputs with Horsepower Equivalents

G

G. 1 Preferred Kilowatt Outputs with Horsepower Equivalents

G.1

H. Minimizing the Probability of control Function Failure

I

H. 1 (untitled) I.1H. 1 (untitled) I.1.1H. 2 General I.1.2H. 2 Measures to Minimize

Risk in the event of Failure

I.2

H. 3 Provisions for Redundancy

I.3

H. 4 Use of Diversity I.4H. 5 Functional Tests I.5I 1 Reference

PublicationsJ

I. 1 NFPA Publications

J.1

I. 2 ANSI Publications

J.1.1

I. 3 IEC Publications J.1.2I. 4 IEEE

PublicationsJ.1.3

I. 5 ISO Publications J.1.4I. 6 NEMA

PublicationsJ.1.5

I. 7 UL Publications J.1.6I. 2 Informal References

(reserved)J.2

I. 3 Reference for Extracts J.3

79-19


Figure Title

1 – Block diagram of a typical machine2 – Example of equipotential bonding for electrical equipment of a machine3 – Method a)4 – Method b)A.1 – Typical arrangement for fault loop impedance measurementD.1 – Methods of conductor and cable installation independent of number of conductors/cablesD.2 – Parameters of conductors and protective devices

Table Title

1 – Minimum cross-sectional area of the external protective copper conductor2 – Colour-coding for push-button actuators and their meanings3 – Symbols for push-buttons4 – Colours for indicator lights and their meanings with respect to the condition of the machine5 – Minimum cross-sectional areas of copper conductors6 – Examples of current-carrying capacity (Iz) of PVC insulated copper conductors or cables under steady-state conditions in an ambient air tem-

perature of +40 °C for different methods of installation7 – Derating factors for cables wound on drums8 – Minimum permitted bending radii for the forced guiding of flexible cables9 – Application of the test methods for TN-systems10 – Examples of maximum cable length from each protective device to its loadA.1 – Maximum disconnecting times for TN systemsD.1 – Correction factorsD.2 – Derating factors from Iz for groupingD.3 – Derating factors from Iz for multicore cables up to 10 mm2D.4 – Classification of conductorsD.5 – Maximum allowable conductor temperatures under normal and short-circuit conditionsF.1 – Application optionsG.1 – Comparison of conductor sizes

____________________________________________________________79-3 Log #95 Final Action: Accept in Principle(Entire Document) ________________________________________________________________Submitter: William Anderson, The Procter & Gamble CompanyComment on Proposal No: 79-3Recommendation: Reconsider the original comment to correct unenforceable and vague terms in the main text as indicated in the following table:(See Table on the following pages.Substantiation: Requirements that can be easily misinterpreted or hard to enforce without defined parameter that are not clearly present with respect to the stated vagueness of the requirement because of the terms in question. Change required per Manual of Style 2004 edition subsection 2.2.2 Unenforceable Terms.Committee Meeting Action: Accept in Principle The following portions of this comment are Accept: 6.2.1, 13.7.1.2, 7.3.3.2, 6.2.2.1 Exception, 6.4.2(4), 9.2.4(2), 15.3, 12.4.12, 10.1.2.2, 10.2.3.1, 5.3.3.1(6)(b), 13.4.1, 7.2.10.3, 12.5.2.2, 4.4.4, 6.4.1 Ex. No. 2 (6.5.2), 12.4.13(2), 6.2.3.1 Ex. No. 2 (6.2.3), 9.3.4.3. The following portions of this comment are rejected for reason (a): 5.3.3.1(6)(a), 6.1, 6.2, 6.2.1, 7.2.1.(4)(a), 7.2.10.3, 9.2.3.1, 10.1.2.2(1), 10.1.6.1.2, 10.1.6.1.3 10.2.3.1, Table 10.3, 10.9, 12.2.1.8, 12.4.1, 12.4.2, 12.4.13, 12.6.1, 13.7.3, 14.1.4.2(1), 17.4.2, 18.2(8), 5.4.4 (1), 6.2.3.2, 10.3.1, 6.3.1.1 (1) (a), The following portions of this comment are rejected for reason (b): 12.4.9, 14.5.1.4, 14.5.3.2.1.1, 14.5.3.2.1.2, 14.5.3.3.2.All of the remaining portions of this comments not specifically listed here are rejected for reason (c).Committee Statement: According to reason (a), those portions of this comment were rejected because the proposed notes do not significantly add to the understanding of the requirement. According to reason (b), Other portions of this comment were rejected because there was no substantiation for removal of the word securely and the changes would be in conflict with the NEC. And, according to reason (c), and after being reviewed in context in accordance with Section 2.2.2.3 of the 2004 NFPA Manual of Style the remainder of the recommendations were rejected because the existing requirements are enforceable and are not vague.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDEComment on Affirmative: SANDERS: On page 16 of the include file titled “NFPA 79 (Log #95) Rec/F2005 ROC”, in the 4th row from the bottom, 4th column, recommend the following correction to the title of NFPA 70E. “A.6.3.2. See NFPA 70E, Electrical Safety Requirements for Employee Workplaces, for additional information on work practices.” Comment for the correction: At present, the TC action is to state the title of NFPA 70E as including the words “Standard for” which is not the way it is listed in NFPA catalogs or on the NFPA Catalog website. Those wanting to order this document under the title “Standard for Electrical Safety in the Workplace” would not be able to easily find NFPA 70E.

79-20


Section # Current text Change to Proposed change shown in context:Acceptable15.4.3 is at an accept-

able levelis excluded 15.4.3 Motor compartments shall be clean and

dry, and, when required, shall be ventilated directly to the exterior of the machine. The vents shall be so that ingress of swarf, dust, or water spray is at an acceptable level excluded.

Adequate6.2.1 shall not be

considered adequate pro-tection

shall not be considered pro-tection

6.2.1 Protection by Insulation of Live Parts. Live parts protected by insulation shall be com-pletely covered with insulation that can only be removed by destruction. Such insulation shall be capable of withstanding the mechanical, chemi-cal, electrical, and thermal stresses to which it can be subjected under normal operating condi-tions. Paints, varnishes, lacquers, and similar products shall not be considered adequate protec-tion against electric shock under normal operat-ing conditions.

12.3.1* shall be adequate taking into account

shall entail 12.3.1* The protection of control equipment against ingress of solid foreign objects and of liq-uids shall be adequate taking into account entail the external influences under which the machine is intended to operate (i.e., the location and the physical environmental conditions including dust, coolants, and swarf).

13.4.4 and adequate for the volt-age on

and rated for the nominal voltage or higher that is placed on

13.4.4 Wire insulation shall be identified and adequate rated for the nominal voltage or higher that is placed on that conductor.<<Note consider moving the entire phrase after the “and” to after “insulated” in 13.1.2 to improve clarity and organization of the require-ments>>

13.7.1.2* shall be of adequate con-struction

shall be con-structed

13.7.1.2* Cables that are subjected to severe duties shall be of adequate construction ed to protect against the following:

Adequately4.4.6* shall be

adequately pro-tected

shall be pro-tected

4.4.6* Contaminants. Electrical equipment shall be adequately protected against the ingress of solid bodies and liquids (see Section 12.3). Equipment shall be suitable for the environment where contaminants (e.g., dust, acids, corrosive gases, salt) are present.

79-21


7.3.3.2 adequately pro-tected

protected 7.3.3.2 Short-time–rated motors or high-revers-ing duty motors that cannot be adequately pro-tected by external overload devices shall be pro-tected by a thermal device mounted in the motor and sensitive to the temperature of the motor, or to both motor temperature and current.

7.6.1* the speed ade-quately, drive

the speed, drive 7.6.1* Motor Overspeed Protection. Unless the inherent characteristics of the motor or the controller, or both, are such as to limit the speed adequately, drive systems motors shall include protection against motor overspeed where over-speed results in a hazardous condition.

12.2.1.9 drawings, adequately insulated

drawings, insu-lated

12.2.1.9 Test points, where provided, shall be mounted to provide unobstructed access, plainly marked to correspond with markings on the drawings, adequately insulated, and sufficiently spaced for connection of test leads.

14.1.5.6 Exception

is adequately supported

is supported 14.1.5.6 Connections to frequently moving parts shall be made with conductors for flexing service in accordance with Section 13.7. Cord with conductors for flexing service shall have vertical connections and shall be installed to avoid exces-sive flexing and straining.Exception: Horizontal connections shall be per-mitted where the cord is adequately supported.

14.4.3.1 conduit is adequately sup-ported

conduit is sup-ported

14.4.3.1 Connections to moving parts shall be made using conductors in accordance with Section 13.7. Flexible cable and conduit shall have vertical connections and shall be installed to avoid excessive flexing and straining. Horizontal connections shall be permitted where the flexible cable or conduit is adequately supported. Cable with flexible properties and flexible conduit shall be so installed as to prevent excessive flexing and straining, particularly at the fittings.

15.4.1 are adequately protected

are protected 15.4.1 Each motor and its associated couplings, belts and pulleys, or chains and sprockets shall be mounted so that they are adequately protected from physical damage and are easily accessible for inspection, maintenance, adjustment and alignment, lubrication, and replacement. The motor mounting arrangement shall be so that all motor hold-down means can be removed and all terminal boxes are accessible. An adjustable base or other means of adjustment shall be provided when belt or chain drives are used.

Appreciable6.2.2.1Exception

without appre-ciable force

with only mini-mal force

6.2.2.1 Direct Contact from Outside an Enclosure. Exception: In the absence of a rated enclosure, the determination of the suitability of an enclo-sure as protection from electrical shock shall be determined by using a test finger as described in Figure 6.2.2.1. The test finger shall be applied, without only minimal appreciable force, in every opening in the enclosure after removal of all parts of the enclosure that can be removed with-out the use of a tool.

Appropriate5.4.1 (1) Appropriate for

the intended useFit for the intended use

5.4.1 Means for removal of power shall be pro-vided when prevention of unexpected start-up is required (e.g., during maintenance where the unexpected start-up of a machine can create a hazard). Such means shall include all of the fol-lowing:(1) Appropriate Fit for the intended use

79-22


6.3.2 (4)ROP draft 6.4.2 (4)

conforming to appropriate standards

conforming to standards

6.4.2 Sources for PELV. The source for PELV shall be one of the following:(4) An identified electronic power supply con-forming to appropriate standards specifying measures to be taken to ensure that, even in the case of an internal fault, the voltage at the outgo-ing terminals cannot exceed the values specified in 6.3.1.1(1)

7.4* initiate an appropriate control

initiate a con-trol

7.4* Abnormal Temperature Protection. Resistance heating or other circuits that are capa-ble of attaining or causing abnormal temperatures and, therefore, can cause a hazardous condition shall be provided with suitable detection to initi-ate an appropriate control response.

7.5.1 initiate appro-priate control

initiate a con-trol

7.5.1 General. Where a supply interruption or a voltage reduction can cause a hazardous condi-tion or damage to the machine or to the work in progress, undervoltage protection shall be pro-vided (e.g., to switch off the machine) at a pre-determined voltage level. Where only a part of the machine or of the group of machines working together in a coordinated manner is affected by the voltage reduction or supply interruption, the undervoltage protection shall initiate appropriate control responses to ensure coordination.

9.2.4 (2) , and where appropriate, an enabling

, and where used, an enabling

9.2.4 Overriding Safeguards. Where it is necessary to temporarily override one or more safeguards, a mode selection device or means capable of being secured (e.g., locked) in the desired mode shall be provided to prevent automatic operation. The control circuit for the suspension of a safeguard shall have the same safety requirements as the suspended safeguard itself. In addition, one or more of the following measures shall be provided: (2) A portable control station (e.g., pendant) with an emergency stop device, and where appro-priate used, an enabling device. Where a portable station is used, motion shall only be initiated from that station.

9.3.3.1 Appropriate devices (e.g., pressure sen-sors) shall check

Devices (e.g., pressure sen-sors) shall be used to check

9.3.3.1 Appropriate d Devices (e.g., pressure sen-sors) shall be used to check the correct operation of the auxiliary functions.

11.2.3(ROP Draft) 4.4.2.1

Other appropri-ate means

other effective means

11.2.3 Electrical Noise and Transient Suppression. Transient suppression, isolation, or other appropriate effective means shall be pro-vided where the electronic equipment generates electrical noise or transients, which can affect the operation of equipment.

15.3* or IEC 60072-2, as appropri-ate.

or IEC 60072-2.

15.3* Motor Dimensions. As far as is practi-cable, the dimensions of the motors shall comply with those given in NEMA MG-1, IEC 60072-1, or IEC 60072-2, as appropriate.

18.1.1 instructions as appropriate.

instructions. 18.1.1 The information necessary for installa-tion, operation, and maintenance of the electrical equipment of a machine shall be supplied in the form of drawings, diagrams, charts, tables, and instructions as appropriate. The informa-tion provided shall be permitted to vary with the complexity of the electrical equipment. For very simple equipment, the relevant information shall be permitted to be contained in one document provided this document shows all the devices of the electrical equipment and enables the connec-tions to the supply network to be made.

79-23


18.2 (3), (5) and (12)

where appro-priate

(delete three times)

18.2 Information to Be Provided. The follow-ing information shall be provided with the elec-trical equipment:(3) Overview (block) diagram(s) where appropri-ate(5) Information (where appropriate) on the fol-lowing:(12) Reference information (where appropriate) on the following:

18.3.3 Where appro-priate, a table

A table 18.3.3 Where appropriate, a A table of contents shall appear prominently on the first sheet and shall refer to all major sections of the electrical drawings.

18.4 (1) supply and, where appropri-ate, the

supply and, the 18.4* Basic Information. The technical docu-mentation shall contain, as a minimum, informa-tion on the following:(1) Normal operating conditions of the electrical equipment including the expected conditions of the electrical supply and, where appropriate, the physical environment

18.5.7 Where it is appropriate, an interconnection

An intercon-nection

18.5.7* Where it is appropriate, an An intercon-nection diagram or table shall be provided. That diagram or table shall give full information about all external connections. Where the electrical equipment is intended to be operated from more than one source of electrical supply, the intercon-nection diagram or table shall indicate the modi-fications or interconnections required for the use of each supply.

18.7.3 Where appro-priate, a dia-gram

A diagram 18.7.3* Where appropriate, a A diagram show-ing the terminals for interface connections shall be provided. Switch symbols shall be shown on the electromechanical diagrams with all supplies turned off (e.g., electricity, air, water, lubricant) and with the machine and its electrical equipment in the normal starting condition and at 20°C (68°F) ambient temperature. Control settings shall be shown on the diagram.

18.10.2 (4) characteristics where appro-priate

characteristics 18.10.2 The parts list shall show the following for each item:(4) Its general characteristics where appropriate

Available14.2.4.1* Exception No. 2and 14.2.4.3 Exception No.2

used is not available in

used is not feasible to be obtained in

Exception No. 2: Where the insulation used is not available feasible to be obtained in the col-ors required (e.g., high temperature insulation, chemically resistant insulation).

Avoid14.1.5.6 installed to

avoid excessiveinstalled to pre-vent excessive

14.1.5.6 Connections to frequently moving parts shall be made with conductors for flexing ser-vice in accordance with Section 13.7. Cord with conductors for flexing service shall have vertical connections and shall be installed to avoid pre-vent excessive flexing and straining.

14.4.3.1 installed to avoid excessive

installed to pre-vent excessive

14.4.3.1 Connections to moving parts shall be made using conductors in accordance with Section 13.7. Flexible cable and conduit shall have vertical connections and shall be installed to avoid prevent excessive flexing and strain-ing. Horizontal connections shall be permitted where the flexible cable or conduit is adequately supported. Cable with flexible properties and flexible conduit shall be so installed as to prevent excessive flexing and straining, particularly at the fittings.

Care

79-24


12.4.12 purposes, care shall be taken so that after mounting, the holes do not

purposes, after mounting, the holes shall not

12.4.12 Where there are holes in an enclosure for mounting purposes, care shall be taken so that after mounting, the holes do shall not impair the required protection.

Considered4.4.1 user shall be

considered.user shall be achieved.

4.4.1* General. The electrical equipment shall be suitable for use in the physical environment and operating conditions specified in 4.4.3 to 4.4.6 and 4.4.8. When the physical environment or the operating conditions are outside those specified, an agreement between the supplier and the user shall be considered achieved.

5.3.4.1 shall be consid-ered as

shall be regard-ed as

5.3.4.1 The center of the grip of the operating handle of the disconnecting means, when in its highest position, shall be not more than 2.0 m (6 ft 7 in.) above the floor. A permanent operat-ing platform, readily accessible by means of a permanent stair or ladder, shall be considered regarded as the floor for the purpose of this requirement.

6.2.1 shall not be considered adequate

shall not be deemed ade-quate

6.2.1 Protection by Insulation of Live Parts. Live parts protected by insulation shall be com-pletely covered with insulation that can only be removed by destruction. Such insulation shall be capable of withstanding the mechani-cal, chemical, electrical, and thermal stresses to which it can be subjected under normal operat-ing conditions. Paints, varnishes, lacquers, and similar products shall not be considered deemed adequate protection against electric shock under normal operating conditions.

7.2.4.1 shall not be considered to be

shall not be deemed to be

7.2.4.1 General. A control circuit tapped from the load side of the branch-circuit short-circuit and ground-fault protective device(s) and func-tioning to control the load(s) connected to that branch circuit shall be protected against overcur-rent in accordance with 7.2.4.2. Such a tapped control circuit shall not be considered deemed to be a branch circuit and shall be permitted to be protected by either a supplementary or branch circuit overcurrent protective device(s).

7.2.4.2.2 shall be con-sidered as pro-tected

shall be deemed to be protected

7.2.4.2.2 Control circuit conductors sizes of 18, 16, and 14 AWG shall be considered as deemed to be protected by an overcurrent device(s) of not more than a 20-ampere rating.

7.2.4.2.3 shall be consid-ered protected


7.2.4.2.3 Control circuit conductors that do not extend beyond the control cabinet enclosure shall be considered deemed to be protected by the load branch-circuit short-circuit and ground-fault protective device(s) where the rating of the protective device(s) is not more than 400 percent of the ampacity of the control circuit conductor for conductors 14 AWG and larger, or not more than 25 amperes for 18 AWG and 40 amperes for 16 AWG.



7.2.4.2.4 Control circuit conductors of 14AWG and larger that extend beyond the enclosure shall be considered deemed to be protected by the load branch-circuit short-circuit and ground-fault pro-tective device(s) where the rating of the protec-tive device(s) is not more than 300 percent of the ampacity of the control circuit conductors.

79-25



[And]

not considered to be protected


[And]

not regarded as being protected

7.2.4.2.5 Control circuit conductors supplied by the secondary side of a single-phase transformer having a 2-wire (single-voltage) secondary shall be considered deemed to be protected by over-current protection provided on the primary (sup-ply) side of the transformer, if this protection is in accordance with 7.2.7 and does not exceed the value determined by multiplying the secondary conductor ampacity by the secondary-to-primary voltage ratio. Transformer secondary conduc-tors (other than 2-wire) are not considered to be regarded as being protected by the primary over-current protective device.



7.2.4.2.6 Control circuit conductors of control circuits shall be considered deemed to be protect-ed by the motor branch-circuit short-circuit and ground-fault protective device(s) where the open-ing of the control circuit would create a hazard (e.g., the control circuit of a magnetic chuck).

7.2.11.3 shall be consid-ered branch

shall be regard-ed as branch

7.2.11.3 The additional overcurrent protective devices shall include all of the following:(1) Installed within or on the machinery or pro-vided as a separate assembly(2) Accessible but need not be readily accessible(3) Suitable for branch-circuit protectionThe main conductors supplying these overcurrent protective devices shall be considered regarded as branch-circuit conductors.

8.2.3.4 shall not be considered as bonded

shall not be regarded as bonded

8.2.3.4 Moving machine parts, other than acces-sories or attachments, having metal-to-metal bearing surfaces shall be considered as bonded. Sliding parts separated by a nonconductive fluid under pressure shall not be considered regarded as bonded.

9.2.5.5.2 shall be consid-ered a jog

shall be regard-ed as a jog

9.2.5.5.2 Jog or inch functions shall operate only in the manual mode. Manual reverse shall be considered regarded as a jog function. The prevention of run or automatic operation during jog or inch shall be accomplished by an opera-tor interface and a separate jog or inch selection method.

12.2.2.1 shall not be considered enclosed

shall not be regarded as enclosed

12.2.2.1 Machine compartments containing control equipment shall be completely isolated from coolant and oil reservoirs. The compart-ment shall be readily accessible and completely enclosed. The compartment shall not be consid-ered regarded as enclosed where it is open to the floor, the foundation upon which the machine rests, or other compartments of the machine that are not clean and dry.

Table 12.5.1.1 Note

shall not be considered live

[And]

shall be consid-ered as

shall not be deemed live

[And]

shall be regard-ed as

Condition 1—Exposed live parts on one side and no live or grounded parts on the other side of the working space, or exposed live parts on both sides effectively guarded by insulating materials. Insulated wire or insulated busbars operating at not over 300 volts to ground shall not be consid-ered deemed live parts.Condition 2—Exposed live parts on one side and a grounded surface on the other side. Concrete, brick, or tile walls shall be considered regarded as grounded.

14.1.2.2 shall not be considered as splices

shall not be regarded as splices

14.1.2.2 Factory-applied connectors molded onto cables shall be permitted. Such connectors shall not be considered regarded as splices or joints.

79-26


7.2.1.2 with proper consideration being given to, but

with specifica-tions supported by, but

7.2.1.2 All protective devices shall be selected and applied with proper consideration being given to specifications supported by, but not lim-ited to, the following:

Could10.1.7 actuation could

createactuation create 10.1.7 Foot-Operated Switches. Foot-operated

switches used for applications where accidental actuation could create a hazardous situation shall be protected to prevent accidental actuation by falling or moving objects and from unintended operation by accidental stepping onto the switch.

Easy10.1.2.2 are within easy

reach of the normal

are accessible from the normal

10.1.2.2 Hand-Operated Control Devices. The actuators of hand-operated control devices shall be selected and installed as follows:(1) They are not less than 0.6 m (2 ft) above the servicing level and are within easy reach of accessible from the normal working position of the operator.(2) The operator is not placed in a hazardous situation when operating them.(3) The possibility of inadvertent operation is minimized.

14.1.1.9 permit easy dis-connection

permit discon-nection

14.1.1.9 Shielded conductors shall be terminated so as to prevent fraying of strands and to permit easy disconnection.

Easily6.4.1(ROP Draft) 6.5.2

displayed at an easily visible

displayed at a visible

6.5.2 Live parts having a residual voltage greater than 60 volts after the supply has been discon-nected shall be reduced to 60 volts or less within 5 seconds after disconnection of the supply volt-age.Exception No. 1: Exempted from this requirement are components having a stored charge of 60 microcoulombs or less.Exception No. 2: Where such a provision would interfere with the proper functioning of the equipment, a durable warning notice drawing attention to the hazard and stating the delay required before entry to the enclosure is allowed shall be displayed at an easily visible location on or immediately adjacent to the enclosure con-taining the capacitance.

10.2.3.1 it (can be) eas-ily read (is) by

(items changed in another relat-ed proposal)

it (can be) (is) readable by


10.2.3.1 A legend shall be provided for each operator interface device to identify its function and shall be located so that it (can be) easily read (is) readable by the machine operator from the normal operator position. The legends shall be durable and suitable for the operating environ-ment.

12.4.10 shall be easily reopened

shall be fitted to be reopened

12.4.10 All openings in the enclosure, includ-ing those toward the floor or foundation or to other parts of the machine, shall be closed by the supplier(s) in a manner ensuring the protection specified for the equipment. Openings for cable entries shall be easily fitted to be reopened on site. A suitable opening shall be permitted in the base of enclosures within the machine so that moisture due to condensation is allowed to drain.

79-27


15.4.1 are easily accessible

are accessible 15.4.1 Each motor and its associated couplings, belts and pulleys, or chains and sprockets shall be mounted so that they are adequately protected from physical damage and are easily accessible for inspection, maintenance, adjustment and alignment, lubrication, and replacement. The motor mounting arrangement shall be so that all motor hold-down means can be removed and all terminal boxes are accessible. An adjustable base or other means of adjustment shall be provided when belt or chain drives are used.

17.5.1 is not easily read

is not readable 17.5.1 Where equipment is removed from its original enclosure or is placed so that the manufacturer’s identification plate is not easily readable, an additional identification plate shall be attached to the machine or enclosure.

17.5.2 it (can be is) easily read.


it (can be) (is) read.


17.5.2 Where a motor nameplate or connection diagram plate is not visible, additional identifica-tion shall be provided where it (can be is) easily read.

Effectively8.2.1.1 be effectively

grounded (2 times)

be grounded(2 times)

8.2.1.1 Equipment Grounding. The machine and all exposed, non-current-carrying conduc-tive parts, material, and equipment likely to be energized shall be effectively grounded. Where electrical devices are mounted on metal mount-ing panels that are located within nonmetallic enclosures, the metal mounting panels shall be effectively grounded.

8.2.3.3 are effectively penetrated

are penetrated 8.2.3.3 Bonding of equipment with bolts or other identified means shall be permitted where paint and dirt are removed from the joint surfaces or where the bonded members are effectively pen-etrated.

11.2.1.2(ROP Draft) 8.2.1.1

be effectively bonded

be bonded 8.2.1.1 Equipment Grounding. The machine and all exposed, non-current-carrying conduc-tive parts, material, and equipment likely to be energized shall be effectively grounded. Where electrical devices are mounted on metal mount-ing panels that are located within nonmetallic enclosures, the metal mounting panels shall be effectively grounded. Where specified by the manufacturer, components and subassemblies shall be effectively bonded to the equipment grounding (protective bonding) circuit in accor-dance with the manufacturer’s recommendations.

Table 12.5.1.1 Note

sides effectively guarded

sides guarded Condition 1—Exposed live parts on one side and no live or grounded parts on the other side of the working space, or exposed live parts on both sides effectively guarded by insulating materials. Insulated wire or insulated busbars operating at not over 300 volts to ground shall not be consid-ered live parts.

14.5.3.1.4 be effectively reduced

be reduced 14.5.3.1.4 Conduit bends shall be made in such a manner that the conduit shall not be damaged and the internal diameter of the conduit shall not be effectively reduced. The radius of the curve of any field bend to the center line of the conduit shall be not less than shown in Table 14.5.3.1.4.

Equivalent

79-28


5.3.3.1 (6) (b)

rotor equivalent equal

rotor current equal

(b) Where rated in horsepower, the horsepower rating shall be at least equal that which is defined by Table 430.151(B) of NFPA 70, National Electrical Code, for a locked rotor current equivalent equal to the largest sum resulting from the locked rotor currents of any combination of motors that can be started simultaneously and the full-load currents of the remaining motor and non-motor loads that can be operated at that time.

6.3.2 (2)(ROP Draft) 6.4.2 (2)

safety equiva-lent to

providing equivalent iso-lation

safety corre-sponding to

providing isola-tion

(2) A source of current providing a degree of safety equivalent corresponding to that of the safety isolating transformer (e.g., a motor genera-tor with winding providing equivalent isolation)

8.2.2.3.1 electrically equivalent to

electrically equal to

8.2.2.3.1 Machine members or structural parts of the electrical equipment shall be permitted to be used in the equipment grounding circuit provided that the cross-sectional area of these parts is at least electrically equal equivalent to the minimum cross-sectional area of the copper conductor required.

9.4.3 (2)(ROP Draft)deleted

protection equivalent to

protection cor-responding to

(2) Provide protection equivalent corresponding to that of control systems incorporating hard-wired/hardware components

14.1.2.1 Exception No. 1

insulation equivalent to

insulation cor-responding to

Exception No. 1: Splices shall be permitted to leads attached to electrical equipment, such as motors and solenoids. Such splices shall be insulated with oil-resistant electrical tape or insulation equivalent corresponding to that of the conductors and installed in a suitable enclosure.

Frequently14.1.5.6 to frequently

moving parts shall be made with conductors for flexing

to moving parts shall be made with conductors for the intended flexing

14.1.5.6 Connections to frequently moving parts shall be made with conductors for the intended flexing service in accordance with Section 13.7. Cord with conductors for flexing service shall have vertical connections and shall be installed to avoid prevent excessive flexing and straining.

Good14.1.1.1 ensure a thor-

oughly good connection

ensure a thor-ough and sound connection

14.1.1.1 All connections shall be secured against accidental loosening and shall ensure a thor-oughly good and sound connection. Thread locking sealants, epoxies, glues, or other similar compounds shall not be used.

Likely8.2.1 are not likely to are implausible

toException: Small parts such as screws, rivets, and nameplates that are not likely implausible to become energized shall not be required to be grounded.

8.2.1.1 equipment likely to be energized shall

equipment shall 8.2.1.1 Equipment Grounding. The machine and all exposed, non-current-carrying conduc-tive parts, material, and equipment likely to be energized shall be effectively grounded. Where electrical devices are mounted on metal mount-ing panels that are located within nonmetallic enclosures, the metal mounting panels shall be effectively grounded.

12.4.1 are likely to be encountered

are encountered 12.4.1 Enclosures shall be constructed and fin-ished using materials capable of withstanding the mechanical, electrical, and thermal stresses, as well as the effects of humidity and corrosion that are likely to be encountered in normal service.

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12.5 and likely to require

and will require 12.5 Spaces Around Control Cabinets and Compartments. Access and working space for control cabinets and compartments operating at 600 volts, nominal, or less to ground and likely to will require examination, adjustment, servic-ing, or maintenance while energized shall com-ply with the provisions of Chapter 12. Sufficient access and working space shall be provided and maintained around all control cabinets and compartments to permit ready and safe operation and maintenance of such control cabinets and compartments.

14.1.4.3 that are likely to be removed

that will be removed

14.1.4.3 Cables shall not be supported by machinery guards that are likely to will be removed for maintenance access.

14.4.5.4 circuit is likely to be opened

circuit will be opened

14.4.5.4 Attachment plug and receptacle (plug/socket) combinations used for carrying motor loads shall meet the conditions of 5.3.3.3 if the circuit is likely to will be opened under load.

Legible13.4.1 if clearly leg-

ible throughif it can be read through

13.4.1 A durable legend printed on the outer surface of the insulation of construction A, on the outer surface of the nylon jacket of construction B, on the outer surface of the insulation under the jacket of construction B (only if clearly legible it can be read through the nylon), or on the outer surface of the jacket of a multiconductor cable shall be repeated at intervals of no more than 610 mm (24 in.) throughout the length of the single conductor or the multiconductor cable.

May5.3.3.1 (6) (a)

that may be in that is in (a) The ampere rating shall be at least 115 per-cent of the sum of the full-load currents required for all equipment that may be is in operation at the same time under normal conditions of use.

Most7.2.10.3 under the most

severeunder severe 7.2.10.3 Where the branch-circuit short-circuit

and ground-fault protective device is selected not to exceed that allowed by 7.2.10.1 for the smallest rated motor, two or more motors or one or more motors and other load(s), with each motor having individual overload protec-tion, shall be permitted to be connected to a branch circuit where it can be determined that the branch-circuit short-circuit and ground-fault protective device will not open under the most severe normal conditions of service that might be encountered.

Normal5.3.3.1 (6) (a)

normal condi-tions of use

normal condi-tions of use

[No change in text but add note ]

(a)* The ampere rating shall be at least 115 per-cent of the sum of the full-load currents required for all equipment that may be in operation at the same time under normal conditions of use.

A.5.3.3.1 (6) (a) The normal conditions of use is established by the manufacturer of the device. The normal conditions of use for the device applied to the industrial machine is established by the manufacturer of the industrial machine and documented per the requirements in 18.4 “Basic Information”.

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6.1 normal opera-tion

normal opera-tion[No change in text but add note]

6.1* General. Electrical equipment shall provide protection of persons from electric shock from direct and indirect contac.

A.6.1 The normal operation of the electrical equipment applied to the industrial machine is established by the manufacturer of the electrical equipment and its application to the industrial machine is documented per the requirements in 18.8 “Operating Manual”.

6.2 normal opera-tion

normal opera-tion[No change in text but add note]

6.2* Protection Against Direct Contact. Live parts operating at 50 volts rms ac or 60 volts dc or more shall be guarded against accidental contact.

A.6.2 The normal operation of the electrical equipment applied to the industrial machine is established by the manufacturer of the electrical equipment and its application to the industrial machine is documented per the requirements in 18.8 “Operating Manual”.

6.2.1 normal operat-ing conditions

normal operat-ing conditions[No change in text but add note]

6.2.1* Protection by Insulation of Live Parts. Live parts protected by insulation shall be com-pletely covered with insulation that can only be removed by destruction. Such insulation shall be capable of withstanding the mechanical, chemi-cal, electrical, and thermal stresses to which it can be subjected under normal operating condi-tions. Paints, varnishes, lacquers, and similar products shall not be considered adequate protec-tion against electric shock under normal operat-ing conditions.

A.6.2.1 The normal operating conditions for the electrical equipment applied to the industrial machine is established by the manufacturer of the industrial machine and documented per the requirements in 18.4 “Basic Information”.

7.2.1.2 (4) (a)

Normal operat-ing current

Normal operat-ing current[No change in text but add note]

(a)* Normal operating current

A.7.2.1.2 (4) (a) The normal operating current is established by the manufacturer of the protec-tive device. The normal conditions of use for the protective device applied to the industrial machine is established by the manufacturer of the industrial machine and documented per the requirements in 18.4 “Basic Information”.

7.2.10.3 normal condi-tions of service

normal condi-tions of service[No change in text but add note]

7.2.10.3* Where the branch-circuit short-circuit and ground-fault protective device is selected not to exceed that allowed by 7.2.10.1 for the smallest rated motor, two or more motors or one or more motors and other load(s), with each motor having individual overload protec-tion, shall be permitted to be connected to a branch circuit where it can be determined that the branch-circuit short-circuit and ground-fault protective device will not open under the most severe normal conditions of service that might be encountered.

A.7.2.10.3 The normal conditions of service is established by the manufacturer of the protec-tive device. The normal conditions of use for the protective device applied to the industrial machine is established by the manufacturer of the industrial machine and documented per the requirements in 18.4 “Basic Information”.

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9.2.3.1 operating modes (e.g., automatic, man-ual, normal, and bypass)

operating modes (e.g., automatic, man-ual, normal, and bypass) [No change in text but add note]

9.2.3.1* Each machine shall be permitted to have one or more operating modes (e.g., automatic, manual, normal, and bypass) determined by the type of machine and its application.

A.9.2.3.1 The normal operating mode(s) of the industrial machine is established by the manu-facturer of the industrial machine and is docu-mented per the requirements in 18.8 “Operating Manual”.

10.1.2.2 (1) normal working position of the operator

normal working position of the operator[No change in text but add note]

(1)* They are not less than 0.6 m (2 ft) above the servicing level and are within easy reach of the normal working position of the operator.

A.10.1.2.2 (1) The intended normal working position of the operator(s) of the industrial machine is established by the manufacturer of the industrial machine and is documented per the requirements in 18.8 “Operating Manual”.

10.1.6.1.2 normal reach normal reach

[No change in text but add note]

10.1.6.1.2* Operator interface devices shall be within normal reach of the machine operator and shall be placed so that the operator is not exposed to hazards.

A.10.1.6.1.2 Normal reach provides the ability of the operator to manipulate the controls from the normal working position(s). <add ergonomic standard references>

10.1.6.1.3 normal move-ment of the machine

normal move-ment of the machine


10.1.6.1.3* Operator interface devices shall be located so that unintentional operation by normal movement of the machine, operator, or work will be unlikely.

A.10.1.6.1.3 The normal movement of the industrial machine is established by the machine design for the normal operating mode(s) and is established by the manufacturer of the industrial machine.

10.2.3.1 normal operator position

normal operator position


10.2.3.1* A legend shall be provided for each operator interface device to identify its function and shall be located so that it can be easily read by the machine operator from the normal opera-tor position. The legends shall be durable and suitable for the operating environment.

A.10.2.3.1 The intended normal operator position(s) of the industrial machine is estab-lished by the manufacturer of the industrial machine and is documented per the requirements in 18.8 “Operating Manual”.

10.7.3 Normal Function

Normal Function


10.7.3* Restoration of Normal Function After Emergency Stop. It shall not be pos-sible to restore an emergency stop circuit until the emergency stop device has been manually reset. Where several emergency stop devices are provided in a circuit, it shall not be possible to restore that circuit until all emergency stop devices that have been operated have been reset.

A.10.7.3 The normal function of the industrial machine is established by the manufacturer of the industrial machine and is documented per the requirements in 18.8 “Operating Manual”.

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Table 10.3 Normal - State of the EquipmentNormal - Condition of ProcessSafe – Safety of Persons or Environment

Normal - State of the EquipmentNormal - Condition of ProcessSafe – Safety of Persons or Environment [No change in text but add note]

Table 10.3* (matrix)Normal - State of the EquipmentNormal - Condition of ProcessSafe – Safety of Persons or Environment

A. Table .10.3 The normal state of the equipment and the normal condition of process of the indus-trial machine is established by the manufacturer of the industrial machine and is documented per the requirements in 18.8 “Operating Manual”.

10.8.3(ROP Draft) deleted

Normal Function

Normal Function


10.8.3* Restoration of Normal Function After Emergency Switching Off. It shall not be pos-sible to restore an emergency switching off cir-cuit until the emergency switching off circuit has been manually reset.

A.10.8.3 The normal function of the industrial machine is established by the manufacturer of the industrial machine and is documented per the requirements in 18.8 “Operating Manual”.

10.9 normal position of the operator

normal position of the operator

[No change in text but add to existing note]

10.9* Displays. Displays (e.g., visual display units, alarm annunciators, indicator lights, and the action-initiating icons of graphic interface devices) shall be selected and installed in such a manner as to be visible from the normal position of the operator.

(Add to A.10.9) The intended normal work-ing position of the operator(s) of the industrial machine is established by the manufacturer of the industrial machine and is documented per the requirements in 18.8 “Operating Manual”. <add ergonomic standard references>

12.2.1.8 normal opera-tion

normal opera-tion


12.2.1.8* Attachment plugs and receptacles (plug/socket combinations) that are handled dur-ing normal operation shall be located and mount-ed so as to provide unobstructed access.

A.12.2.1.8 The normal operation of the industrial machine is established by the manufacturer of the industrial machine and is documented per the requirements in 18.8 “Operating Manual”.

12.4.1 normal service normal service


12.4.1* Enclosures shall be constructed and fin-ished using materials capable of withstanding the mechanical, electrical, and thermal stresses, as well as the effects of humidity and corrosion that are likely to be encountered in normal service.

A.12.4.1 The normal service for the electrical equipment and enclosures that are applied to the industrial machine is established by the manu-facturer of the electrical equipment and there application to the industrial machine is docu-mented per the requirements in 18.8 “Operating Manual”.

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12.4.2 normal require-ments

normal require-ments


12.4.2 *Where corrosion protection beyond nor-mal requirements is needed, nonmetallic enclo-sures identified for the purposes shall be permit-ted if they meet the requirements ofUL508.

A.12.4.1 The normal level of contaminants acceptable for the electrical equipment applied to the industrial machine is established by the manufacturer of the electrical equipment and the application including the type and acceptable level of contaminants for the use of the indus-trial machine is per the requirements in 4.4.6 “Contaminants” and documented as the physical environment part of 18.8 “Operating Manual”.

12.4.13 Normal or abnormal operation

Normal or abnormal operation


12.4.13* Equipment that, in normal or abnormal operation, can attain a surface temperature suf-ficient to cause a risk of fire or harmful effect to an enclosure material shall be one of the fol-lowing:

A.12.4.13 The normal operation for the industrial machine is established by the industrial machine manufacturer and is documented per the require-ments in 18.8 “Operating Manual”.

12.6.1 normal machine movements

normal machine movements


12.6.1* Control equipment (e.g., limit switches, brakes, solenoids, position sensors) shall be mounted rigidly in a reasonably dry and clean location, unless designed for a specific environ-ment, shall be protected from physical damage, and shall be free from the possibility of acciden-tal operation by normal machine movements or by the operator.

A.12.6.1 The normal machine movement(s) of the industrial machine is established by the machine design for the normal operating mode(s) and is established by the manufacturer of the industrial machine.

13.7.3 normal service load

normal service load

[No change in text but add to existing note]

13.7.3* Current-Carrying Capacity of Cables Wound on Drums. Cables to be wound on drums (see Table 13.7.3) shall be selected with conductors of a cross-sectional area such that, when fully wound on and carrying the normal service load, the maximum allowable operating temperature is not exceeded.

(Add to A.13.7.3) The normal service load is established by the manufacturer of the electri-cal utilization equipment (for example drives, motors, process heaters). The normal condi-tions of use for the utilization equipment as it is applied to the industrial machine is established by the manufacturer of the industrial machine and documented per the requirements in 18.4 “Basic Information”.

14.1.4.2 (1) normal equip-ment use

normal equip-ment use[No change in text but add note]

(1)* In such a manner that the cable will not be damaged by normal equipment use

A.14.1.4.2 (1) The normal equipment use (for the industrial machine) is established by the industri-al machine manufacturer and is documented per the requirements in 18.8 “Operating Manual”.

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17.4.2 normal condi-tions of service

normal condi-tions of service[No change in text but add note]

17.4.2* The full-load current shown on the nameplate shall not be less than the full-load cur-rents for all motors and other equipment that can be in operation at the same time under normal conditions of use. Where unusual loads or duty cycles require oversized conductors, the required capacity shall be included in the full-load current specified on the nameplate.

A.17.4.2 The normal conditions of service is established by the manufacturer of the electrical equipment The normal conditions of use for the equipment applied to the industrial machine is established by the manufacturer of the industrial machine and documented per the requirements in 18.4 “Basic Information”.

18.4 Normal operat-ing conditions

Normal operat-ing conditions[No change this requirement is where some of the various uses of “normal” in this standard are established]

18.4* Basic Information. The technical docu-mentation shall contain, as a minimum, informa-tion on the following:(1) Normal operating conditions of the electrical equipment including the expected conditions of the electrical supply and, where appropriate, the physical environment

18.7.2 normal starting condition

normal starting condition[No change this requirement is where some of the various uses of “normal” in this standard are established]

18.7.3* Where appropriate, a diagram showing the terminals for interface connections shall be provided. Switch symbols shall be shown on the electromechanical diagrams with all supplies turned off (e.g., electricity, air, water, lubricant) and with the machine and its electrical equipment in the normal starting condition and at 20°C (68°F) ambient temperature. Control settings shall be shown on the diagram.

Normally6.3.1.1 (1) (a)(ROP Draft) 6.4.1.1 (1) (a)

normally dry locations

normally dry locations[No change in text but add note]

(a)* 30 volts ac (rms value) or 60 volts dc (rip-ple-free) when the equipment is used in normally dry locations and when large area contact of live parts with the human body is not expected

A.6.3.1.1 (1) (a) For further information see defi-nition 3.3.65.1 Dry Location

10.3.1 The col-ors RED, YELLOW (AMBER), GREEN, and BLUE are nor-mally used in this mode.

[and]The colors BLUE and WHITE are normally used in this mode. GREEN shall be permitted to be used in some cases.

Move to note:A.10.3.1 (1) The col-ors RED, YELLOW (AMBER), GREEN, and BLUE are nor-mally used in this mode.

[and]Move to note:A.10.3.1 (2) The colors BLUE and WHITE are normally used in this mode. GREEN shall be permitted to be used in some cases.

10.3.1* Modes of Use. Indicator lights and icons of color graphic interface devices shall provide the following information:(1)* Indication to attract the operator’s attention or to indicate that a certain task should be per-formed. The colors RED, YELLOW (AMBER), GREEN, and BLUE are normally used in this mode.(2)* Confirmation of a command or a condition, or the termination of a change or transition peri-od. The colors BLUE and WHITE are normally used in this mode. GREEN shall be permitted to be used in some cases.

A.10.3.1 (1) The colors RED, YELLOW (AMBER), GREEN, and BLUE are normally used in this mode.

A.10.3.1 (2) The colors BLUE and WHITE are normally used in this mode. GREEN shall be permitted to be used in some cases.

12.5.2.2 When normally enclosed

When enclosed 12.5.2.2 When normally enclosed live parts are exposed for inspection or servicing, the working space, if in a passageway or general open space, shall be suitably guarded.

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14.1.5.5 to normally sta-tionary

to stationary 14.1.5.5 Cord shall be permitted for use with connections involving small or infrequent move-ments. Cord shall also be permitted to complete the connection to normally stationary motors, limit switches, and other externally mounted devices.

Practices6.2.3.2(ROP Draft) 6.2.4.2

appropriate work practices

appropriate work practices[No change in text but add note]

6.2.3.2* Enclosure Access Where a qualified (skilled) person, using appropriate work prac-tices, needs to enter an enclosure that does not have a disconnect, one of the following condi-tions shall be met:

A.6.3.2 See NFPA 70E, Standard for Electrical Safety Requirements for Employee Workplaces, for additional information on work practices.

Preferred10.2.2.1 The preferred

colorThe preferable color

10.2.2.1 Start or On. The preferred preferable color of start or on shall be GREEN, except that BLACK, WHITE, or GRAY shall be permitted. RED shall not be used for start or on.

10.2.2.2 The preferred color

The preferable color

10.2.2.2 Stop or Off. The preferred preferable color of stop or off shall be RED, except that BLACK, WHITE, or GRAY shall be permitted. GREEN shall not be used for stop or off.

Proper4.4.4 by proper

design of the equipment or, where neces-sary, by proper additional

by design of the equipment or, where neces-sary, by addi-tional

4.4.4* Relative Humidity. The electrical equip-ment shall be capable of operating correctly within a relative humidity range of 20 to 95 percent (non-condensing). Harmful effects of relative humidity outside the permitted range shall be avoided by proper design of the equip-ment or, where necessary, by proper additional measures (e.g., built-in heaters, air conditioners, humidifiers).

6.4.1 Exception No. 2(ROP Draft) 6.5.2

with the proper functioning

with the func-tioning

Exception No. 2: Where such a provision would interfere with the proper functioning of the equipment, a durable warning notice drawing attention to the hazard and stating the delay required before entry to the enclosure is allowed shall be displayed at an easily visible location on or immediately adjacent to the enclosure con-taining the capacitance.

13.2.7.2 for the proper functioning

for the func-tioning

13.2.7.2 Special conductors such as RG -/U transmission cable shall be permitted where necessary for the proper functioning of the equip-ment.

15.4.2 so that proper cooling

so that cooling 15.4.2 Motors shall be mounted so that proper cooling is ensured and the temperature rise remains within the limits of the insulation class.

18.8.1 detailing proper procedures

detailing proce-dures

18.8.1* The technical documentation shall con-tain an operating manual detailing proper proce-dures for set-up and equipment use.

18.9.1 detailing proper procedures

detailing proce-dures

18.9.1* The technical documentation shall con-tain a maintenance manual detailing proper pro-cedures for adjustment, servicing and preventive inspection, and repair.

18.9.2 of proper operation

of operation 18.9.2 Where methods for the verification of proper operation are provided (e.g., software test-ing programs), the use of those methods shall be detailed.

Ready

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12.5 permit ready and

permit ready access and

12.5 Spaces Around Control Cabinets and Compartments. Access and working space for control cabinets and compartments operating at 600 volts, nominal, or less to ground and likely to require examination, adjustment, servicing, or maintenance while energized shall comply with the provisions of Chapter 12. Sufficient access and working space shall be provided and main-tained around all control cabinets and compart-ments to permit ready access and safe operation and maintenance of such control cabinets and compartments.

Readily11.2.2 (ROP Draft) deleted

be readily removable

be removable 11.2.2 Subassemblies. Subassemblies shall be readily removable for inspection or replacement.

12.2.2.5 group (can be is) readily iden-tified


it (can be is) identified


12.2.2.5 Terminal groups for power circuits, associated control circuits, and other control cir-cuits shall be permitted to be mounted adjacently, provided that each group (can be is) readily identified (e.g., by markings, by use of different sizes, by use of barriers, by colors).

18.7.5.2 device (can be is) readily i located


device (can be is) located


18.7.5.2 Across-referencing scheme shall be used in conjunction with each relay, output device, limit switch, and pressure switch so that any con-tact associated with the device (can be is) readily located on the diagrams.

Safe7.6.2 safe operating

speed of the equipment

safe operating speed of the equipment


7.6.2* Equipment Overspeed Protection. Where the safe operating speed of the equipment is less than that of the drive motor, means shall be provided to limit the speed of the equipment.

A.7.6.2 The safe operating speed of the equip-ment (for the industrial machine) is established by the industrial machine manufacturer and is documented per the requirements in 18.8 “Operating Manual”.

9.2.5.1.1 safe operation of the equip-ment

safe operation of the equip-ment


9.2.5.1.1* The necessary interlocks shall be pro-vided for safe operation.

A.7.6.2 The safe operation of the equipment (for the industrial machine) is established by the industrial machine manufacturer and is docu-mented per the requirements in 18.8 “Operating Manual”.

9.4.3 (1) (a)(ROP Draft) delete

safe state safe state


(a)* Lead to the shutdown of the system in a safe state

A.9.4.3 (1) (a) The safe state of the equipment (for the industrial machine) is established by the industrial machine manufacturer and is docu-mented per the requirements in 18.8 “Operating Manual”.

12.4.13 (2) allow safe dis-sipation of heat

allow dissipa-tion of heat without creat-ing a hazard

(2) Mounted and located at a sufficient distance from adjacent equipment so as to allow safe dis-sipation of heat without creating a hazard.(see also 12.2.3)

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12.5 and safe opera-tion

and safe opera-tion


12.5* Spaces Around Control Cabinets and Compartments. Access and working space for control cabinets and compartments operating at 600 volts, nominal, or less to ground and likely to require examination, adjustment, servicing, or maintenance while energized shall comply with the provisions of Chapter 12. Sufficient access and working space shall be provided and maintained around all control cabinets and compartments to permit ready and safe operation and maintenance of such control cabinets and compartments.

A.10.8.3 The anticipated safe operation of the industrial machine is established by the manu-facturer of the industrial machine and is docu-mented per the requirements in 18.8 “Operating Manual”.

Safety6.2.3.1 Exception No.2(ROP Draft) 6.2.3

safety sign shall be provided that meets the requirements of 17.2.5..

safety sign shall be provided that meets the requirements of 17.2.4.[incorrect cross-reference]

Exception No. 2: A disconnecting means used for power supply circuits within control enclo-sures to memory elements and their support logic requiring power at all times to maintain information storage shall not be required to be interlocked with the control enclosure doors. A safety sign shall be provided that meets the requirements of 17.2.5. 17.2.4.

6.3.2 (1) (ROP Draft) 6.4.2 (1)

safety isolating transformer



(1)* A safety isolating transformer

A.6.3.2 (1) For additional information on isolat-ing transformers, refer to IEC 60742 and IEC 61558-1.

6.3.2 (2) (ROP Draft) 6.4.2 (1)




(2)* A source of current providing a degree of safety equivalent to that of the safety isolating transformer (e.g., a motor generator with winding providing equivalent isolation)

A.6.3.2 (2) For additional information on isolat-ing transformers, refer to IEC 60742 and IEC 61558-1.

9.2.4 shall have the same safety requirements as the suspended safeguard itself.

shall provide at least the same or lower level of residual risk as the suspend-ed safeguard itself provided.

[and add note]

9.2.4* Overriding Safeguards. Where it is necessary to temporarily override one or more safeguards, a mode selection device or means capable of being secured (e.g., locked) in the desired mode shall be provided to prevent automatic operation. The control circuit for the suspension of a safeguard shall have provide at least the same safety requirements or lower level of residual risk as the suspended safeguard itself provided. In addition, one or more of the follow-ing measures shall be provided:

A.9.2.4 Residual risk is the acceptable level of risk, determined though analysis, that remains on an industrial machine after the application of the safeguard(s) and includes the safety control circuit(s).

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9.2.7.5 the safety requirements of the machine

the safe operation of the machine

[and add note]

9.2.7.5* Use of More Than One Operator Control Station. Where a machine has more than one operator control station, measures shall be taken to ensure that only one control station shall be enabled at a given time. Indication of which operator control station is in control of the machine shall be provided at locations where necessary for the safety requirements safe opera-tion of the machine.

A.9.2.7.5 The anticipated safe operation of the industrial machine is established by the manu-facturer of the industrial machine and is docu-mented per the requirements in 18.8 “Operating Manual”.

9.3.4.3 for safety or for continuous operation, coor-dination

for safeguard-ing or for continuous operation, their coordination

9.3.4.3 Where certain functions on the machine are required to be interrelated for safety safe-guarding or for continuous operation, their coordination shall be ensured by interlocks. For a group of machines working together in a coor-dinated manner and having more than one con-troller, provision shall be made to coordinate the operations of the controllers as necessary.

18.2(8) for safety lock-out

for safety lock-out [No change in text but add note]

(8)* Information for safety lockout procedure

A.18.2 (8) See NFPA 70E, Standard for Electrical Safety Requirements for Employee Workplaces, for additional information on lock-out practices.

18.8.2 additional safety proce-dures (where required) shall be provided

additional safety mea-sures (where required) shall be provided

18.8.2 Where the operation of the equipment can be programmed, detailed information on methods of programming, equipment required, program verification, and additional safety procedures measures (where required) shall be provided.

Satisfactory5.3.5.1 (4) for satisfactory

operationfor satisfactory operation[No change in text but add note]

(4)* Circuits supplying equipment that are required to remain energized for satisfactory operation [e.g., temperature controlled measuring devices, product (work in progress) heaters, pro-gram storage devices]

A.5.3.5.1 (4) The anticipated satisfactory opera-tion of the industrial machine is established by the manufacturer of the industrial machine and is documented per the requirements in 18.8 “Operating Manual”.

Secure12.2.1.5 maintain secure

mountingmaintain secure mounting[No change in text but add note]

12.2.1.5* Threaded fasteners with machine threads shall be used to attach components to a sub-plate and shall provide sufficient thread engagement to maintain secure mounting.

A.12.2.1.5 The requirements for installation of the threaded fasteners is established by the threaded fastener manufacturer. The normal conditions of use for the fasteners applied to the industrial machine is established by the manufac-turer of the industrial machine and documented where required needed for installation or main-tenance by the user of the industrial machine per the requirements in 18.5 “Installation Diagram” and 18.9 “ Maintenance Manual”.

12.4.6 to secure doors shall be

to hold doors close shall be

12.4.6* Fasteners used to secure hold doors close shall be of the captive type.

Securely

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12.4.9 shall be secure-ly attached

shall be attached

12.4.9 The joints or gaskets of doors, lids, cov-ers, externally mounted accessories, interconnect panels, and enclosures shall withstand the del-eterious effects of liquids, vapors, or gases used on the machine. The means used to maintain the enclosure’s degree of protection on doors, lids, and covers that require opening or removal for operation or maintenance shall be securely attached to either the door/cover or the enclosure and not deteriorate due to removal or replace-ment of the door or the cover, which would impair the degree of protection.

14.5.1.4 be securely fas-tened

be fastened 14.5.1.4 Raceways shall be securely fastened in place and supported.

14.5.3.2.1.1 be securely held be held 14.5.3.2.1.1 Conduits shall be securely held in place and supported at each end.

14.5.3.2.1.2 be securely fas-tened

be fastened 14.5.3.2.1.2 Fittings shall be compatible with the conduit and identified for the application. Fittings and conduits shall be threaded using an electrical conduit die unless structural difficul-ties prevent assembly. Running threads shall not be used on conduit for connection at couplings. Metallic tubing shall not be threaded. Where thread-less fittings are used, the conduit shall be securely fastened to the equipment.

14.5.3.3.2 be securely held

be securely fas-tened

be held

be fastened

14.5.3.3.2 Conduit shall be securely held in place and supported as specified in Table 14.5.3.3.2. In addition, conduit shall be securely fastened within 900 mm (3 ft) of each box, enclosure, or other conduit termination.

Several7.2.10.2 Several motors More than one

motor,7.2.10.2 Several motors More than one motor, each not exceeding 1 hp in rating shall be per-mitted on a nominal 120-volt branch circuit protected at not over 20 amperes or a 600-volt nominal or less branch circuit, protected at not over 15 amperes, where all of the following con-ditions are met:

10.7.3 Where several emergency

Where more than one emer-gency

10.7.3 Restoration of Normal Function After Emergency Stop. It shall not be possible to restore an emergency stop circuit until the emergency stop device has been manually reset. Where several more than one emergency stop devices are provided in a circuit, it shall not be possible to restore that circuit until all emergency stop devices that have been operated have been reset.

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Significant5.4.4 (1) no significant

dismantlingno significant dismantling[No change in text but add note]

(1)* Routine exchange of work pieces, fixtures, and tools requiring no significant dismantling of the machine

A.5.4.4.1 (1) The term “no significant dis-mantling of the machine”, refers to a level of disassembly which presents no increase in risk either by limiting the degree of dismantling or by using additional measures to mitigate the hazards presented by the activity of disassembly. Generally hazards are identified and the risk is evaluated though risk assessment methods and the establishment of a work plan based on the risk assessment, is followed for the disassembly and the maintenance or operator task that is to be performed. More information on example risk assessment methods see: ANSI B11.TR3, Risk Assessment and Risk Reduction—A Guide to Estimate, Evaluate and Reduce Risks Associated with Machine Tools, 2000.

________________________________________________________________79-4 Log #103 Final Action: Reject(Entire Document) ________________________________________________________________Submitter: J. Titus, Siemens Energy & AutomationComment on Proposal No: 79-1Recommendation: We accept all current proposed changes as detailed in the ROP with no further comments at this time.Substantiation: None provided.Committee Meeting Action: Reject Committee Statement: This comment does not offer any specific text and therefore does not comply with the Regulations Governing Committee Projects Section 4-4.5(c).Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-5 Log #40 Final Action: Accept in Principle(Entire Document) ________________________________________________________________Submitter: William Anderson, The Procter & Gamble CompanyComment on Proposal No: 79-4Recommendation: Recommendation:Reconsider proposal 79-4 (Log #142) to the misused terms “sufficient” and “suitable” contained in the main text of this standard. The details of the original recommended changes to replace the misuse of terms “sufficient” and “suitable” in the main text is as follows:(See Table on the following page.)

Substantiation: The changes in the proposal 79-4 (Log #142) are needed, based on the Manual of Style 2003 edition, 2.2.2 “Unenforceable Terms”, and Webster’s Collegiate Dictionary 10th (Manual of Style: 2003, 3.2.1.2) and the apparent intended meaning in the misuse of the terms “sufficient” and “suitable”. A vague term in a requirement is interpreted as assuming the maximum (best or worst), normal, or minimum (best or worst) situation or condition is equally applied which is often not the intent of the requirement nor its application. This comment contains the missing specific recommended text requested by the committee in the original proposal’s disposition. Comment:Reconsider the original proposal. Committee Meeting Action: Accept in Principle The following portions are accepted: 13.2.2 Ex. No. 2, 14.5.3.3.1. The following portions of this comment are rejected: 5.3.1.5 (1), 14.1.2.1 Ex. No. 1.Committee Statement: After being reviewed in the context used in accordance with Section 2.2.2.3 of the 2004 NFPA Manual of Style, these portions of the comment were rejected because the existing requirements are enforceable and are not vague.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE

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Data:Section # Current text Change to Proposed change shown

in context:Sufficient5.3.1.5(1) …dedicating sufficient space

between the top of the enclo-sure and the disconnect for the supply circuit conductors

Add: “routing and connection of”. The addition is to clarify the con-text of the intended situation where the otherwise vague term “suffi-cient” is used.

5.3.1.5(1) Mounting the disconnect as near as prac-ticable to the top of the enclosure while dedicating sufficient space between the top of the enclosure and the disconnect for the routing and connection of supply circuit conductors.

Suitable13.2.2 Exception No. 2 13.2.2 Stranded Conductors.

Exception No. 2: Conductors subject to temperatures, voltag-es, environmental conditions, or flexing exceeding the rat-ings listed in this chapter shall have suitable characteristics.

Delete the use of suitable and the exception. The exception could only be for 13.2.2 and not refer to the entire chapter. See MOS 2003 subsection 2.3.5 “Exceptions”.

13.2.2 Stranded Conductors. Exception No. 2: Conductors subject to temperatures, voltages, environmental condi-tions, or flexing exceeding the ratings listed in this chapter shall have suitable characteristics.

14.1.2.1 Exception No. 1 14.1.2.1Exception No. 1: Splices shall be permitted to leads attached to electrical equipment, such as motors and solenoids. Such splices shall be insulated with oil-resistant electrical tape or insulation equivalent to that of the conductors and installed in a suitable enclosure.

Delete “a suitable”. 14.1.2.1 Exception No. 1: Splices shall be permit-ted to leads attached to electrical equipment, such as motors and solenoids. Such splices shall be insulated with oil-resistant electrical tape or insulation equivalent to that of the conductors and installed in a suitable an enclosure.

14.5.3.3.1* 14.5.3.3.1* Rigid nonmetallic conduit (PVC Schedule 80) shall be of suitable nonme-tallic material approved for the installation of electrical conductors and identified for use where subject to physical damage.

Delete “suitable”. 14.5.3.3.1* Rigid non-metallic conduit (PVC Schedule 80) shall be of suitable nonmetallic material approved for the installation of electrical conductors and identified for use where subject to physical damage.

79-5 (Log #40)

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Report on Comments F2005 — Copyright, NFPA NFPA 79 ________________________________________________________________79-6 Log #14 Final Action: Accept in Principle(New Chapter) ________________________________________________________________Note: This comment is reported as “Reject” as it did not receive the two-thirds affirmative vote. TCC Action: The Technical Correlating Committee directs that Comment 79-6 be reported as “Reject” because it failed to achieve 2/3 affirmative vote of the Technical Committee. However, the Technical Correlating Committee also recognizes that the revisions proposed by Comments 79-64, 65, 66 and 67 were accepted by the committee and were integrated into the Committee Action text of Comment 79-6. The Technical Correlating Committee recognizes that the voting comments on Comment 79-6 all related to the location of the material within the document and not with the technical substance of the material. As such, the Technical Correlating Committee directs that the revisions from Comments 79-64, 65, 66 and 67 be integrated into the text of Proposal 79-96. Submitter: John F. Bloodgood, JFB EnterprisesComment on Proposal No: 79-96Recommendation: Delete Chapter XX (new last chapter) and redistribute proposed new sections to existing chapters as indicated: It is understood from the Committee Action that the new chapter would read as follows: XX Servo Drives and Motors [79-96] XX.2 Overload protection of the motor shall be provided as detailed in X.X.2.1.1 through X.X.2.1.2 [Delete] XX.2.1.1 Motor Amplifier/Drive. Where the amplifier/drive is marked to indicate that motor overload protection is included, additional overload protection shall not be required. XX.2.1.2 Multiple motor applications. For multiple motor applications, individual motor overload protection shall be provided. XX.3 Motor Over Temperature Protection. [79-96/79-100] XX.3.1 General. A.XX.3.1 The relationship between the motor current and motor temperature changes when the motor is operated by a servo drive. When operating at reduced speeds overheating of motors may occur at current levels less than or equal to motor rated full load current. This is the result of reduced motor cooling when its shaft-mounted fan is operating less than rated name plate RPM. XX.3.1.1 Servo drive systems shall protect against motor over temperature conditions. Over temperature protection shall be in addition to any conductor protection. Protection shall be provided by one of the following means. [Needs title] XX.3.1.1.1 Integral motor thermal protector. XX.3.1.1.2 Servo drive controller with load and speed sensitive overload protection and thermal memory detection upon shutdown or power loss. XX.3.1.1.3 Over temperature protection relay utilizing thermal sensors embedded in the motor. XX.3.1.2 Motors with Cooling Systems.XX.3.1.2.1 Motors that utilize external forced air or water cooling systems shall require over temperature protection in the event that cooling system is inoperative or has failed. [Delete section number] XX.3.1.3 Multiple Motor Applications. XX.3.1.3.1 For multiple motor application s , individual motor over temperature protection shall be provided. [Delete section number; add and “s” to application] XX.3.1.4 Automatic Restarting and Orderly Shutdown. XX.3.1.4.1 The provisions of NFPA 70-2005, 430.43 and 430.44 shall apply to the motor over temperature protection means. [Delete section number]XX.4 [Title is missing] XX.4.1 Drive Supply Conductors. [79-97] Circuit conductors supplying servo drive systems shall be sized to have an ampacity not less than 125 percent of the rated input of the equipment. XX.4.2 Motor Circuit Conductors - Minimum size and Ampacity on a Single Motor Circuit. [79-102] Motor Circuit conductors shall have an ampacity of at least 125 percent of the motor full-load current when operated in a continuous mode of operation, or as specified by the servo drive system manufacturer. Motor circuit conductors for motors operating in other than continuous mode of operation, or as specified by the servo drive system manufacturer. Motor circuit conductors for motors operating in other than continuous mode shall be permitted to have reduced ampacity based upon the design load and duty cycle. I propose that the three sections be moved as shown below: XX.2 Overload Protection: move to 7.3.4(new) and delete X.X.2.1 and renumber X.X.2.1.1, X.X.2.1.2 XX.3 Motor Over Temperature Protection move to 7.4.2 (new) [Add 7.4.1 to first paragraph of 7.3]. XX.4 Conductor size 13.6.6 (new). XX.4.1 13.6.X Servo drive system supply conductors [+XX.4.1 and XX.4.2]. And the title (and new chapter) be deleted. Also the format of the sections is not in conformance with the NFPA MOS (i.e., xx.y.z.1 but no xx.y.z.2) and unnecessary titles. There is also an inconsistency in the use of terms - servo drive, servo drive system, drive. AX.X.3.1 Change may to can [Permission to Possibility]. XX Servo Drives and Motors [79-96]Substantiation: There is no need to create a new chapter based of the proposed new sections. They better fit with other chapters currently in the

document. XX.2.1 This section adds nothing to the document. Section numbers XX.3.1.1 and XX.4.1.1 are inconsistent with the NFPA/MOS - no XX.3.1.X.2. AXX.3.1 may is permissive, can is possible.Committee Meeting Action: Accept in Principle The action of this comment to do the following: (1) Add a new 7.3.4 as follows: 7.3.4 Overload Protection for Servo Motors. 7.3.4.1 Motor Amplifier/Drive. Where the amplifier/drive is marked to indicate that motor overload protection is included, additional overload protection shall not be required. 7.3.4.2. Multiple motor applications. For multiple motor applications, individual motor overload protection shall be provided. [ROP 79-99] (2) Renumber 7.4 text as a new 7.4.1 (2002 Edition) (3) Add the following text: 7.4.2 Motor Over temperature Protection. 7.4.2.1* Servo drive systems shall protect against motor over temperature conditions. Over temperature protection shall be in addition to any conductor protection. Protection shall be provided by one of the following means. (1) Integral motor thermal protector. (2) Servo drive controller with load and speed sensitive overload protection and thermal memory detection upon shutdown or power loss. (3) Over temperature protection relay utilizing thermal sensors embedded in the motor. 7.4.2.2. Motors that utilize external forced air or water cooling systems shall require over temperature protection in the event that cooling system is inoperative or has failed. 7.4.2.3 For multiple motor application, individual motor over temperature protection shall be provided. 7.4.2.4 The provisions of NFPA 70-2005, 430.43 and 430.44 shall apply to the motor over- temperature protection means.[ROP 79-100] (4) Add the following text: 13.6.6 Servo Drive System and Motor Circuit Conductors. 13.6.6.1 Circuit conductors supplying servo drive systems shall be sized to have an ampacity not less than 125 percent of the rated input of the equipment. [ROP 79-97] 13.6.6.2 Minimum size and ampacity on a Single Motor Circuit. Motor Circuit conductors shall have an ampacity of at least 125 percent of the motor full-load current when operated in a continuous mode of operation, or as specified by the servo drive system manufacturer. Motor circuit conductors for motors operating in other than continuous mode shall be permitted to have reduced ampacity based upon the design load and duty cycle.[ROP 79-102]Committee Statement: The committee understands that by accepting this comment, some ROP proposed text from three sections will be moved as described within this comment.Number Eligible to Vote: 19Ballot Results: Affirmative: 11 Negative: 7 Ballot Not Returned: 1 GARSIDEExplanation of Negative: CALLANAN: I agree with the Task Group Report and Proposals that broke the Servo material into a separate chapter. While I agree that we should not always utilize the separater chapter approach, in this case I do believe it is warranted. DROBNICK: I prefer to see the topic of Servo Drives/Motors in a “stand alone” chapter. I believe it will make it easier for the user of the standard to find information on this important topic without having to search through the entire publication. HILBERT: I agree with those that voted negative on this comment that the requirements for Servo systems would be better located in a separate chapter. I did not see any issues in the negative comments regarding the continuity of the original proposed language and upon further review agree the placement of these requirements in a separate location outweighs any possible problems and therefore have changed my vote to negative. As I noted in my original statement on the affirmative vote, I appreciate the work done by the task group regarding the placement of the requirements for servo systems in a new chapter and support that concept. Similar practices have been used in the National Electrical Code for many years and have a proven track record. This is evident with the addition of a new Part X covering adjustable speed drives to Article 430, “Motors” in the 2005 Edition. With the ever growing popularity and use of the servo system a separate chapter is beneficial from a usability standpoint. We will have the benefit of applying the requirements for servo systems as they have been placed by the action on this comment for the 2006 Edition when considering any changes in the next revision cycle. I would encourage users of the document to weigh in on this matter in the next revision cycle as I will to continue to support the addition of a separate chapter. KNECHT: This is a unique product and belongs in a separate chapter at least until the requirements can be improved over time.

79-43

Report on Comments F2005 — Copyright, NFPA NFPA 79 MUNSON: As a member of the subcommittee that wrote the proposed Chapter on Servo Drives/Motors, I can not support the committee action to redistribute the chapter into existing chapters. Servo Drives/Motors should be in a separate chapter for minimum of two cycles to emphasis the uniqueness of this technology. It is all too common that this technology is judged as a “cross the line” motor with a starter relay. A dedicated drive controller or controllers control servomotors. Servomotors can not operate independent of the “system.” The chapter was intended to assist manufacturers who use this technology so they are not “harnessed” in during the evaluation to this standard with questions like: “What is the motor frame size?” “What is the horsepower of this motor? Neither of which pertains to a Servo Drive/motor. Servo Drives/Motors are selected based on torque, positional accuracy and voltage. As a task force member who voted against acceptance of the above comments, I genuinely believe that Servo Drives/Motors (systems) are extremely unique and are not comparable to induction motors. The purpose of the separate chapter was to obtain maximum visibility and awareness. The Task group followed the lead of the NEC NFPA 70, which has many times placed new, unique and specific requirements in one location. The industry consensus, is that this process has worked well for many years. SANDERS: Reject this action. The accepted ROP 79-96 should be retained. Not all the changes are identified in this comment per Regulations Governing Committee Project Section 4-4.5(c). It was therefore not possible to research all the specific points of concerns. Recognizing specialty motors are not unique to NFPA Standards or Code. Specifically, NFPA 70 2005 Edition, Article 430 provided a new Part X for adjustable speed motors after several editions of attempting to address them by use of exceptions of individual parts. NFPA 79 would be noting this fact by accepting proposed new Chapter XX. While a certain amount of duplication may occur, it is only to ensure that the entire servo drive system application is reviewed for a complete understanding of the requirements without sending the reader to many parts. The action of the TC to move some text into other portions of the document makes it more, not less, confusing. For example, no title has been proposed for renumbered existing 7.4 to 7.4.1 to identify what that text specifically covers, as required by MOS Section 1.8.3.2 for consistency. The asterisk of the present 7.4 points to text of A.7.4 that does relates to a specific item, and makes no mention of motor conditions. Again, fixing this on the fly without adequate review leads to these types of inconsistencies. SCHRECK: Servo Motor/drives are unique systems that do not operate separately or independent of each other. The characteristics of Servo motors are intrinsically different from those of induction motors and of the protection systems associated with them. Servo drives or controllers are typically designed and configured for a specific (servo) motor and are not readily suitable for “general use” or common applications. To include the requirements for servo controller interposed with commonly used induction motors, is to potentially cause confusion in our users, and the potential for improper application of protection devices.Comment on Affirmative: BLOODGOOD: I understand George’s concern regarding the Committee Action on Comment #79-6 (Log #14) but it must be remembered that a negative vote on the Committee Action - APR would mean that the original text would be that which would appear in the next edition of NFPA 79. It was noted in the discussion of this comment that there were a number of format and syntax problems which were corrected by the action on 79-6 Many of these problems were noted in the comments listed below. It would also impact the committee action on 79-61 (Log #11), 79-62 (Log #12), 79-63 (Log #13), 79-64 (Log #125), 79-65 (Log #26), 79-66 (Log #27), 79-67 (Log #28), and 79-68 (Log #10). Rejecting the action on 79-6 will result in denying valuable comments to correct the problems in the proposed Chapter XX. Although the requirements in the proposed Chapter XX are directed at Servo Systems they in actuality address requirements common to other components and assemblies (i.e. overload, over temperature, over current) As to the vote during the RO)C meeting, I believe that there were 12 votes to accept the Proposed action on 79-6 although it is recognized that this is only an indication of what the formal vote may be. KIIHR: I fully support the action of the Committee to Accept this Comment in Principle. The proposed addition of a separate Chapter on Servo Drives and Motors had several drawbacks associated with it. The first of these was the precedent that would be set. I was extremely concerned that if we added a separate Chapter for this topic, then every industry group with a special interest would want to have their own Chapter in the next cycle. By incorporating these specific servo requirements into the appropriate placed in the document, we have avoided this precedent. My second concern dealt strictly with the usability of the document. By creating a separate Chapter, the user would be forced to look in two different places to find similar requirements. For example, under the original proposal, if a user was interested in Overload Protection, he would not only have to look in the new Chapter, he would also still need to consult section 7.3 for the general information on Overload Protection. By incorporating all information on Overload Protection, regardless of motor type, into section 7.3, the document is

considerably more user friendly. My final concern has to do with the harmonization of NFPA79 with IEC 60204-1. The Committee has worked diligently over the past two cycles to try and match the numbering scheme of the two documents. This is once again a feature that adds greatly to the user friendliness of both documents. By creating another Chapter, we would be taking a step backwards in this effort.

________________________________________________________________79-7 Log #37 Final Action: Hold(1.1.3 (New) ) ________________________________________________________________Submitter: William Anderson, The Procter & Gamble CompanyComment on Proposal No: 79-5Recommendation: Recommendation:Either the full committee, or by a task group, construct an annex containing information concerning existing methods and/or sources, which could be used in completing the required risk assessment process. This annex would be both a guide and help in establishing future additional tools and methods requirements appropriate for industrial machine’s electrical system design to accomplish safe implementation of industrial machines using existing or state of the art components and methods. Note: The information proposed in ROP 79-147 (Log #148) (ANSI B11.TR3) is included in the suggested text for the new annex and should not be duplicated in A.4.1. A suggested beginning text for the annex is as follows: Annex X (to be determined) Resources for Risk Assessment of Industrial Machines Covered by NFPA 79 This annex is not a part of the requirements of this NFPA document but is included for informational purposes only. X.1 Methodologies. Examples of books and articles are as follows: (1) B. W., Main Risk Assessment Basics and Benchmarks. Ann Arbor, MI: Design Safety Engineering, 2004 (2) J. R. Thomson, Engineering Safety Assessment: An Introduction, Wiley, NY, 1987 (3) R. I. Mehr, R. D. Irwin, Risk Management: Concepts & Applications, Homewood, IL, 1974 (4) R. L. Brauer, Safety and Health for Engineers, Van Nostrand Reinhold, NY, 1994. (5) W. W. Lowrance, Of Acceptable Risk, William Kaufmann, Los Altos, CA, 1976 (6) W. E. Anderson, Risk Analysis Methodology Applied to Industrial Machine Development, IEEE Transaction son Industrial Applications, Jan/Feb 2005, vol. 41, no. 1 p. 180–186. X.2 Related Standards and Technical Reports. Examples of published standards and technical reports are as follows: (1) Safety of Machinery – Principles of Risk Assessment, ISO 14121: 1999 (E). (2) Safety of Machinery – Electrotechnical Aspects – Functional Safety of Electrical, Electronic and Programmable Control Systems, IEC 62061: 2005 (3) Technical Report for Machine Tools – Risk Assessment and Risk Reduction – A Guide to Estimate, Evaluate and Reduce Risks Associated with Machine Tools, ANSI B11 TR3-2000. (4) Safety of Machinery – Safety Related Parts of Control Systems – Part 100: Guide for the Use and Application of ISO 13849-1, ISO/TR13849-100: 2000. (5) Safety of Machinery – Basic Concepts, General Principles for Design – Part 1: Basic Terminology, Methodology – Section 4 – Hazards to be taken Into Account When Designing Machinery, ISO 12100-1: 2003. Substantiation: The need for this information seems apparent based upon this and many related proposals on this subject. The task of doing a risk assessment is called for in Section 4.1 and elsewhere in the standard. An example from this and other proposals in the ROP that are dealing with the risk assessment issue [e.g., 79-77 (Log #2), 79-78 (Log #21), through 79-81 (Log #24), 79-82 (Log #44), 79-84 (Log #85), 79-88 (Log #151), 79-92 (Log #153), 79-147 (Log #148), 79-148 (Log #87), 79-152 (Log #155).] An in other parts of the NFPA 79 standard (e.g., 9.2.5.3.2, 9.2.5.4.1.3), the required action by the electrical system of the industrial machine is based upon information from a risk assessment done on the machine, (mechanical, operational and electrical). Comment:I remain in agreement with the committee action on the original proposal but request the committee reconsider the proposal’s apparent intent that in some form risk assessments have done and they must continue to be performed, an aide to this necessary activity, focusing on electrical equipment of industrial machines, can be accomplished by adding an informative annex concerning sources presenting risk assessment methodologies. This proposed solution incorporates the Task Group 4 recommendation in ROP 79-147 (Log #148) by it being moved from part of A.4.1 to the new annex to be included with additional resources on methodologies that could be applied to the electrical equipment of industrial machines. Committee Meeting Action: Hold

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Report on Comments F2005 — Copyright, NFPA NFPA 79 Committee Statement: The committee understands that the recommended action of this comment is to add a new annex. This proposed text for a new annex is being judged as new material that has not had public review in accordance with the regulations governing Committee Projects Section 4-4.6.2.2(a). Hold the comment only.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-8 Log #41 Final Action: Accept(1.4) ________________________________________________________________Submitter: William Anderson, The Procter & Gamble CompanyComment on Proposal No: 79-3Recommendation: Section 1.4 has only one topic with one exception, per the Manual of Style the one topic and the exception should not be numbered. Proposed revision: Remove the numbering from topic (paragraph) 1.4.1 and exception paragraph 1.4.2.Substantiation: Manual of Style Section 1.7 Numbering Systems.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-9 Log #43 Final Action: Reject(1.6) ________________________________________________________________Submitter: William Anderson, The Procter & Gamble CompanyComment on Proposal No: 79-3Recommendation: Reconsider rejection of proposal 79-3 (Log #158), to be an AIP which include the proposed needed change in vague or unenforceable terms by either removing or modifying the text in question, this recommendation can be included with the work done by the task group formed to consider the subject of unenforceable and vague terms in the standards main text. Add the phrase, “safety as presented in this standard ” to read: 1.6 State of the Art. This standard shall not limit or inhibit the advancement of the state of the art. Each type of machine has unique requirements that shall be accommodated to provide adequate safety as presented in this standard . Reconsider the remaining corrections detailed to the rest of the document in proposal 79-3 (Log #158) with the work addressed by the task force formed to consider the subject of unenforceable and vague terms. Substantiation: The existing paragraph contains the vague terms, “adequate” and “safety”, they are not to be used within the body of codes or standards, per the subsection 2.2.2 Unenforceable Terms in the NFPA Manual of Style. The proposed addition places those terms within the context of the requirements of this standard as they apply to state of the art industrial machines thereby placing the context of the terms at a reasonably clear and enforceable level. A vague term in a requirement is interpreted as assuming the maximum (best or worst), normal, or minimum (best or worst) situation or condition is equally applied which is often not the intent of the requirement nor its application.Committee Meeting Action: Reject Committee Statement: The proposed additional text provided by this comment are not germane to the original Proposal 79-3. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-10 Log #9 Final Action: Accept(Chapter 3 Definitions) ________________________________________________________________Submitter: Technical Correlating Committee on National Electrical Code® Comment on Proposal No: 79-7Recommendation: The committee action of “Accept in Principle” for a committee generated proposal is not clear. The Technical Correlating Committee assumes that the committee intends to only modify the definitions for Bonding, Dwelling Unit, Liquidtight Flexible Nonmetallic Conduit and Overcurrent as shown in a portion of the Committee Action. The Technical Correlating Committee directs that the committee consider the comments expressed in the voting. This action will be considered by the committee as a Public Comment.Substantiation: This is a direction from the National Electrical Code Technical Correlating Committee in accordance with Sections 3-4.2 and 3-4.3 of the NFPA Regulations Governing Committee Projects.Committee Meeting Action: Accept (1) Accept the following definitions as defined in the 2005 edition of NFPA 70. 3.3.8* Bonding (Bonded). The permanent joining of metallic parts to form an electrically conductive path that ensures electrical continuity and the capacity to conduct safely any current likely to be imposed. [70:100] 3.3.12 Cable Tray System. A unit or assembly of units or sections and associated fittings forming a structural system used to securely fasten or support cables and raceways. [70:392.2] 3.3.30 Dwelling Unit. A single unit, providing complete and independent living facilities for one or more persons, including permanent provisions for

living, sleeping, cooking, and sanitation. [70:100] 3.3.40 Equipment. A general term including material, fittings, devices, appliances, luminaires (fixtures), apparatus, and the like used as a part of, or in connection with, an electrical installation. [70:100] 3.3.17.3 Liquidtight Flexible Metal Conduit. A raceway of circular cross section having an outer liquidtight, nonmetallic, sunlight-resistant jacket over an inner flexible metal core with associated couplings, connectors, and fittings for the installation of electric conductors. [70:350.2] 3.3.17.4* Liquidtight Flexible Nonmetallic Conduit (LFNC). A raceway of circular cross section of various types as follows: (1) A smooth seamless inner core and cover bonded together and having one or more reinforcement layers between the core and covers, designated as Type LFNC-A (2) A smooth inner surface with integral reinforcement within the conduit wall, designated as Type LFNC-B (3) A corrugated internal and external surface without integral reinforcement within the conduit wall, designated as LFNC-CLFNC is flame resistant and with fittings and is approved for the installation of electrical conductors. [70:356.2] A.3.3.17.4 FNMC is an alternative designation for LFNC. [70:356.2] 3.3.6.4 Live Parts. Energized conductive components. [70:100] 3.3.70* Overcurrent. Any current in excess of the rated current of equipment or the ampacity of a conductor. It may result from overload, short circuit, or ground fault. [70:100] 3.3.78* Qualified Person. One who has skills and knowledge related to the construction and operation of the electrical equipment and installations and has received safety training on the hazards involved. [70:100] 3.3.80 Receptacle (2) Retain the following definitions as written in the 2002 edition of NFPA 79. 3.3.77 Protective Conductor 3.3.83 Relative Humidity 3.3.84 Risk (3) Remove the definition of Safety Control Circuit since it is not used.Committee Statement: The committee accepts the direction of the TCC to consider all the comments expressed in the voting. See also the action on Comment 79-14.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-11 Log #21 Final Action: Accept in Principle(3.3.x Cable (New)) ________________________________________________________________Submitter: Gary J. Locke, Lockheed Martin Systems IntegrationComment on Proposal No: 79-9Recommendation: Add new text to read as follows: 3.3.x* Cable. A single-conductor, or a combination of conductors insulated from one another with a common covering that is not a cord or Type AWM Appliance Wiring Material. 3.3.x.x* Cable With Flexible Properties. A cable or special cable that is malleable but without flexing or constant flexing properties. 3.3.x.y* Flexible Cable. A cable or special cable manufactured with flexing or constant flexing properties. 3.3.x.z* Special Cable. A cable intended for specific limited purposes. A.3.3.x For additional information on types of cable refer to ANSI/NFPA 70 Chapter 3. A.3.3.x.x See 13.2.2. A.3.3.x.y See 13.2.2. A.3.3.x.z For addition information on types of special cables refer to ANSI/NFPA 70 Chapters 4, 6, 7 and 8. Substantiation: No discernible boundaries relative to what constitutes a cable have been identified. A definition for the word “cable” suitable for the purposes of NFPA 79 must be established. In the interest of safety it is incumbent upon the technical committee to do so after having expressly permitted the application of cable on industrial machinery. Guidance for the NFPA 79 user community must be provided in the form of definitions for cables as they are currently referenced in the standard - some way, some how. The original proposal should not have been rejected as it could have served as a baseline for defining cables. The original proposal - revised as identified in this comment and offered for the committee’s consideration - constitutes definitions of cables that address the committees concerns identified in the committee statement relative to the NFPA manual of style. Should the text offered in this comment be insufficient in any capacity the committee would serve the NFPA 79 user community well by using it as a baseline for further acceptable revision. As the committee has not offered concerns relative to the technical merits of the original proposal the substantiation provided therein remains appropriate and germane to this dialog.Committee Meeting Action: Accept in Principle Add new text to read as follows: 3.3.x* Cable. A combination of conductors insulated from one another with a common covering that is not a cord or Type AWM Appliance Wiring Material. 3.3.x.x* Cable With Flexible Properties. A cable or special cable that is malleable but without flexing or constant flexing properties.

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Report on Comments F2005 — Copyright, NFPA NFPA 79 3.3.x.y* Flexible Cable. A cable or special cable manufactured with flexing or constant flexing properties. 3.3.x.z* Special Cable. A cable intended for specific limited purposes. A.3.3.x For additional information on types of cable refer to ANSI/NFPA 70 Chapter 3. A.3.3.x.x See 13.2.2. A.3.3.x.y See 13.2.2. A.3.3.x.z For addition information on types of special cables refer to ANSI/NFPA 70 Chapters 4, 6, 7 and 8. Committee Statement: All single conductors by definition are not cables. Number Eligible to Vote: 19Ballot Results: Affirmative: 16 Negative: 2 Ballot Not Returned: 1 GARSIDEExplanation of Negative: FISHER: The first definition indicating that cable cannot be type AWM is too prescriptive. At least one UL standard uses the term “AWM cable”. It seems contradictory to insist on the proposed definition in light of the exceptions proposed in Comment 79-78 indicating that under certain conditions AWM conductors can be used for machine applications. Further, see my Explanation of Negative on 79-78 (Log #22). KEINATH: While I agree there needs to a definition for the term “cable”, this definition is misleading and too restrictive. Most cables used in manufacturing facilities have an AWM marking, but also have been tested to meet other cable type requirements. I believe this definition will be misleading for the users of NFPA 79, since the cables they are specifying will have AWM as one of the many markings on the cable. For example, many cables used in the automotive industry have TC (Tray Cable), TC-ER (Tray Cable Exposed Run), PLTC (Power Limited Tray Cable), MTW (Machine Tool Wiring), and AWM UL listings, but they are marked with TC and AWM markings on the cable. I do not believe it is the intent of this definition to prevent these from being classified as a cable. But according to the definition in the comment, any AWM is not considered a cable. Also, Comment 79-78, which was accepted by the committee, has an exception that allows AWM cables to be used. I believe the committee was incorrect for accepting this comment. The use of the term “cable” is used throughout the document. So we need to make sure the definition is correct and does not cause conflicts within the standard. _______________________________________________________________79-12 Log #18 Final Action: Accept(3.3.87 Safety Control Circuit) ________________________________________________________________Submitter: John F. Bloodgood, JFB EnterprisesComment on Proposal No: 79-7Recommendation: This term and its definition should be deleted from the list of definitions. 3.3.87 Safety Control Circuit. The part of the control circuit that incorporates safety related components. [This comment supports the position of Dave Fisher] Substantiation: This definition is incorrect in that a safety control circuit is surely defined by its function; not its components. Secondly, this definition is not used in the present text or in any of the proposed revisions to the text.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE

________________________________________________________________79-13 Log #97 Final Action: Accept(3.3.87 Safety Control Circuit) ________________________________________________________________Submitter: David Fisher, Rockwell Automation / Rep. NEMAComment on Proposal No: 79-7Recommendation: Delete the definition for “Safety Control Circuit”.Substantiation: The term is not used in the proposed text.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-14 Log #35 Final Action: Accept(3.3.98 Supplementary Overcurrent Protection) ________________________________________________________________Submitter: William Anderson, The Procter & Gamble CompanyComment on Proposal No: 79-17Recommendation: Comment:Editorial: Although the committee accepted change the referenced definition is not in NFPA 70:2005 70:100 it is similar to the description in NFPA 70:2005, 210.10 but it is not the same and the reference should not be shown as in the ROP recommendation. Additional Definitions in the ROP for Chapter 3 are missing references or need to be corrected. Recommendation:Remove reference. Also, the following remaining references in the ROP draft document need to be updated as indicated: 3.3.4 Adjustable Speed Drives - [70:430.2], 3.3.8 Barrier - [70E:100], 3.3.17.6 Rigid Metal Conduit (RMC) -

add “...and cables” in order for the definition to match the cross reference. Substantiation: Manual of Style, 2003; 2.3.2.10.Committee Meeting Action: Accept Committee Statement: The committee understands that the phrase comment “Remove reference.” refers to remove the extraction bracket from the definition of supplementary overcurrent protective device because the definition is not exactly the same as the definition within NFPA 70-2005.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-15 Log #38 Final Action: Reject(4.1) ________________________________________________________________Submitter: William Anderson, The Procter & Gamble CompanyComment on Proposal No: 79-20Recommendation: The committee mistakenly rejected the proposal as incorrectly implying that failures of functional safety create hazards. The mistake is because the proposed text does correctly assert the fact that failures of functional safety do in fact create additional levels of risk from the hazard which the failed safeguarding function had been used to mitigate. The committee should reconsider the proposed addition to 4.1. Add the clause “, as well as those hazards associated with safeguarding functions,” to the second sentence in Section 4.1 to read: 4.1* General Considerations. This chapter describes the general requirements and conditions for the operation of the electrical equipment of the machine. The risks associated with the hazards relevant to the electrical equipment , as well as those hazards associated with safeguarding functions, shall be assessed as part of the overall requirements for risk assessment of the machine. Substantiation: Safeguarding functions (3.3.86) in the proposal is referring to the failure of safeguarding that is used to mitigate or reduce risk of possible injury from hazard. If the safeguarding fails to function the risk from the hazard in question reappears and thus the failure of the safeguarding to function does in fact change the risk of injury from a hazard and needs to be included and addressed in the risks with the hazards relevant to the electrical equipment.Committee Meeting Action: Reject Committee Statement: The associated hazards in the inserted words could be construed as control circuit failures and are not hazards.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-16 Log #34 Final Action: Accept in Principle(4.2.1 (New) ) ________________________________________________________________Submitter: William Anderson, The Procter & Gamble CompanyComment on Proposal No: 79-23Recommendation: Recommendation: Add new subsection 4.2.1 to read as follows: 4.2.1 The electrical equipment of the machine shall satisfy the electrical safeguard requirements identified by the risk assessment of the machine. Substantiation: The identifying of the risk mitigated by the application of the electrical components or electrical devices needs to be consistent in order to meet the stated purpose of this standard (NFPA 79: 2002 Section 1.2). This proposal is intended to place the existing implied application requirement in the general operating area of the standard to more consistently utilize the information that would come from the assessment requirement in 4.1, General Conditions, and then applying it consistently in Section 4.2, Electrical Components and Devices, especially those that are used for safeguarding purposes. While 4.2 does require application to match the equipment’s capabilities utilized in the machine’s installation and use, though the conditions of ambient temperature, humidity and supply voltage are within the limits stated in the rest of Chapter 4; however, that does not necessarily satisfy meeting all the associated application risks and failure modes which could reasonably be identified during the requirement assessment in 4.1. The existing text assumes that somehow, selecting the choice of equipment, including that used for safeguarding using the general operating conditions to safeguarding applications will somehow consistently satisfy all the relevant identified risks and failure modes in its application. Again, in many cases there will be situations when electrical equipment used for safeguarding is applied following the various existing capability requirements but still may or may not satisfy the identified application risks, given a reasonable range of failure modes. The new subsection is needed to consistently connect the results of the risk assessment requirement in 4.1 with the application of the electrical equipment on the machine that is used for safeguarding. This requirement is consistent with similar requirements of equipment capability (the application risk requirements is sometimes inferred by identifying its capability but not necessarily directly matching the identified associated application risks) throughout the standard when used to mitigate risks, e.g., from NFPA 79:2000, 5.5.1, 9.2.5.3.2, 12.4.13. Placing this existing application related requirement in a new general subsection it will allow more consistent resolutions when components and devices are applied to a safeguard related function.

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Report on Comments F2005 — Copyright, NFPA NFPA 79 Comment: The committee misinterpreted the proposal which is addressing identification of the risks generated by applying capable electrical equipment for purposes of safeguarding. The confusion is between the equipment’s identified at a certain capability and its application (where the application is inconsistent with some anticipated application related failure mode). There are related but not the same as the capability requirements such as those found in Chapters 6 and 9. An example would be if a risk category 3 or 4 device was used to mitigate the risk of permanent injury or death, but only a multi channel circuit (or some other fail to safe method) was not used in applying the device. The equipment would be capable but not the application. The committee should reconsider the proposal and apply the proposed text as a new subsection to avoid any misinterpretation of the general operating conditions requirement assumed to be established and used through the rest of the standard. Committee Meeting Action: Accept in Principle In lieu of the proposed text (4.2.1(New)) in this comment, add a new last paragraph to 4.1 to read as follows:The risks associated with the hazards identified by the risk assessment shall be reduced such that the safety performance determined by the risk assessment is met.Committee Statement: The proposed text requires risks identified by the risk assessment to be reduced as necessary by the design of the electrical equipment. This is a continuation of the concept discussed in 4.1.Number Eligible to Vote: 19Ballot Results: Affirmative: 17 Negative: 1 Ballot Not Returned: 1 GARSIDEExplanation of Negative: FISHER: This well intentioned comment is accepted by the Committee does not meet the real intent for two reasons: • It fails to delineate between the associated risks that are to be mitigated by electrical means and those that are to be mitigated by other than electrical means. • It is philosophically incorrect in that the object of “risks-shall be reduced” must be either a means or a designated or agreed level. Instead the comment indicates that the object is in conformance with a predetermined performance level. The object of risk reduction is commonly articulated as some acceptable level. Conformance to a perfromance level may be a means of reduction but it is not the object. Unfortunately, the “such that” of the existing sentence is incompatible with describing a means.

________________________________________________________________79-17 Log #17 Final Action: Accept in Principle(5.1.4) ________________________________________________________________Submitter: John F. Bloodgood, JFB EnterprisesComment on Proposal No: 79-28Recommendation: I support the comment submitted by Carl Padgett. I disagree with the Committee Action to Accept wording as proposed. Change wording to read as follows: All terminals for each incoming supply circuit connection shall be legibly marked to correspond with markings on the interconnection diagrams as in when provided as described in 18.5.7.Substantiation: The use of the words “as in” in this sentence can be interpreted to mean “as an example.” The recommended language clarifies the meaning that the requirement is only when interconnection diagrams are provided.Committee Meeting Action: Accept in Principle Revise text to: All terminals for each incoming supply circuit shall be legibly marked and correspond with markings on the technical documentation. Committee Statement: It is agreed that according to 18.5.7, the interconnection diagrams are not supplied with all machines. However, there is a need for all machines to clearly mark the incoming supply circuit terminals that is consistent with technical documentation and installation diagrams. The revision to refer to the technical documentation instead of a specific type of drawing maintains the marking requirement for any allowable documentation method permitted in NFPA 79. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-18 Log #50 Final Action: Reject(5.3.1.6) ________________________________________________________________Submitter: John H. Keinath, General MotorsComment on Proposal No: 79-37Recommendation: This section should be added back in and read as follows: There shall be no exposed live parts with the disconnecting means in the open (off) position. Substantiation: This section should not be deleted. I do not agree with the substantiation: “The current 5.3.1.6 applies to exposed terminals of the disconnecting means but does not address exposed live parts of other terminations permitted in Section 5.1.” The existing statement: “There shall be

no exposed live parts with the disconnecting means in the open (off) position” also covers the guarding of potentially energized components or devices such as mini-UPS packages or capacitors located within the enclosure.Committee Meeting Action: Reject Committee Statement: The conditions noted in the substantiation are addressed according to the existing requirements for excepted circuits, 5.3.5, and protection against residual voltages, 6.5. Retaining the text of 5.3.1.6 would create a conflict with the provisions in 5.3.5 and 6.5. Number Eligible to Vote: 19Ballot Results: Affirmative: 17 Negative: 1 Ballot Not Returned: 1 GARSIDEExplanation of Negative: KEINATH: The committee should not have rejected this comment. The committee statement contends that the issue of protecting live parts against inadvertent contact, when the disconnect is off, is covered by Sections 5.3.5 and 6.5. This is not true. 5.3.5 covers excepted circuits. It only says which circuits can be left live with the disconnect off; what devices need to be used in these circuits; and how to document or label that excepted circuits are being used in the panel. Section 6.5 deals with the protection against residual voltages. This section does cover the concern about capacitors that was discussed in the comment substantiation, but it does not cover the shock hazard present for live parts of the panel when the disconnect is off. The original wording from the 2002 edition, “there shall be no exposed live parts with the disconnecting device in the open (off) position”, covers the shock hazard associated with having access to live components and circuits with the disconnect off.

________________________________________________________________79-19 Log #65 Final Action: Accept(5.3.1.7) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 5.3.1.7 portion of the proposal.Substantiation: The Committee should continue to reject as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-20 Log #66 Final Action: Accept(5.3.3.1(6)(b)) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 5.3.3.1(6)(b) portion of the proposal.Substantiation: The Committee should continue to reject as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-21 Log #1 Final Action: Accept in Part(5.3.4.1) ________________________________________________________________Submitter: Drake A. Drobnick, Visteon CorpComment on Proposal No: 79-45Recommendation: Revise text as follows: 5.3.4 Operating Handle 5.3.4.1 The center of the grip of the operating handle of the disconnecting means, when in its highest position, shall not be more than 2.0 m (6 ft 7 in.) above the floor. shall be located between 0.6 m (2 ft) and 2.0 m (6 ft 7 in.) above the servicing level. A permanent operating platform, readily accessible by means of a permanent stair or ladder shall be considered as the flow the servicing level for the purpose of this requirement. Substantiation: The added language harmonizes the NFPA 79 document with IEC 60204, Section 5.3.4, Operating Handle and provides guidance parameters for mounting equipment disconnecting means. I disagree with the committee’s statement that this range of heights is “too restrictive”.Committee Meeting Action: Accept in Part Revise to read as follows: 5.3.4.1 The center of the grip of the operating handle of the disconnecting means, when in its highest position, shall not be more than 2.0 m (6 ft 7 in.) above the servicing level . A permanent operating platform, readily accessible by means of a permanent stair or ladder shall be considered the servicing level for the purpose of this requirement. Committee Statement: The committee rejects a portion of the comment that introduces the 2 foot limitation on the lower end because it is overly restrictive for some applications. The committee accepts the portion that defines the measurement from the servicing level.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE

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Report on Comments F2005 — Copyright, NFPA NFPA 79 Comment on Affirmative: HILBERT: I voted with the committee and support this change. However, from an interpretation standpoint, the revised text in the last sentence can give the impression that the “servicing level” being considered by the section is only an operating platform that is accessible by a permanent stair or ladder. It is important for those interpreting this language to understand that a permanent operating platform that is readily accessible by means of a permanent stair or ladder is only one type of “servicing level” being considered by the section.

________________________________________________________________79-22 Log #8 Final Action: Reject(5.3.4.1 Exception (New) ) ________________________________________________________________Submitter: Edward Karl, Applied MaterialsComment on Proposal No: 79-45Recommendation: Add the following new exception: Exception: Switches and circuit breakers installed adjacent to motors, appliances, or other equipment that they supply shall be permitted to be located higher than specified in the foregoing and to be accessible by portable means.Substantiation: Alignment with Exception clause of National Electrical Code, Article 404.8(A).Committee Meeting Action: Reject Committee Statement: The supply circuit disconnecting means is for disconnecting all machine power other than excepted circuits and therefore would not be located directly before the load. The main supply circuit disconnect must be readily accessible without the need for portable ladders. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-23 Log #2 Final Action: Reject(5.3.4.2) ________________________________________________________________Submitter: Drake A. Drobnick, Visteon CorpComment on Proposal No: 79-46Recommendation: Add new (4) to read as follows: (4) Be in control of the disconnect at all times, independent of the position of the associated door.Substantiation: The additional language harmonizes the NFPA 79 document with IEC 60204, Section 5.3.4, Operating Handle and ensures employee safety by requiring the handle to immediately operate the disconnecting means when actuated. I disagree with the committee’s statement that the proposal is already covered by 5.3.3.1(5).Committee Meeting Action: Reject Committee Statement: The recommended text is addressed by 5.3.3.1(3) and 5.3.3.1(5). The proposed text does not appear in clause 5.3.4 of IEC60204-1.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-24 Log #67 Final Action: Accept(5.4.1) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 5.4.1 portion of the proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-25 Log #68 Final Action: Accept(5.4.2) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to accept the recommended change to 5.4.2.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE

________________________________________________________________79-26 Log #69 Final Action: Accept(5.4.4(2)(b)) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 5.4.4(2)(b) portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-27 Log #7 Final Action: Accept(5.5.5 Exception (New) ) ________________________________________________________________Submitter: Edward Karl, Applied MaterialsComment on Proposal No: 79-55Recommendation: Add the following new exception: Exception: Switches and circuit breakers installed adjacent to motors, appliances, or other equipment that they supply shall be permitted to be accessible by portable means.Substantiation: Alignment with exception clause of National Electrical Code, Article 404.8(A).Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDEComment on Affirmative: GOETZ: It is understood that the exception is intended to apply to 5.5.5(1) only and not to the entire text of 5.5.5, including 5.5.5(2) - 5.5.5(4).

________________________________________________________________79-28 Log #70 Final Action: Reject(6.2.1) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept this proposal in principle. Replace the words “can be” following the word “it” ” in the second sentence with the word “is.” The new sentence would read “Such insulation shall be capable of withstanding the mechanical, chemical, electrical, and thermal stresses to which it is subjected under normal conditions. Reject the remainder of the proposal.Substantiation: As revised clarity will be added to the section and the revision is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Reject Committee Statement: The language is clear and enforceable as written. No additional clarity is gained by the proposed wording of this comment.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-29 Log #71 Final Action: Accept(6.2.2.1) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 6.2.2.1 portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-30 Log #73 Final Action: Accept in Principle(6.2.3.1) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the proposal in principle in part. Remove the words “can be” opened after the word “doors” in the first sentence. The new sentence will read “Each disconnecting means mounted within or adjacent to a control enclosure that contains live parts operating at 50 volts ac (rms value) or 60 volts dc or more shall be mechanically or electrically interlocked, or both, with the control enclosure doors so that none of the doors open unless the power is disconnected.”Substantiation: As revised clarity will be added to the section and the revision is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.

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Report on Comments F2005 — Copyright, NFPA NFPA 79 Committee Meeting Action: Accept in Principle Revise the first sentence of 6.2.3.1 to reads as follows: “When required by 5.3.1.4, each disconnecting means mounted within or adjacent to a control enclosure that contains live parts operating at 50 volts ac (rms value) or 60 volts dc or more shall be mechanically or electrically interlocked, or both, with the control enclosure doors so that none of the doors open unless the power is disconnected.” Committee Statement: Editorially revise the text of this comment by removing the duplicate word “doors.” The action taken on this comment only modifies the first sentence of 6.2.3.1 and does not involve action on any other portion of Proposal 79-1. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-31 Log #16 Final Action: Reject(6.2.3.1.1.1 (New) ) ________________________________________________________________Submitter: John F. Bloodgood, JFB EnterprisesComment on Proposal No: 79-62Recommendation: This comment supports Dave Fisher’s position on this proposal. First, the proposal does not provide specific OSHA data that indicates the need for the proposed protection against electrical shock inside the control enclosure. Secondly, the Committee Action went way beyond the proposal to require protection against unintentional contact and, in fact, required protection against deliberate contact. The requirement to protect live parts against contact by the articulating finger, essentially equivalent to protection against deliberate contact, is unnecessarily demanding. Controls suppliers commonly provide plastic shields for mounting over starters and disconnects that provide protection against unintentional or inadvertent contact. However, these shields do not prevent contact with the articulating finger. To meet this requirement would require customized shields that would basically cover the starter or disconnect completely with slits for the incoming and load power conductors. For larger equipment it may be necessary to cover the slits under the conductors. It is possible to provide such shielding, but it is not practical and it is difficult to believe that such shielding would remain on the equipment during the course of normal maintenance. Substantiation: It should be remembered that the requirements of NFPA 70E and the OSHA regulations prohibit access to a live panel without appropriate personal protection.Committee Meeting Action: Reject Committee Statement: This comment does not offer any specific text and therefore does not comply with the Regulations Governing Committee Projects Section 4-4.5(c).Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-32 Log #74 Final Action: Accept(6.2.3.2(2)) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 6.2.3.2(2) portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the recommendation changes the application of the requirement and the text as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-33 Log #98 Final Action: Accept(6.2.3.4) ________________________________________________________________Submitter: David Fisher, Rockwell Automation / Rep. NEMAComment on Proposal No: 79-62Recommendation: Revise text as follows: 6.2.3.4 When provided with a defeat mechanism in 6.2.3.1, all live parts within 150 mm (6 in.) of parts likely to be touched when resetting r adjusting devices intended for such operations while the equipment is still connected, (such as operating handles, reset buttons, or adjusting devices) shall be protected from direct contact by the jointed test finger n Figure 6.2.2.1 and other live parts operating at over 50 volts mounted on the inside of doors shall be protected from unintentional direct contact from a 50 mm (2 in.) sphere by means of an obstacle. When provided with a defeat mechanism as permitted in 6.2.3.1, live parts mounted on the inside of doors that are operating at over 50 volts shall be protected from unintentional direct contact by the inherent design of components or the application of barriers or obstacles such that a 50 mm (2 in.) sphere cannot contact any of the live parts in question. Substantiation: First, the rationale for the proposal does not provide specific OSHA data that indicates the need for the proposed protection against electrical shock inside the control enclosure.

Secondly, the Committee action went way beyond the initial proposal to require protection against unintentional contact and, in fact, required protection against deliberate contact. The requirement to protect live parts against contact by the articulating finger, essentially equivalent to protection against deliberate contact is unnecessarily demanding. Controls suppliers commonly provide plastic shields for mounting over motor starters and disconnects that provide protection against unintentional or inadvertent contact. However, these shields do not prevent contact with the articulating finger. To meet this requirement would require customized shields that would basically cover the starter or disconnect completely with slits for the incoming and load power conductors. For larger equipment it may be necessary to cover the slits under the conductors. It is possible to provide such shielding, but it is not practical and it is difficult to believe that such shielding would remain on the equipment during the course of normal maintenance. To my knowledge, neither OSHA, NFPA nor UL recognizes “finger safe design” as protection against electric shock. Both NFPA 70E and the OSHA regulations prohibit access to a live panel without appropriate personal protection. As such the requirement for the additional protection on the panel mounted equipment only results in additional cost with no appreciable increase in safety. On the other hand, the requirement to provide some protection from the live parts of components on the inside of a door, that can be moved unexpectedly, is reasonable. Most of the components commonly mounted on doors already meet the proposed requirement by their inherent design.)Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-34 Log #72 Final Action: Accept(6.2.3(4)) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the proposal in principle in part. Replace the word “cannot” following the word “terminals” with the words “does not.” The revised sentence would read:(4) An identified electronic power supply conforming to appropriate standards specifying measures to be taken to ensure that, even in the case of an internal fault, the voltage at the outgoing terminals does not exceed the values specified in 6.3.1.1(1).Substantiation: As revised clarity will be added to the section and the revision is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Committee Statement: The committee action on this comment modifies the text in Section 6.3.2(4).The action taken on this comment only modifies (4) of 6.3.2 and does not involve action on any other portion of Proposal 79-1. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-35 Log #75 Final Action: Reject(7.2.1.1) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 7.2.1.1 portion of the proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Reject Committee Statement: The language is clear and enforceable as written. No additional clarity would be gained by accepting the proposed wording in Proposal 79-1. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-36 Log #96 Final Action: Accept(7.2.1.4) ________________________________________________________________Submitter: Charles A. Goetz, Underwriters Laboratories Inc.Comment on Proposal No: 79-66Recommendation: The proposed 7.2.1.4 should be revised as follows: 7.2.1.4 A circuit breaker , self-protected combination motor controller or a manual motor controller suitable as tap conductor protection in group installations or motor controller marked with a slash rating, such as 120/240v or 480Y/277V, shall be permitted to be applied in a solidly grounded circuit where the nominal voltage of any conductor to ground does not exceed the lower of the two values of the circuit breaker’s voltage rating and the nominal voltage between any two conductors does not exceed the higher value of the circuit breaker’s voltage rating. When slash rated devices are connected to the supply circuit of the machine, the nameplate voltage rating in 17.4.1(3) shall

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Report on Comments F2005 — Copyright, NFPA NFPA 79 not exceed the lower voltage rating or shall include the complete slash rating. When slash rated devices are connected to the secondary of a transformer forming part the electrical equipment of the machine, the transformer secondary shall be grounded such that the line-to-line voltage for each phase and voltage to ground for any pole do not exceed the respective slash ratings. Add a new A.17.4.1(3) to Annex A to provide guidance to 7.2.1.4 and associated information that may impact the voltage rating applied to the machine nameplate included in the revised 7.2.1.4 above: A.17.4.1(3) When overcurrent devices with a slash rating, such as 120/240, 480Y/277, or 600Y/347V, are connected to the supply circuit, see 7.2.1.4. Substantiation: The inclusion of the term “motor controllers” is too vague and implies that ordinary contactors and switches having no inherent overcurrent protection features may need to be considered with regard to this requirement. There are two specific constructions of motor controller where this requirement does apply, namely self-protected combination motor controllers and manual motor controllers suitable for tap conductor protection in group installations, that are relied upon to provide overcurrent protection functions in addition to motor control. The proposed 7.2.1.4 should be revised to replace the term “motor controllers” with the specific devices to which the requirement applies. Also, subsequent references to circuit breakers are not needed and can be deleted to clarify the requirement applies to all slash rated components. The inclusion of the term “permitted to be” implies there may be other possible installations, when it is the only intended installation. Deletion of the phrase clarifies its application at the higher voltage is limited to a solidly grounded wye source. While text of the requirement is technically correct, the application of the requirement to slash rated components within machinery with respect to their supply source is not discussed. That is, the need for connection to the specific supply voltage arrangement at installation must be communicated to the installer of the equipment, or if supplied via a voltage derived within the equipment, the derived voltages must not exceed the slash rating. The proposal should be revised to include a reference to include the slash voltage rating on the nameplate or to arrange derived voltage sources in order to meet the requirement. The addition of Annex A note for A.17.4.1(3) provides a reference back to 7.2.1.4 which may apply to the rated voltage provided on the nameplate.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-37 Log #76 Final Action: Accept(7.2.9) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 7.2.9 portion of the proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-38 Log #77 Final Action: Accept(7.2.10.3) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 7.2.10.3 portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable and is in line with the language in the Section 430.110 (C) of the National Electrical Code which covers the same issues.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-39 Log #78 Final Action: Accept(7.3.1.2) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 7.3.1.2 portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE

________________________________________________________________79-40 Log #64 Final Action: Reject(7.3.3.2) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the proposal in principle in part. Replace the words “cannot be” between the words “that” and “adequately” with the words “are not.” The new sentence would read “Short-time-rated motors or high reversing duty motors that are not adequately ….. (The remainder of the sentence remains the same.)Substantiation: As revised clarity will be added to the section and the revision is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Reject Committee Statement: The language is clear and enforceable as written. No additional clarity would be gained by accepting the proposed wording in this comment. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-41 Log #80 Final Action: Accept(7.4) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 7.4 portion of the proposal. Editorially revise the word “causes” to “cause”.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-42 Log #81 Final Action: Reject(7.5.1) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 7.5.1 portion of the proposal. As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Reject Committee Statement: The language is clear and enforceable as written. No additional clarity would be gained by accepting the proposed wording in Proposal 79-1. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-43 Log #82 Final Action: Accept(7.5.2) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 7.5.2 portion of the proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-44 Log #83 Final Action: Accept(7.5.3) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 7.5.3 portion of the proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE

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Report on Comments F2005 — Copyright, NFPA NFPA 79 ________________________________________________________________79-45 Log #84 Final Action: Accept(7.8) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 7.8 portion of proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-46 Log #86 Final Action: Reject(8.2.1) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 8.2.1 portion of the proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Reject Committee Statement: The language is clear and enforceable as written. No additional clarity would be gained by accepting the proposed wording in Proposal 79-1. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-47 Log #49 Final Action: Accept(8.2.1.1) ________________________________________________________________Submitter: John H. Keinath, General MotorsComment on Proposal No: 79-72Recommendation: This section should read as follows: The machine and all exposed, noncurrent-carrying conductive parts, material, and equipment likely to be energized shall be effectively grounded. Where electrical devices are mounted on metal mounting panels that are located within nonmetallic enclosures, the metal mounting panels shall be effectively grounded. Where specified by the manufacturer, components and subassemblies shall be bonded to the equipment grounding (protective bonding) circuit in accordance with the manufacturer’s instructions. Substantiation: The term “effectively” should not be deleted from the section (including the editorial revision made by the Committee). This term is defined in the IEEE Standard dictionary Std. 100 as follows (only part of definition is included below): “(2) Intentionally connected to earth through a ground connection or connections of sufficiently low impedance and having sufficient current-carrying capacity to limit the buildup of voltages to levels below that which may result in undue hazard to persons or to connected equipment.” The term is “enforceable” and can be evaluated to ensure the “hazardous voltage build-up” does not occur during the fault conditions that could occur in the installation. If necessary, this definition could be added to Clause 3 of the document.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-48 Log #23 Final Action: Accept(8.2.2.3.1) ________________________________________________________________Submitter: Michael H. Appold, Delphi CorporationComment on Proposal No: 79-73Recommendation: Delete all of 8.2.2.3.1.Substantiation: Refer to TCC committee action statement on the ROP. The first sentence of the committee statement keeps 8.2.2.3.1 since it allows structural members to be part of the equipment grounding circuit, which is already allowed by 8.2.3.1. The second sentence of the committee statement deals with electrical equivalence - which Chapter 19 Testing and Verification more accurately measures. 8.2.2.3.1 adds nothing “enforceable” except by extreme calculations, and therefore should be dropped.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE

________________________________________________________________79-49 Log #99 Final Action: Accept(8.2.2.3.1) ________________________________________________________________Submitter: David Fisher, Rockwell Automation / Rep. NEMAComment on Proposal No: 79-73Recommendation: Delete the entire section.Substantiation: The Committee Statement notes that 8.2.2.3.1 permits the use of the structure of the machine to be used as part of the equipment grounding circuit. This is a true statement and, in fact, the last sentence (before the Exception of 8.2.1) requires that all exposed conductive parts of a machine be connected to the equipment grounding circuit. It would appear that the only reason that this section was not deleted is that some see it as the allowance to substitute machine elements for the equipment grounding conductor that is implicitly required in 8.2.1. such a substitution should not be allowed for the following reasons: • in accepting Log #88 the Committee agreed with the necessity of placing the equipment grounding conductor as close as possible to the phase conductor to minimize the loop impedance in the event of a fault. Quick clearing of the protective devices in the event of a fault, necessary to minimize exposure to hazardous touch voltages is dependent upon low loop impedance; • in 8.2.3.5, NFPA 79 disallows the use of raceways, wireways or table trays to be substituted as equipment grounding conductors; • the effectiveness of machine elements for operational bonding (functional bonding in IEC) is quickly diminished as the frequency goes up, e.g., by higher harmonics generated by electronic drives. (IEC 60204-1 does not allow such substitutions simply because the integrity of continuity of machine elements and their impedance cannot usually match that of a properly sized and installed copper equipment grounding conductor.)This is not original material; its reference/source is as follows: See IEC 60204-1 (2005). Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-50 Log #87 Final Action: Accept(9.2.5.2.2) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 9.2.5.2.2 portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-51 Log #88 Final Action: Accept(9.2.5.4.2.2) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 9.2.5.4.2.2 portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable.

Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-52 Log #24 Final Action: Accept(9.2.7.3.2(2)) ________________________________________________________________Submitter: Michael H. Appold, Delphi CorporationComment on Proposal No: 79-75Recommendation: Revise text as follows: (2) When a fault is detected in the cables cableless control. Substantiation: A “typo” in the ROP draft.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE

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Report on Comments F2005 — Copyright, NFPA NFPA 79 ________________________________________________________________79-53 Log #3 Final Action: Reject(9.4.1) ________________________________________________________________Submitter: Drake A. Drobnick, Visteon CorpComment on Proposal No: 79-92Recommendation: I suggest the Chairman appoint a Task Group to: • define risk assessment • review all current and proposed strategies to accomplish assessments. • propose language to address intended and unintended machine and control system operations, which impact the safety of equipment and personnel.Substantiation: Many proposals have been presented this cycle containing the phrase “risk assessment”. The current standard also discusses this term in Section 4.1 there is no guidance provided by the 79 document, other than annexed references, to help the reader accomplish this requirement.Committee Meeting Action: Reject Committee Statement: This comment does not offer any specific text and therefore does not comply with the Regulations Governing Committee Projects Section 4-4.5(c).Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-54 Log #4 Final Action: Reject(9.4.1) ________________________________________________________________Submitter: Drake A. Drobnick, Visteon CorpComment on Proposal No: 79-78Recommendation: Revise text to Section 9.4.1 as follows: When required by a risk assessment of the equipment, the device, system, or interface, A control reliable system shall be designed, constructed, and installed such that a single component failure within the device, interface, or system control system shall not prevent normal stopping action from taking place being applied but, shall prevent a successive machine cycle until the failure is corrected. The failure shall be detectable by a simple test, or indicated by the control system. The requirement does not apply to those components whose function does not affect the safe operation of the machine tool. Substantiation: I disagree with the committee’s statements on rejecting this proposal. The proposal states three requirements: 1. Control system failures do not prevent the machine from stopping. 2. Control system failures prevent subsequent automatic cycling 3. Control system failures be readily detectable or self indicated. The proposal enhances employee and equipment safety by mitigating the effects of control system malfunctions.Committee Meeting Action: Reject Committee Statement: This text is unnecessary in the light of 9.4.3.4.2. It introduces a term “control reliable system” that is not used anywhere in the document.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-55 Log #15 Final Action: Accept in Principle(9.4.1) ________________________________________________________________Submitter: John F. Bloodgood, JFB EnterprisesComment on Proposal No: 79-92Recommendation: Delete the proposed change: The electrical control circuits shall have an appropriate level of safety performance that has been determined from the risk assessment of the machine. Substantiation: The term “performance level” is neither defined or referenced to another standard. It is noted that the revision of ISO 13849-1 (draft) does define this term and goes into great detail covering the concept of this term but the standard is still under development and it is estimated that this revised standard will not be published for another two years (if ever). Also, risk assessment is not intended to determine performance level.

Committee Meeting Action: Accept in Principle Revise the last sentence of 9.4.1 to read as follows: The electrical control circuits shall have an appropriate level of performance that has been determined from the risk assessment of the machine.Committee Statement: The text was revised to capture the intent of the sentence without implying a specific level of performance such as “safety integrity level”, “category” and “performance level.”Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-56 Log #89 Final Action: Accept(9.4.1) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 9.4.1 portion of the proposal.

Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-57 Log #90 Final Action: Accept(9.4.2.2.2) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 9.4.2.2.2 portion of the proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-58 Log #45 Final Action: Accept in Principle(9.4.3.4.2(1)) ________________________________________________________________Submitter: John H. Keinath, General MotorsComment on Proposal No: 79-75Recommendation: In this section Item (1) should read as follows: (1) In the event of any single failure that leads to a hazardous condition, perform as follows: Substantiation: The text from proposals 79-75 and 79-104 are too restrictive and do not cover the cases when a failure does not lead to an unsafe condition within a control system that uses software or firmware based controllers. Some control systems using software or firmware based controllers to perform safety related functions also have non-safety related functions. A failure in these non-safety functions should not require the system to shut down to a safe state. For example, some safety PLCs perform both the safety functions and control functions on a machine. Furthermore, firmware and software based safety systems can tolerate some failures and still maintain their same safety performance level. For example, safety networks do allow bad or failed network messages to occur without creating a stop condition as long as these systems receive a valid message within the allotted response time of the safety system. Another example is the use of a 2 out of 3 safety processor voting system. In this case, only two processors have to agree at any one time. If one processor fails, the safety system can continue to run on the two other processors. This is used in safety applications where high availability is needed.Committee Meeting Action: Accept in Principle Revise Item (1) to read as follows:(1) In the event of any single failure, the failure shall not lead to the loss of the safety function. Safety function is the ability to self monitor and stop the application.Committee Statement: The added words are unnecessary since the introductory sentence already covers the concept recommended in the comment.Number Eligible to Vote: 19Ballot Results: Affirmative: 16 Negative: 2 Ballot Not Returned: 1 GARSIDEExplanation of Negative: FISHER: The effort to improve on the comment was not helpful in that the underlying assumptions relate to the traditional deterministic (relays with known failure modes) view of dealing with failures rather than the probabilistic approach to dealing with failures of complex components (PLCs) whose failure modes are not easily identified or individually addressed. In the probabilistic (PLC) world it is not possible to say that “no single failure shall” as we did in the deterministic world. We can only say that within a given probability “no single failure will”. It is for this reason that I believe that it is better to leave the old words as they were rather than pretend that we have addressed a problem which clearly has not been addressed. KIIHR: As a result of the action taken by the Committee on this Comment, the sub-items (a), (b) and (c) are no longer written as requirements. The way that the requirement will read as a result of this action is as follows: 9.4.3.4.2 Control systems incorporating software and firmware based controllers performing safety-related functions shall conform to all of the following: (1) In the event of any single failure, the failure shall not lead to the loss of the safety function. Safety function is the ability to self monitor and stop the application. (a) Lead to the shutdown of the system in a safe state (b) Prevent subsequent operation until the component failure has been corrected (c) Prevent unintended startup of equipment upon correction of the failure (2) Provide protection equivalent to that of control systems incorporating hardwired components

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Report on Comments F2005 — Copyright, NFPA NFPA 79 (3) Be designed in conformance with an approved standard that provides requirements for such systems By changing the text of 9.4.3.4.2 (1), we have lost the reference to sub-items (a), (b) and (c), and they do not have any reason to exist. For this reason, I must vote negative on this action. However, if the NFPA Editors have the authority to correct this oversight, I recommend the following modification: 9.4.3.4.2 Control systems incorporating software and firmware based controllers performing safety-related functions shall conform to all of the following: (1) In the event of any single failure, the failure shall not lead to the loss of the safety function. Safety function is the ability to self monitor and stop the application. Detection of such a failure shall:(a) Lead to the shutdown of the system in a safe state (b) Prevent subsequent operation until the component failure has been corrected (c) Prevent unintended startup of equipment upon correction of the failure (2) Provide protection equivalent to that of control systems incorporating hardwired components (3) Be designed in conformance with an approved standard that provides requirements for such systems The addition of the words “Detection of such a failure shall:” will once again make sub-items (a), (b) and (c) a part of the requirement.

________________________________________________________________79-59 Log #91 Final Action: Accept(10.2.3.1) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 10.2.3.1 portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-60 Log #92 Final Action: Accept(10.3.1(1)) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 10.3.1(1) portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-61 Log #11 Final Action: Reject(Chapter 11 ) ________________________________________________________________Submitter: John F. Bloodgood, JFB EnterprisesComment on Proposal No: 79-100Recommendation: See my comments on Proposal 79-96.Substantiation: See my comments on Proposal 79-96.Committee Meeting Action: Reject Committee Statement: The concerns of the submitter have been addressed by the action taken on Comment 79-6. This comment does not offer any recommended of text. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-62 Log #12 Final Action: Reject(Chapter 11 ) ________________________________________________________________Submitter: John F. Bloodgood, JFB EnterprisesComment on Proposal No: 79-99Recommendation: See my comments on Proposal 79-96.Substantiation: See my comments on Proposal 79-96.Committee Meeting Action: Reject Committee Statement: The concerns of the submitter have been addressed by the action taken on Comment 79-6. This comment does not offer any recommendation or text. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE

________________________________________________________________79-63 Log #13 Final Action: Reject(Chapter 11 ) ________________________________________________________________Submitter: John F. Bloodgood, JFB EnterprisesComment on Proposal No: 79-97Recommendation: See my comments on Proposal 79-96.Substantiation: See my comments on Proposal 79-96.Committee Meeting Action: Reject Committee Statement: The concerns of the submitter have been addressed by the action taken on Comment 79-6. This comment does not offer any recommendation or text. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-64 Log #25 Final Action: Accept in Principle(Chapter 11) ________________________________________________________________TCC Action: See the TCC Note on Comment 79-6 (Log #14). Submitter: Michael H. Appold, Delphi CorporationComment on Proposal No: 79-99Recommendation: Revise text to read as follows: XX.2.1 Overload protection of the motor shall be provided for each motor. as detailed in XX.2.1.1 through XX.2.1.2. Substantiation: The ROP wording is unclear. It disallows overloads external to the drive for a single motor per drive application? “shall be provided as detailed in...” appears to require only overloads internal to the drive, or external (additional) overloads for multiple motor applications. This comment’s wording clarifies XX.2.1.1 and XX.2.1.2 as sub-items of the main issue: being that overloads are required for all motors.Committee Meeting Action: Accept in Principle Committee Statement: See Comment 79-6, which meets the intent of the submitter by relocating the overload provisions to 7.3.4.Number Eligible to Vote: 19Ballot Results: Affirmative: 13 Negative: 5 Ballot Not Returned: 1 GARSIDEExplanation of Negative: CALLANAN: See my Explanation of Negative Vote on Comment 79-6. DROBNICK: I prefer to see the topic of Servo Drives/Motors in a “stand alone” chapter. I believe it will make it easier for the user of the standard to find information on this important topic without having to search through the entire publication. MUNSON: See my Explanation of Negative Vote on Comment 79-6. SANDERS: Reject this action. Not all changes are identified per Regulations Governing Committee Project Section 4-4.5(c). The ROC comment misunderstands the basic difference between standard induction motors overload protection requirements and servo drive assemblies. An induction motor is discrete component of a protection assembly where the complete package is not under engineering design constraint. In addition, these protective measures can be modified in the field and may result in loss of the anticipated protection. Servo drive assemblies are selected based upon the load torque requirements that dictates the voltage potential and are electronically monitored across the entire assembly so the drive, the individual motor (rotary or linear) and the matched conductor assembly are all being constantly verified. Single drives can direct multiple motors for multi-axis operations, and it is desirable to take individual motors off line and allow the operation to shut down in a controlled manner to avoid tool breakage or part shrapnel to be ejected. It requires a complete reengineering of a servo drive assembly application to effect any changes, thus making any discrete component field changes very difficult if not impossible. It is understood the reference given in the comment concerning XX3.5 should be “430.43” and not “430.343”. SCHRECK: The committee comment refers back to comment 79-6 which would disperse the requirement into other sections of the standard to apply to induction motors. To include the requirements for servo controller interposed with commonly used induction motors, is to potentially cause confusion in our users, and the potential for improper application of protection devices.

________________________________________________________________79-65 Log #26 Final Action: Accept in Principle(Chapter 11) ________________________________________________________________TCC Action: See the TCC Note on Comment 79-6 (Log #14). Submitter: Michael H. Appold, Delphi CorporationComment on Proposal No: 79-100Recommendation: Organize XX.3 as follows: XX.3* Motor Over Temperature Protection. XX.3.1 Servo drive systems shall protect against motor over temperature conditions. Protection shall be provided by one of the following means: (1) Integral motor thermal protector.

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Report on Comments F2005 — Copyright, NFPA NFPA 79 (2) Servo drive controller with load and speed sensitive overload protection and thermal memory detection upon shutdown or power loss. (3) Over temperature protection relay utilizing thermal sensors embedded in the motor. (4) Motors with cooling systems. XX.3.2 Over temperature protection shall be in addition to any conductor protection. XX.3.3 Motors that utilize external forced air or water cooling systems shall require over temperature protection in the event that cooling system is inoperative or has failed. XX.3.4 For multiple motor application, individual motor over temperature protection shall be provided. XX.3.5 The provisions of NFPA 70-2005, 430.343 and 430.44 for automatic restarting and orderly shutdown shall apply to the motor over temperature protection means.Substantiation: Current numbering scheme is confusing, it is difficult to tell what items are sub items or new topics. ROP results do not follow the style manual or the style of the rest of the document. Example: We should not have a XX.3.1 without an XX.3.2, etc. This comment has kept all the ROP words; and has moved the general * pointer for an Annex A item to the main item XX.3. Additional comments affect this section for content.Committee Meeting Action: Accept in Principle Committee Statement: See Comment 79-6 which meets the intent of the submitter.Number Eligible to Vote: 19Ballot Results: Affirmative: 13 Negative: 5 Ballot Not Returned: 1 GARSIDEExplanation of Negative: CALLANAN: See my Explanation of Negative Vote on Comment 79-6. DROBNICK: I prefer to see the topic of Servo Drives/Motors in a “stand alone” chapter. I believe it will make it easier for the user of the standard to find information on this important topic without having to search through the entire publication. MUNSON: See my Explanation of Negative Vote on Comment 79-6. SANDERS: Reject this action. Reject the comment that the text is presented in a confusing sequence, XX.1 covers conductors from the supply, XX.2 covers overload protection, XX.3 covers motor over temperature protection, and XX.4.2 covers conductors associated with the drive and directed/monitored motors(s). Reject the moving of the annex pointer asterisk to the main title. The annex text is not germane to all parts of XX.3, just XX.3.1. SCHRECK: The committee comment refers back to comment 79-6 which would disperse the requirement into other sections of the standard to apply to induction motors. To include the requirements for servo controller interposed with commonly used induction motors, is to potentially cause confusion in our users, and the potential for improper application of protection devices.

________________________________________________________________79-66 Log #27 Final Action: Accept in Principle(Chapter 11) ________________________________________________________________TCC Action: See the TCC Note on Comment 79-6 (Log #14). Submitter: Michael H. Appold, Delphi CorporationComment on Proposal No: 79-100Recommendation: Revise XX.3 as follows for clarity: XX.3* Motor Over t T emperature Protection. XX.3.1 Serve drive systems shall provide protecti on against motor over temperature conditions. Protection shall be provided by one of the following means: (1) Integral motor thermal protector (s) . (2) Serve drive controller (s) with load and speed sensitive overload protection and thermal memory detection upon shutdown or power loss. (3) Over temperature protection relay (s) utilizing thermal sensors embedded in the motor. (4) Motors with cooling systems. XX.3.2 Over temperature protection shall be in addition to any conductor protection. XX.3.3 Systems Motors that utilize external forced air or water motor cooling systems such as forced air or water, shall require motor over temperature protection in the event that cooling system is inoperative or has failed. XX.3.4 For multiple motor application, individual motor over temperature protection shall be provided. XX.3.5 The provisions of NFPA 70-2005, 430.343 and 430.44 for automatic restarting and orderly shutdown shall apply to the motor over temperature protection means. Substantiation: Clarification of existing wording. This comment is based on the reorganization of this section by a prior comment.Committee Meeting Action: Accept in Principle Committee Statement: See Comment 79-6 which meets the intent of the submitter.Number Eligible to Vote: 19Ballot Results: Affirmative: 13 Negative: 5 Ballot Not Returned: 1 GARSIDE

Explanation of Negative: CALLANAN: See my Explanation of Negative Vote on Comment 79-6. DROBNICK: I prefer to see the topic of Servo Drives/Motors in a “stand alone” chapter. I believe it will make it easier for the user of the standard to find information on this important topic without having to search through the entire publication. MUNSON: See my Explanation of Negative Vote on Comment 79-6. SANDERS: Reject this action. Not all changes are identified per Regulations Governing Committee Project Section 4-4.5(c). This comment does not provide additional clarify XX.3.1 as proposed is to specifically protect the motor. Changing the words so the “...drive systems shall provide protection...” merely adds words to accomplish the same thing. No justification is given by the commenter as to why XX.3.1(1) should require multiple thermal detectors as required per Regulations Governing Committee Project Section 4-4.5(d). The thermal hot spots are determined by engineering analysis and the most appropriate location is selected. It may or may not be necessary to have multiples and will add additional costs for no specified reason. XX.3.3 is part of the section addressing motor over temperature concerns. The comment will require cooling of a non-motor component and introduces new material that has not had public review, per Regulations Governing Committee Project Section 4-4.5(d). In the section XX.3.1 provided by this comment “Serve” is understood to be “Servo” for the context of this discussion. It is understood the reference given in the comment concerning XX.3.5 should be “430.43” and not “430.343.” SCHRECK: The committee comment refers back to comment 79-6 which would disperse the requirement into other sections of the standard to apply to induction motors. To include the requirements for servo controller interposed with commonly used induction motors, is to potentially cause confusion in our users, and the potential for improper application of protection devices.

________________________________________________________________79-67 Log #28 Final Action: Accept in Principle(Chapter 11) ________________________________________________________________TCC Action: See the TCC Note on Comment 79-6 (Log #14). Submitter: Michael H. Appold, Delphi CorporationComment on Proposal No: 79-100Recommendation: Revise XX.3 as follows: XX.3* Motor Over Temperature Protection. XX.3.1 Servo drive systems shall protect against motor over temperature conditions. Protection shall be provided by one of the following means: (1) Integral motor thermal protector(s). (2) Servo drive controller with load and speed sensitive overload protection and thermal memory detection upon shutdown or power loss. (3) Over temperature protection relay utilizing thermal sensors embedded in the motor. (4) Motors with cooling systems. XX.3.2 Over temperature protection shall be in addition to any conductor protection. XX.3.3 Systems that utilize motor cooling, such as forced air or water, shall provide protection against a failed or inoperable require motor over temperature protection in the event that cooling system is inoperative or has failed . XX.3.4 For multiple motor application, individual motor over temperature protection shall be provided. XX.3.5 The provisions of NFPA 70-2005, 430.343 and 430.44 for automatic restarting and orderly shutdown shall apply to the motor over temperature protection means. Substantiation: Striking (3): item 1 already requires protection based on something integral to the motor; I contend that is an ebbed sensor(s) so item (3) is redundant. Revising XX.3.3: Requiring over temperature protection in addition to the cooling system is an unnecessary redundancy for systems which can simply shut themselves down when the cooling system is Off. If detection of a failed or inoperable cooling system cannot be relied upon, and items (1) or (2) are always required, then the specification should eliminate XX.3.1(4) and XX.3.3 completely because a motor cooling system is considered to be able to accomplish nothing from a protection standpoint and should not even be talked about under XX.3. It then follows that the only acceptable means of protecting against motor over temperature would be items 1 or 2.Committee Meeting Action: Accept in Principle Committee Statement: See Comment 79-6 which meets the intent of the submitter.Number Eligible to Vote: 19Ballot Results: Affirmative: 13 Negative: 5 Ballot Not Returned: 1 GARSIDEExplanation of Negative: CALLANAN: See my Explanation of Negative Vote on Comment 79-6. DROBNICK: I prefer to see the topic of Servo Drives/Motors in a “stand alone” chapter. I believe it will make it easier for the user of the standard to find information on this important topic without having to search through the entire publication.

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Report on Comments F2005 — Copyright, NFPA NFPA 79 MUNSON: See my Explanation of Negative Vote on Comment 79-6. SANDERS: Reject this action. Not all changes are identified per Regulations Governing Committee Project Section 4-4.5(c). XX.3.1(1) concerns an integral motor thermal protector, and XX.3.1(3) allows for a relay thermal sensor assembly, which XX.3.1.(1) may not need, and instead interface directly with the servo controller. XX.3.3 substantiation is incorrect. A cooling system adiabatic condition needs to be separately monitored so appropriate controlling actions can be taken to insure an orderly shutdown. Such a cooling system may be part of another system that interfaces with the servo drive system as part of its overall duties. It is understood the reference given in the comment concerning XX.3.5 should be “430.43” and not “430.343.” SCHRECK: The committee comment refers back to comment 79-6 which would disperse the requirement into other sections of the standard to apply to induction motors. To include the requirements for servo controller interposed with commonly used induction motors, is to potentially cause confusion in our users, and the potential for improper application of protection devices.________________________________________________________________79-68 Log #10 Final Action: Reject(Chapter 11 (New)) ________________________________________________________________Submitter: John F. Bloodgood, JFB EnterprisesComment on Proposal No: 79-102Recommendation: See my comments on Proposal 79-96.Substantiation: See my comments on Proposal 79-96.Committee Meeting Action: Reject Committee Statement: The concerns of the submitter have been addressed by the action taken on Comment 79-6. This comment does not offer any recommendation or text. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-69 Log #93 Final Action: Reject(11.2.3) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 11.2.3 portion of the proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Reject Committee Statement: The language is clear and enforceable as written. No additional clarity would be gained by accepting the proposed wording in Proposal 79-1. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-70 Log #100 Final Action: Reject(12.1.2) ________________________________________________________________Submitter: Glen Kampa, Hoffman EnclosuresComment on Proposal No: 79-106Recommendation: Revise to read as follows: 12.1.2 Minimum control electrical enclosure construction shall comply with UL 508. UL 508A, UL50, or NEMA 250 for metallic and nonmetallic enclosures. [ROP 79-106] Log 82. Substantiation: All electrical enclosures on the machine need to comply with the minimum construction requirements of an electrical enclosure product standard to conform with metal thickness, type rating, fastening spacing, corrosion resistance and bonding provisions. This needs to include more than the control enclosure. This should also include pull, junction and cutout boxes and other panel enclosure which may not be considered the control enclosure.Committee Meeting Action: Reject Committee Statement: This requirement is overly restrictive. The committee notes that this requirement occurs in Chapter 12, Control Equipment, Location, Mounting and Enclosures and therefore the existing reference to “control” enclosure” is appropriate.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDEComment on Affirmative: GOETZ: A future proposal addressing construction requirements applicable to junction and pull boxes, and cutout boxes contained in UL50 and for metallic and non-metallic outlet boxes contained in UL514A and UL514C is more appropriately directed at clauses 14.5.7 Machine Compartments and Wireways, 14.5.8 Connection Boxes and Other Boxes, and/or 14.5.9 Motor Connection Boxes. HILBERT: I agree with the committee action and statement but support the submitter’s intent. I would encourage the submitter to consider proposing the addition of the words “connection and other boxes” to the text of 14.5.1.1 in the next revision cycle. This would appear to address the submitters concerns.

_______________________________________________________________79-71 Log #94 Final Action: Accept(12.2.1.1) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 12.2.1.1 portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-72 Log #79 Final Action: Accept(12.2.2.5) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 12.2.2.5 portion of the proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-73 Log #53 Final Action: Accept(12.4.11) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 12.4.11 portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-74 Log #54 Final Action: Accept(12.4.13) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 12.4.3 portion of the proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-75 Log #55 Final Action: Reject(12.4.13(1)) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the proposal in principle in part. Remove the words “as can be generated” from the end of item No 1. The new sentence would read “(1) Located within an enclosure that will withstand, without risk of fire or harmful effect, such temperatures.”Substantiation: As revised clarity will be added to the section and the revision is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Reject Committee Statement: The language is clear and enforceable as written. No additional clarity would be gained by accepting the proposed wording in this comment. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-76 Log #56 Final Action: Reject(12.4.13(3)) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 12.4.13(3) portion of the proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.

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Report on Comments F2005 — Copyright, NFPA NFPA 79 Committee Meeting Action: Reject Committee Statement: The language is clear and enforceable as written. No additional clarity would be gained by accepting the proposed wording in Proposal 79-1. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-77 Log #57 Final Action: Accept(13.1.1) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 13.1.1 portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-78 Log #22 Final Action: Accept(13.2.7 & A.13.2.7) ________________________________________________________________Submitter: Gary J. Locke, Lockheed Martin Systems IntegrationComment on Proposal No: 79-111Recommendation: Add new text to read as follows: 13.2.7* Appliance Wiring Material. Single conductor or multi-conductor Type AWM shall not be permitted. Exception: When part of a listed assembly suitable for the intended application Type AWM shall be permissible. A.13.2.7 Insulated conductors are often multiple marked identifying required characteristics (see 13.3.1) as well as AWM. Substantiation: Given the constraints associated with Type AWM as identified in the applicable product standard and supportive UL documentation - the original proposal should not be rejected. The proposal should have been accepted in principle and revised by the technical committee. The original proposal - revised as identified in this comment and offered for the committee’s consideration - constitutes identification of the permissible and impermissible application of Type AWM. Relative to the committee concern regarding the need for addition substantiation please consider the additional expository information contained herein. UL Standard 758 Appliance Wiring Material states: “1.2 The appliance wiring material covered by the requirements of this Standard are solely for use as factory-installed wiring either within the overall enclosure of appliances and other equipment (internal wiring) or as external interconnecting cable for appliances (external wiring), or for further processing as components in multi-conductor cables. “1.3 These requirements do not cover any wire, cable, or cord types that are presently covered in the National Electrical Code (NEC), NFPA 70, and are not intended for installation in buildings or structures in accordance with the NEC except within the scope of the installation instructions of the end-product for which their use is intended. “1.7 The final acceptance of AWM is dependent upon its use in complete equipment that conforms with the standards applicable to such equipment.” UL AVLV2. Guide Info Appliance Wiring Material - Component states: “The devices covered under this category are incomplete in certain constructional features or restricted in performance capabilities and are intended for use as components of complete equipment submitted for investigation rather than for direct separate installation in the field. “THE FINAL ACCEPTANCE OF THE COMPONENT IS DEPENDENT UPON ITS INSTALLATION AND USE IN COMPLETE EQUIPMENT SUBMITTED TO UNDERWRITERS LABORATORIES INC.” The UL Marking Guide Wire and Cable states: “In general, AWM is not evaluated for field installation unless it is included as a part of a complete, Listed product or system. For example, data processing equipment Listed under the Information Technology Equipment Including Electrical Business Equipment (NWGQ) category will use external interconnect cables, such as AWM Style 2464, only if the AWM has been evaluated and described in the Listing for the particular piece of equipment. The limitations on the installation of the Listed end-use product or system also apply to the wiring.” www.ul.com/wire/faq.html General Wire & Cable FAQs states: “1 - What is the relationship between the UL Standards for Wire and Cable and the National Electrical Code? The large majority of UL’s wire and cable Standards are intended to be compatible with the installation requirements of the National Electrical Code (NEC). Some expectations are Boat Cable, Marine Shipboard Cable, and Appliance Wiring Material.” The direct application of Type AWM as part of the electrical equipment of industrial machinery built to comply with NFPA 79 is inconsistent with the intent of UL as evidenced by the text amply published by UL on the subject. The electrical equipment of industrial machinery cannot be listed to NFPA 79 because NFPA 79 is not a product standard. AS such NFPA 79 is not a standard

to which AWM can directly conform. The direct application of Type AWM on industrial machinery built to comply with NFPA 79 is therefore unsafe. Relative to the committee concern regarding material with multiple markings the addition of a note (i.e.; A.13.2.7) provides explanatory material mitigating such confusion. The proposal text revised as identified in this comment is consistent with the submitter’s intent, addresses the concerns of the technical committee, and improves the conditions for safety by appraising the NFPA user community of the constraints associated with Type AWM. Should the text offered in this comment be insufficient in any capacity the committee would serve the NFPA 79 user community well by using it as a baseline for further acceptable revision.Committee Meeting Action: Accept Committee Statement: The committee understands that the proper placement of this material should be as a new Section 13.2.7.3.Number Eligible to Vote: 19Ballot Results: Affirmative: 17 Negative: 1 Ballot Not Returned: 1 GARSIDEExplanation of Negative: FISHER: It should be noted that the referenced proposal noted in the ROC should be 79-112 rather than 79-111.This comment should be rejected in that it fails to address the original committee’s statement for rejecting proposal 79-112; “there are permitted multiple marked materials that include the Type AWM and their permitted use may be mistakenly prohibited by the proposed text”. The comment does not introduce any normative text that specifically addresses this issue, but rather only contains comments in an Annex. This issue could have been dealt with by an exception, but it was not. The added exception as limited to parts of listed assemblies is unrealistic in terms of present usage. When the substantiation is distilled, the criticism of the use ofAWM cable “recognized for use with” seems to be just that it is recognized and not listed. By that same logic there are multitudes of recognized components ranging from disconnects switches to terminal blocks which are commonly used in machine control that should not be permitted. This does not seem to be an adequate reason for denial of use. Further, there are cases where the appropriate marking would be “identified for use”. The requirement as written would seem to prevent the legitimate use of AWM cable for specialty use, for example, cable with dielectric properties for use in high frequency applications, that is identified for use but is not itself part of a listed product. Servo systems commonly use such specialty cables for connection between components. These cables can be provided on rolls for connection during machine installation.

________________________________________________________________79-78a Log #CC1 Final Action: Accept(13.8.1) ________________________________________________________________Submitter: Technical Committee on Electrical Equipment of Industrial Machinery Comment on Proposal No: 79-115Recommendation: In addition to accepted proposal text, add exception text under 13.8.1 as follows: Exception: Other cord types shall be permitted where part of a listed assembly or otherwise identified as suitable for the intended application.Substantiation: Section 13.6 allows use of cord or multi-jacketed cable consisting of small conductors for connecting to sensors, plc I/O, and other control circuit devices. Standard listed cord types are not defined for smaller conductor sizes. NFPA 70 Section 400.4 allows use of other cord types not listed in Table 400.4 where subject to special investigation. The use of “identified” in the proposed text would allow for investigation for intended use in addition to use of suitable listed products containing other cord types as a component.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 17 Negative: 1 Ballot Not Returned: 1 GARSIDEExplanation of Negative: HILBERT: I agree with the language in the exception that recognizes the use of “other cords that are part of a listed assembly.” However, I have concerns with the proper understanding of the term “identified” in the remainder of the proposed text and therefore do not support the addition of this exception. The term “identified” would likely require evaluation for the specific application, based on the requirements of a specific code or standard, by a recognized third party testing agency and this is not clear in the text of the exception._______________________________________________________________79-79 Log #19 Final Action: Accept in Principle(14.2.3.1) ________________________________________________________________Submitter: Mike Steele, R.A. JonesComment on Proposal No: 79-121Recommendation: Add new text as follows:Exception No. 1: It shall be permitted to use conductors of other colors provided the insulation or cover is appropriately identified at all points of access.

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Report on Comments F2005 — Copyright, NFPA NFPA 79 Substantiation: Cable Manufacturers typically only offer cable with specific color requirements for a premium cost, if they offer it at all.Committee Meeting Action: Accept in Principle Add new text as follows: Exception: Grounded conductors in multiconductor cables shall be permitted to be permanently identified at their terminations at the time of installation by a distinctive white marking or other equally effective means.Committee Statement: The committee revised the submitters wording to align the text currently used in Section 200.6(E) of the National Electrical Code, Exception No. 1 and adds consistency and clarity to the application. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-80 Log #46 Final Action: Accept(14.2.4.3(1)) ________________________________________________________________Submitter: John H. Keinath, General MotorsComment on Proposal No: 79-128Recommendation: This section should read as follows: (1) BLACK for ungrounded ac and dc power conductors.Substantiation: There is a discrepancy between the committee action and the ROP Draft. The original committee action text should be used. The ROP Draft reads as follows: “(1) BLACK for ungrounded ac and dc power line, load, and control conductors at line voltage ” The committee action reads as follows: “(1) BLACK for ungrounded ac and dc power line , load, and control conductors at line voltage ”. Committee Meeting Action: Accept The committee action is to clarify that 14.2.4.3.(1) is to read as follows: (1) BLACK for ungrounded ac and dc power conductors.Committee Statement: This action corrects an error in the ROP draft.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-81 Log #29 Final Action: Accept(14.4.5.1) ________________________________________________________________Submitter: Michael H. Appold, Delphi CorporationComment on Proposal No: 79-129Recommendation: Revise 14.4.5.1 Where equipment... With power on the system, there shall be no voltage shock hazard present on the exposed male pins of any connector. either part of an unplugged attachment plug and receptacle (plug/socket) combination. Substantiation: First revision: Shock hazard is the proper term consistent throughout this document and revision clarifies that the use of exposed male pins within PELV circuits is still allowed. Second revision: Clarifies that the initial proposal intended to address exposed male pins on both half’s of the plug and socket combination, where the term “connector” may have been misunderstood to be just the “plug”.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-82 Log #47 Final Action: Accept in Principle(14.4.5.1) ________________________________________________________________Submitter: John H. Keinath, General MotorsComment on Proposal No: 79-129Recommendation: This section should read as follows: Where equipment is removable, connections to it through a polarized attachment plug and receptacle (plug/socket) combination shall be permitted. With power on the system, no shock hazard shall exist from there shall be no voltage present on the exposed male pins of any connector. Substantiation: I believe the goal of the text in proposal 79-129 is to prevent shock hazards on exposed male pins of a connector. However, as it is written it makes no reference the use of PELV to prevent shock hazards. Furthermore, this text does not clearly indicate what the voltage is referenced to. For example, is the voltage measured to ground or some other reference point?Committee Meeting Action: Accept in Principle Committee Statement: See the action on Comment 79-81, which addresses the concerns of the submitter.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE

________________________________________________________________79-83 Log #30 Final Action: Accept(14.4.6) ________________________________________________________________Submitter: Michael H. Appold, Delphi CorporationComment on Proposal No: 79-130Recommendation: Revise 14.4.6 Where it is... With power on the system, there shall be no voltage shock hazard present on the exposed male pins of any unplugged connector. either part of an unplugged attachment plug and receptacle (plug/socket) combination. Substantiation: First revision: Shock hazard is the proper term consistent throughout this document and revision clarifies that the use of exposed male pins within PELV circuits is still allowed. Second revision: Clarifies that the initial proposal intended to address exposed male pins on both half’s of the plug and socket combination, where the term “connector” may have been misunderstood to be just the “plug”.Committee Meeting Action: Accept Committee Statement: The committee understands that this section number if from the ROP draft.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-84 Log #48 Final Action: Accept in Principle(14.4.6) ________________________________________________________________Submitter: John H. Keinath, General MotorsComment on Proposal No: 79-130Recommendation: This section should read as follows: Where it is necessary that wiring be disconnected for shipment and where practicable, terminals or attachment plug and receptacle (plug/socket) combinations shall be provided at the sectional points. Such terminals shall be suitably enclosed and attachment plug and receptacle (plug/socket) combinations shall be protected from the physical environment during transportation and storage. Raceway and enclosure openings shall be sealed prior to shipment. With power on the system, no shock hazard shall exist from there shall be no voltage present on the exposed male pins of any unplugged connector. Substantiation: I believe the goal of the text in proposal 79-130 is to prevent shock hazards on exposed male pins of a connector. However, as it is written it makes no reference to the use of PELV to prevent shock hazards. Furthermore, this text does not clearly indicate what the voltage is referenced to. For example, is the voltage measured to ground or some other reference point?Committee Meeting Action: Accept in Principle Committee Statement: See the action on comment 79-83 which meets the intent of the submitter. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-85 Log #58 Final Action: Accept(14.5.1.2) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject. the 14.5.1.2 portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-86 Log #59 Final Action: Accept(15.4.1) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 15.4.1 portion of the proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE

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Report on Comments F2005 — Copyright, NFPA NFPA 79 ________________________________________________________________79-87 Log #60 Final Action: Accept(15.7) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 15.7 portion of the proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-88 Log #101 Final Action: Hold(16.1.1) ________________________________________________________________Submitter: Glen Kampa, Hoffman EnclosuresComment on Proposal No: 79-135Recommendation: Within 16.1.1 Receptacles for Accessory Equipment, replace 120 volt with 250 volt throughout 16.1.1. Remove parallel blade.Substantiation: This is an effort to globalize and harmonize with IEC, not restrict to a 120 volt receptacle where nominal 230 volt devices are used. There are currently manufacturers of accessory 250 volt receptacle that routinely are used without incident.Committee Meeting Action: Hold Committee Statement: This section introduces a comment and concept that has not had adequate public review in accordance with the regulations governing Committee Projects Section 4-4.6.2.2(a). Hold the comment only.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDEComment on Affirmative: KIIHR: While I am voting affirmative on the Committee’s action to place this item on Hold, I would like to take this opportunity to request that the Committee seriously address this issue during the next cycle. As the submitter indicated, accessory equipment is not limited to 120 volts. In fact, I would suggest going beyond the comment by Mr. Kampa, and allowing for the use of not only 250 volt accessories, but also those that operate at 480 volts. There are many cases of this type of equipment in industry. For example, it is not uncommon to have a 480 volt conveyor, which is used as part of the manufacturing process, plugged into an auxiliary outlet of the main piece of equipment. This issue needs to be addressed so that we can provide a safe way for users to implement this type of system.

________________________________________________________________79-89 Log #31 Final Action: Reject(16.1.1(7)) ________________________________________________________________Submitter: Michael H. Appold, Delphi CorporationComment on Proposal No: 79-135Recommendation: Delete (7) Receptacles mounted external o the enclosure shall be Ground-fault Circuit Interrupter protected. Substantiation: GFCI on receptacles for maintenance personnel is already covered by 16.1.2. Other receptacles are for accessory equipment, and when mounted external to the enclosure are subject to the same environment and use as receptacles provided as part of the facility. The NEC requirements for GFCI is location and environment specific. NFPA should not override the NEC on this issue.Committee Meeting Action: Reject Committee Statement: This text is necessary so that GFCI protection is required regardless of the intended use. Often times the intended use is unknown.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-90 Log #102 Final Action: Reject(16.2.2.1 and 16.2.2.2) ________________________________________________________________Submitter: Glen Kampa, Hoffman EnclosuresComment on Proposal No: 79-136Recommendation: Add provisions to allow higher voltages for lightening in control enclosures; revise 16.2.2.1 and 16.2.2.2(3) with the following exception: Exception: Circuit voltage greater than 150 volts not exceeding 277 volts is acceptable if a label is located clearly identifying the lightning voltage in addition to a warning if not powered off by the machine disconnect.Substantiation: 277 volt facility lighting circuits are used frequently for the attribute of efficiency and fewer circuits. It often makes sense for the machine lighting to be controlled by facility circuit. Using appropriate practices, 277 volt facility lighting circuits are routinely maintained. The label clearly informs

the qualified person of the voltage. We sell a high volume of 230 volt lighting fixtures designed for inside the enclosure that are UL listed for industrial control panels without ever hearing of an incident.Committee Meeting Action: Reject Committee Statement: A comment would provide for increased voltages in control enclosures that could result in increased risk of shock and electrocution of personnel. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDEComment on Affirmative: GOETZ: The warning marking suggested by this comment is already a required marking for excepted circuits in 5.3.5.4. Both the original proposal and the comment would increase the maximum allowable lighting circuit voltage without specifying or limiting the type(s) of lighting fixtures that could be connected to the higher voltage, specify or limit the sources covered in 16.2.2.2 from which the higher voltage would be sourced, limit the maximum voltage to ground for such circuits, or restrict the installation of such fixtures to be only within control enclosures.

________________________________________________________________79-91 Log #6 Final Action: Hold(16.2.2.2) ________________________________________________________________Submitter: Drake A. Drobnick, Visteon CorpComment on Proposal No: 79-136Recommendation: Add additional text to (4) as follows: (4) An isolating transformer connected to the line side of the supply disconnecting device when a separate primary disconnecting means and secondary overcurrent protection are provided and mounted either externally or within the control enclosure adjacent to the supply disconnecting device. Substantiation: Enclosed isolation transformer devices are commonly used to provide lighting circuits that remain energized when the main disconnect is in the off position. The current language prohibits this type of application.Committee Meeting Action: Hold Committee Statement: The underlined text within the comment is new material that has not had public review in accordance with the regulations governing Committee Projects Section 4-4.6.2.2(a). Hold the comment only.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-92 Log #44 Final Action: Accept(17.4.1) ________________________________________________________________Submitter: Max Painter, Cryovac Division, Sealed Air CorporationComment on Proposal No: 79-138Recommendation: This comment concerns the location of the machine nameplate, as specified in clause 17.4.1. Current proposal says “...plainly visible after the equipment is installed.” Also, “...shall be attached to the enclosure.” We would like to have the location clarified: does the current phrasing allow the nameplate to be mounted inside the door of the enclosure (visible after the control equipment and wiring have been installed), or must it be mounted on the outside? If the intent is visibility from the outside, we would like to recommend the following phrasing: “ Control equipment shall be legibly and durably marked in a way that is plainly visible after the equipment is installed. A nameplate giving the following information shall be attached to the outside of the enclosure, or on the machine immediately adjacent to the enclosure: ”. Substantiation: The Food Industry has begun to require Sanitary Design on the equipment being installed in their production facilities. The effort is a pro-active initiative, dated October 2001, by the members of the American Meat Institute (AMI), and is intended to help reduce the instances of Listeria monocytogeries in ready-to-eat (RTE) foods. The emphasis on the equipment design process is the elimination of any cracks, crevices, or other sites where Listeria and other pathogens could harbor and grow. Cleaning procedures alone do not guarantee that the pathogens have been destroyed to an acceptable level, when they are allowed to harbor in these areas. There can be no areas where product, water, or product liquid are allowed to accumulate, pool, or condense. Many other areas of the equipment are also affected, but Nameplates in particular are addressed as follows: “Nameplates and tags are minimized. When attached, plates and tags are continuously welded. Rivets or screw attached plates (often sealed with caulk) are absent.” Welding on the door of an enclosure almost invariably results in severe warping of the door. On finished machines, the enclosures are often mounted so that the enclosure is recessed within the machine framework and the door is flush with the machine frame, so mounting the nameplate on the side of the enclosure is often not an option. We are proposing that a nameplate be allowed to be attached adjacent to the enclosure. Note: the 1997 version of NFPA 79 also allowed mounting “on the machine” as well as “attached to the enclosure” (Section 4.7.1). Why was the option of mounting “on the machine” removed in the 2002 edition?

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Report on Comments F2005 — Copyright, NFPA NFPA 79 This is not original material; its reference/source is as follows: The source of the substantiation is the American Meat Institute Initiative for Sanitary Design, dated October 2001. Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-93 Log #61 Final Action: Accept(17.4.2) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject. the 17.4.2 portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-94 Log #62 Final Action: Accept(17.5.2) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 17.5.2 portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-95 Log #63 Final Action: Accept(18.7.5.2) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Continue to reject the 18.7.5.2 portion of the proposal.Substantiation: The Committee should continue to reject this proposal as the requirement as written is enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-96 Log #52 Final Action: Accept(18.8.2) ________________________________________________________________Submitter: Mark R. Hilbert, State of New Hampshire / Rep. IAEIComment on Proposal No: 79-1Recommendation: Accept the 18.8.2 portion of the proposal.Substantiation: As recommended, the proposal adds clarity to the section and is in line with 2.2.2.3 of the Manual of Style for NFPA Technical Committee Documents regarding the removal of possible unenforceable or vague terms.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-97 Log #36 Final Action: Reject(A.3.3.26 Device) ________________________________________________________________Submitter: William Anderson, The Procter & Gamble CompanyComment on Proposal No: 79-17Recommendation: Recommendation:In order to correct the accepted committee action on the proposal; add the comment to definition 3.3.26* Device: A.3.3.26 The definition of device does not necessarily exclude control devices that use electrical energy to accomplish their control function, such as electromechanical devices, solid state control devices and operator indicating devices. Substantiation: Because the definition can logically, in some cases of its use, result in an alternate and unintended understanding in the terms usage in the main text, the clarifying note is required per Manual of Style, 2003; 2.2.2.1 and permitted by Manual of Style, 2003; 2.3.2.5. Comment:Using the adoption of preferred definitions, in some cases, had unintended consequences. In this proposal and 79-17 (Log #CP2) (3.3.26 Device) has the logical consequence of interpreting the definition to exclude some control devices that use electrical energy in their control function and because of this consequence required explanatory text to correct the situation. The term device is used in the following definition: 3.3.4* Adjustable Speed Drives, 3.3.15* Color Graphic Interface Device, 3.3.22 Control Device, 3.3.24 Controller,

3.3.34 Electromechanical, 3.3.22 Control Device, 3.3.24 Controller, 3.3.85 Safeguard, 3.3.9X* Servo Drive System, and in Chapter 10 Operator Interface and Control Devices. Committee Meeting Action: Reject Committee Statement: The committee disagrees that the proposed note is necessary to correct the action of 79-17. The definition of device is as it appears in the NEC. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-98 Log #39 Final Action: Accept in Principle(A.4.1) ________________________________________________________________Submitter: William Anderson, The Procter & Gamble CompanyComment on Proposal No: 79-149Recommendation: Reconsider the rejection of the addition to note 4.1 regarding “arc flash” and “arc blast” risk that is addressed in flash hazard analysis proposal. Add the original proposed text to A.4.1: Flash hazard analysis, calculation methods and ways to mitigate the hazard, are found in NFPA 70E, Standard for Electrical Safety Requirements for Employee Workplaces. Flash-hazard quantification includes factors relating to the amount of power available and the time interval to remove the power to the arc fault location. To limit the flash-hazard in an industrial machine there are some basic choices, one choice is to use a fault protection device, such as a circuit breaker or fuse to open during the arc fault quickly enough to limit the total power available to the arc (flash); and to do that, the one must have some assurance there is a level of fault current available to open the protective device quickly enough to limit the total power to the potential arc fault location. The alternative choice would be to use a suitable sized isolation transformer to limit the available power to the industrial machine and subsequently to the potential arc fault location. Regardless of the method to control the hazard, the flash hazard is one of the factors of the general operating condition that is required to be understood and controlled in order to remove or limit the risk to a tolerable level.Substantiation: The committee mistakenly rejected this proposal as containing requirements for flash hazards analysis, it is only proposing a note intended to help and possibly generate standard equipment solutions and requirements for industrial machines for future inclusion in NFPA 79, it is not intended to contain requirements (Manual of Stytle 2003 subsection 3.8.2), and is complete as a note. It is agreed that the requirements for a flash hazard analysis and application calculation methods are contained in NFPA 70E. And it is also agreed that Flash-hazard is a recognized hazard [NFPA 70E: 2004 edition and NFPA 70: 2005 edition]. However, the implementation of electrical equipment of industrial machinery design to address the hazard as identified by those calculations is within the scope of this standard [NFPA 79: 2002, 1.2 Purpose. This standard shall provide detailed information for the application of electrical/electronic equipment, apparatus, or systems supplied as part of industrial machines that will promote safety to life and property.] NFPA 70E addresses electrical safety-related work practices for the electrical hazards. As an example, NFPA 70E deals with work practices to avoid electrical shock, while mitigating that hazard in equipment design requirements is well covered in NFPA 79. The quantification of the magnitude of potential of a flash hazard is covered in NFPA 70E and possible ways the worker can increase his or her protection from that potential harm. Providing the equipment that reduces that potential hazard, is certainly a new area where NFPA 79 needs to develop specific requirements for the electrical equipment of industrial machines. This proposed note is a first step to alert designers of the need for and offers possible methodologies that might be taken to accomplish the reduction of potential flash hazards. The intent of the note is to encourage the development of standardized solutions for the electrical equipment for industrial machinery which will reduce the potential for flash hazards. I believe it is important and that this note be included in the next edition of NFPA 79.Committee Meeting Action: Accept in Principle Committee Statement: See Committee Action on Comment 79-99 which meets the intent of the submitter.Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-99 Log #32 Final Action: Accept in Principle(A.4.1, A.4.1(1)) ________________________________________________________________Submitter: Michael H. Appold, Delphi CorporationComment on Proposal No: 79-149Recommendation: Modify A.4.1 as follows: “...of electrical shock , flash hazard, or electrical fire.” Also add a paragraph to the end of A.4.1 as follows: Flash hazard analysis, calculation methods and ways to mitigate the hazard, are found in NFPA 70E, Standard for Electrical Safety in the Workplace. Substantiation: The substantiation for ROP 79-149 Log #141 still stands,

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Report on Comments F2005 — Copyright, NFPA NFPA 79 “Flash hazard is a recognized hazard [NFPA 70E and NFPA 70:2005 edition] that needs to be at least mentioned in this electric standard for industrial equipment.” and the TCC did not reject that issue at ROP. They rejected “requirements” being stated in Annex A, and restatement of limited parts of NFPA 70E. This comment only points to NFPA 70E in a style consistent with A.3.3.78 and A.6.2.3.1.1.Committee Meeting Action: Accept in Principle Change the word “mitigate” to “address”Committee Statement: The committee action is to clarify that flash hazard analysis required by NFPA 70E can only address the hazard but not mitigate the hazard.

Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-100 Log #33 Final Action: Accept(A.4.2) ________________________________________________________________Submitter: Michael H. Appold, Delphi CorporationComment on Proposal No: 79-150Recommendation: Drop “per 1.3.2 . Substantiation: The quote mark is out of place. Pointing to 1.3.2 (which exempts portable tools and dwelling units from NFPA 79) does nothing to clarify the SEMI industry requirements any different than any other industry and confuses the annex item.Committee Meeting Action: Accept Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE________________________________________________________________79-101 Log #20 Final Action: Accept in Principle(D.1(q)) ________________________________________________________________Submitter: Gary J. Locke, Lockheed Martin Systems IntegrationComment on Proposal No: 79-161Recommendation:

ANSI IEEE315/315A SymbolANSI Code NFPA79 Annex EDevice and ComponentDesignation

IEC 60617Symbol IECCode 60346Reference Designation

Description

CON KM* Contactor, normally open contact openCON KM* Contactor, normally closed contact closedCR KA Relay, normally open contact openCR KA Relay, normally closed contact closedTR KT* Timer relay, normally open Timed contact, N.O. – on delay (TDE)TR KT* Timer relay, normally closed Timed contact, N.C. – on delay (TDE)TR KT* Timer relay, normally open Timed contact, N.O. – off delay (TDD)TR KT* Timer relay, normally closed Timed contact, N.C. – off delay (TDD)SS SA Selector SwitchPB SB* Pushbutton, normally open contact N.O.PB SB* Pushbutton, normally closed N.C.PB SB* Pushbutton, normally closed – mushroom headFLS SL* Liquid Level Float switchFLS SF* Flow switchPS SP* Pressure switchTAS ST* Temperature-actuated switchLS SQ Limit switchPRS SQ Proximity switchLT HL* Pilot Indicating lightPL HS Plug and socketCR KA Control relay coilCON KM* Contactor coilM KM* Motor starter coilTR KA Timer coil relaySOL YV** Solenoid coilCTR EC* Electromechanical CounterCB QF** Circuit breakerT1B X1* Terminals (reference) blockFU XT Fused terminals (reference)

FU* Fuse, protective

79-60

Report on Comments F2005 — Copyright, NFPA NFPA 79 Figure D.1(q) Selections from ANSI Y32.2/IEEE 315/315A Symbol Table Sample Symbols and Designations *An additional character may be used as a suffix to the identified character. The additional character is ascertained per IEC 60346 relative to a specific application.**An additional character may be used as a prefix to the identified character. The additional character is ascertained per IEC 60346 relative to a specific application. Substantiation: It appears that there may have been an administrative transportation error with proposal 79-161 (Log #92) as submitted. Figure D.1(q) was represented in Section 4 of the proposal, not Section 3 as submitted. It also appears that the content of the table columns were moved out of relative position. Relative to the committee statement regarding submitter intent please consider the following expository information: The headings and title of Figure D.1(q) are misleading or incorrect. “ANSI Symbol” and “ANSI Code” are inappropriate, unidentifiable, technically misleading, nonspecific terminology’s as it relates to Figure D.1(q). The text “IEEE 315/315A Symbol” and “NFPA 79 Annex E Device and Component Designation” are appropriate, identifiable and technically correct terminology’s - respectively. “IEC 617” is technically incorrect. “IEC 60617” is technically correct. “IEC Code” is also unidentifiable, nonspecific terminology. “IEC 60346 Reference Designation” is identifiable, specific and technically correct. “Selections from ANSI Y32.2/IEEE 315A. “IEEE 315/315A Symbol Table” is incomplete and technically misleading. ANSI has abandoned ANSI Y32.2 IEEE 315/315A. “IEEE 315/315A Symbol Table” does not exist as such. The proposed title “Figure D.1(q) Sample Symbols and Designations” is generically appropriate, and not redundant with the proposed headings. “FL”, “TS” and “T1” are revised as “FLS”, “TAS”, and “TB” respectively so that Figure D.1(q) reflects the Designations as found in Table E.1 Device and Component Designation. The IEC 60346 Reference Designations are revised to reflect only those characters that can be ascertained generically. Most two-character designations cannot be so ascertained, but were included in Figure D.1(q) because they were included in the associated Figure in SAE HS-1738 which was used as the model verbatim. The SAE reference designations as depicted may have reflected the characters used in some automotive environments, but may not be reflective of manufacturing in general - and as such may prove misleading. The notes to Figure D.1(q) identify how a user may identify an additional character. The text “XT” is removed from the IEC 60346 Reference Designations column as it is redundant with “X*”. All of the Descriptions are revised as shown to reflect the same Device identification or descriptions found in Table E.1 Device and Component Designation. These Descriptions are revised to enhance the application of crisp, consistent terminology throughout the standard thereby enhancing user utility. Retention of inappropriate, unidentifiable, technically misleading, nonspecific information in Figure D.1(q) is inappropriate. This proposal corrects discrepancies and inaccuracy in material that is intended to be expository it should not be reject, but rather accepted. If there is anything technically incorrect in this proposal it is unbeknown at this time - but identification of any such error might warrant an acceptance in principle of this proposal with the correction of the applicable text. Also, please note that the symbols have been omitted from the Figure D.1(q) for convenience in this comment. It is not the objective of this comment to seek removal of the symbols. It is expected that the symbols would remain as they are.Committee Meeting Action: Accept in Principle Change the reference in two occurrences in the text and in one occurrence in the Table from IEC 60346 to IEC 61346-2. The symbology as it appears in the NFPA 79 2002 Figure D.1(q) are intended to be included in the revised table. Committee Statement: The committee understands that there should be no changes to the table other than in the reference. Number Eligible to Vote: 19Ballot Results: Affirmative: 18 Ballot Not Returned: 1 GARSIDE

August 2005

FORM FOR FILING NOTICE OF INTENT TO MAKE A MOTION (NITMAM)

AT AN ASSOCIATION TECHNICAL MEETING 2005 FALL REVISION CYCLE

FINAL DATE FOR RECEIPT OF NITMAM: 5:00 pm EST, November 10, 2005

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Street Address_________________________________City________________________State______Zip _________________ 1. a) NFPA Document (include Number and Title)___________________________________ b) Proposal or Comment Number____________________ c) Section/Paragraph _____________________________________

2. Motion to be made. Please check one: (See also 4.6 of the Regulations Governing Committee Projects) (a) Proposal (1) Accept. (2) Accept an Identifiable Part. * _ (3) Accept as Modified by the TC. (4) Accept an Identifiable Part as modified by TC.* (b) Comment (1) Accept. (2) Accept an Identifiable Part. * (3) Accept as Modified by the TC. (4) Accept an Identifiable Part as modified by TC.* __ (5) Reject (6) Reject an Identifiable Part.* (c) Return Technical Committee Report for Further Study _____ (1) Return entire Report. (2) Return a portion of a Report in a form of a proposal and related comment (s). _____ (3) Return a portion of a Report in the form of identifiable part(s) of a proposal and related comments (s). (Identify the specific portion of the proposal and the related comments below)* * Clearly identify the Identifiable Part(s) indicated above (use separate sheet if required).

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3. I am entitled to make this motion in accordance with 4.6.8 of the Regulations Governing Committee Projects, as follows: (check a, b, or c). a)____ This motion may be made by the original submitter or their designated representative, and I am the (if you check (a) indicate

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c)____This motion may be made by anyone.

(Form continued on next page) (-1-)

NITMAM form (continued)

August 2005

4. Comments or Clarification (optional): This NITMAM will be reviewed by a Motions Committee. In addition to determining whether your Amending Motion is proper, the Committee may take other actions as described in 2.3 of the Technical Meeting Convention Rules as follows:

Restating and Grouping of Motions. Upon request or on its own initiative, and in consultation with the mover(s), the Motions Committee may: (a) restate an Amending Motion to facilitate the making of a proper motion or to clarify the intent of the mover; and (b) group Amending Motions which are dependent on one another into a single Amending Motion. Dependent motions are motions that the mover(s) wish to be considered by the assembly and voted on as single up or down package. In addition to the foregoing, the Motions Committee may take such other actions or make such other recommendations as will facilitate the fair and efficient consideration of amending.

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Signature (Required)_____________________________________________________________________ (Note: This NITMAM will be reviewed, and if proper, your Amending Motion will be certified in accordance with the Technical Meeting Convention Rules and posted on the NFPA website by December 9, 2005. Documents that have Certified Amending Motions will be considered at the June 2006 Annual Meeting Technical Committee Report. In order to have your Certified Amending Motion considered at that meeting you must appear, sign in, and make the motion as prescribed in the Convention Rules).

PLEASE USE SEPARATE NITMAM FORM FOR EACH AMENDING MOTION YOU WISH TO MAKE,

Mail to: Secretary, Standards Council, National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02169-7471 NFPA Fax: (617) 770-3500

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August 2005

Extract from the Regulations Governing Committee Projects 4-5 Notice of Intent to Make a Motion.

4-5.1 Requirement of a Notice of Intent to Make a Motion.

In order to make any amending motion permitted by 4-6.5, at a Technical Committee Report session, the intending maker of a motion must file a Notice of Intent to Make a Motion in accordance with this section, and comply with the sign-in requirement for certified motions prior to the technical session in accordance with 2.7 of the Convention Rules.

4-5.2 Filing of Notice.

The Notice shall be filed with the Council Secretary by the deadline established in accordance with 4-2.1. Any Notice of Intent to Make a Motion received after the filing date shall be returned to the submitter, unless the Motions Committee determines, in its discretion, that it can reasonably consider and act on the Notice in advance of the timely publication of the final Motions Committee Report and Updated Association Meeting Agenda (see 4-5.7, and 2.5 of the Convention Rules). A submitter, by written request to the Council Secretary, may withdraw the Notice of Intent to Make a Motion before the established deadline. Thereafter, the Notice of Intent to Make a Motion cannot be withdrawn without the approval of the Motions Committee.

4-5.3 Who May Submit the Notice.

The Notice may be filed by anyone who meets the requirements of 4.6.8 for making the motion that is the subject of the Notice.

4-5.4 Content of the Notice.

Each Notice shall include a precise description of the motion to be made in accordance with 4.6.6, and shall identify the maker of the motion and provide such evidence as may be necessary to establish that the person so identified has properly met the requirements of 4-6.8.

4-5.5 Association Technical Meeting Consideration of Motions.

When a Technical Committee report on a document receives at least one notice of intent to make a motion that is certified in accordance with the Technical Meeting Convention Rules, it shall be presented for membership action at an Association Technical Meeting in accordance with 4-6 and the Convention Rules (including the sign-in requirements of 2.7 of the Convention Rules).

4-5.6 No Notice of Intent to Make a Motion Received.

Where no notice of intent to make a motion is received and certified in accordance with the Technical Meeting Convention Rules, the document shall be forwarded directly to the Standards Council for action in accordance with 4-8.

4-5.7 Publication of Updated Association Meeting Agenda.

Following the established deadline for the filing of a Notice of Intent to Make a Motion and any necessary review and action by the Motions Committee, the Agenda of the Association Meeting shall be updated to remove any Technical Committee Reports that, by reason of no proper Notice of Intent to Make a Motion having been filed, will not be presented to the Association Meeting. The updated Agenda shall be published on the NFPA website and, as time permits, in NFPA News, and other appropriate media.