working draft of committee meeting output standard for industrial premises; ansi/tia-1179-2010;...

WORKING DRAFT OF COMMITTEE MEETING OUTPUT

CONTENT NOT FINAL –SUBJECT TO REVISION PRIOR TO LETTER BALLOT AND PUBLICATION OF

FIRST DRAFT REPORT

Document: NFPA 70

Revision Cycle: A2016

Meeting Dates: November, 2015

Committee Activity: Comment Stage

Attached please find a record of the Second Revisions generated at the Technical Committee’s Second Draft Meeting.

This Preliminary Report is being provided to committee members for the purpose of facilitating early review, particularly for those Committee members who must obtain input from their respective organizations in preparation for the Letter Ballot.

Second Revision No. 4503-NFPA 70-2015 [ Global Comment ]

SEE ATTACHED FILE FOR REWRITE OF INFORMATIONAL NOTE NO 1.

THIS INFORMATIONAL NOTE NO.1 IS REPLACING EXISTING INFORMATIONAL NOTE NO. 1 IN THEFOLLOWING SECTIONS:

800.24

820.24

830.24

Supplemental Information

File Name Description

Attachement_file_for_SR_4503.doc attach file for rewrite Info Note SR4503

Submitter Information Verification

Submitter Full Name: Chris Coache

Organization: [ Not Specified ]

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Submittal Date: Mon Nov 02 14:34:43 EST 2015

Committee Statement

CommitteeStatement:

Telecommunications Industry Association (TIA) in its revision process corrected an error in theirnumbering scheme. Hence the two new parts are ANSI/TIA-568.0-D (generic) and ANSI/TIA-568.1-D (commercial buildings). Current editions of the documents are also provided. Additional TIAstandards are added for completeness. The ANSI designation for TIA standards is retained as thesestandards utilize the ANSI standards development process and should be so designated.

ResponseMessage:

Public Comment No. 192-NFPA 70-2015 [Section No. 800.24]



Public Comment No. 196-NFPA 70-2015 [Global Input]

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

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WORKING DRAFT OF COMMITTEE MEETING OUTPUT – NATIONAL ELECTRICAL CODE® NFPA 70, Code Making Panel 16, November, 2015; SUBJECT TO REVISION - NOT FOR PUBLICATION

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Global CMP 16 Proposed Resolution of Public Comments

New Info Note No. 1 800, 820, 830.24

Informational Note No. 1: Accepted industry practices are described in ANSI/NECA/BICSI 568-2006, Standard for Installing Commercial Building Telecommunications Cabling; ANSI/ TIA/ -568-C.1-2009 2012 — Commercial Building Telecommunications Cabling Standard; ANSI/ TIA-569-C D -2012 2015, Telecommunications Pathways and Spaces; ANSI/TIA-568.1-D-2015, Commercial Building Telecommunications Infrastructure Standard; ANSI/TIA-569-D-2015, Telecommunications Pathways and Spaces; ANSI/TIA-570-C-2012, Residential Telecommunications Infrastructure Standard; ANSI/TIA-1005-A-2012, Telecommunications Infrastructure Standard for Industrial Premises; ANSI/TIA-1179-2010; Healthcare Facility Telecommunications Infrastructure Standard and ANSI/TIA-4966-2014, Telecommunications Infrastructure Standard for Educational Facilities and other ANSI-approved installation standards.


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Second Revision No. 4563-NFPA 70-2015 [ Detail ]

SEE ATTACHED FOR INFORMATIONAL NOTE CHANGES



Attach_file_for_SR4563_DETAIL_for_800_INFORMATIONAL_NOTE.pdfInformational Note for 800 SR-4563.




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Submittal Date: Wed Nov 04 13:28:25 EST 2015

Committee Statement

CommitteeStatement:

Superfluous text is removed and the caption for Informational Note Figure 800(b) is revised tostate: "Informational Note Figure 800(b). Illustration of a Grounding Electrode Conductor in aCommunications Installation.”

ResponseMessage:

Public Comment No. 243-NFPA 70-2015 [Article 800 [Excluding any Sub-Sections]]


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Informational Note: See Informational Note Figure 800(a) and Informational Note Figure 800(b) thatillustrate illustrate the application of bonding and grounding electrode conductors incommunications installations.

Informational Note Figure 800(a). Illustrationof a Bonding Conductor in a Communications

Installation.

Informational Note Figure 800(b) Illustrationof Grounding Electrodes in a . Illustration of

a Grounding Electrode Conductor in aCommunications Installation.


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Second Revision No. 4506-NFPA 70-2015 [ Definition: Communications Equipment. ]

100, Communications Equipment.

The electronic equipment that performs the telecommunications operations for the transmission of audio,video, and data, and includes power equipment (e.g., dc converters, inverters, and batteries), technicalsupport equipment (e.g., computers), and conductors dedicated solely to the operation of the equipment.

Informational Note: This definition clearly indicates that the dc power equipment as well ascomputers are considered to be part of the communications equipment. As the telecommunicationsnetwork transitions to a more data centric network, communications equipment will also includerouters and servers computers, routers, servers, and their powering equipment, are becomingessential to the transmission of audio, video, and data and are finding increasing application incommunications equipment installations .




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Committee Statement

CommitteeStatement:

The informational note has been revised to remove the phrases “This definition clearlyindicates”, “are considered to be” and “will also include” in compliance with the NEC StyleManual, Section 3.1.3.

ResponseMessage:

Public Comment No. 1743-NFPA 70-2015 [Definition: Communications Equipment.]


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Second Revision No. 4505-NFPA 70-2015 [ Definition: Communications Raceway. ]

100, Communications Raceway.

An enclosed channel of nonmetallic materials designed expressly for holding communications wires andcables, optical fiber cables, data cables associated with information technology and communicationsequipment, Class 2, Class 3 and Type PLTC cables, and power-limited fire alarm cables inplenums plenum , risers riser , and general-purpose applications.




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Committee Statement

Committee Statement: This revision clarifies that the text “plenum” and “riser” modify the text “applications”.

Response Message:

Public Comment No. 297-NFPA 70-2015 [Definition: Communications Raceway.]


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Second Revision No. 4507-NFPA 70-2015 [ Definition: Exposed (to Accidental Contact).

]

770.2, Exposed (to Accidental Contact).

A conductive optical fiber cable in such a position that, in case of failure of supports or insulation, contactbetween the cable's non–current-carrying conductive members and an electrical circuit may result.

Informational Note: See Part I of Article 100 for two other definitions of Exposed: Exposed (as applied tolive parts) and Exposed (as applied to wiring methods).




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Committee Statement

CommitteeStatement:

The term “exposed” has multiple meanings throughout the NEC: uncovered and capable of beingtouched by persons, susceptible to physical damage, e.g., wiring attached to a surface, susceptibleto power influences such as contact or induction, and susceptible to lightning influences, either adirect ‘hit’, induction or ground potential rise. Hence, the informational note provides clarity and hasbeen maintained.

ResponseMessage:

Public Comment No. 175-NFPA 70-2015 [Definition: Exposed (to Accidental Contact).]


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Second Revision No. 4508-NFPA 70-2015 [ Definition: Point of Entrance. ]

770.2, Point of Entrance.

The point within a building at which the optical fiber cable emerges from an external wall , or from aconcrete floor slab, from rigid metal conduit (RMC), or from intermediate metal conduit (IMC) .




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Committee Statement

CommitteeStatement:

The definition of “point of entrance” is simplified and potential confusion is avoided by locating theinformation regarding the application of rigid metal conduit (RMC) and intermediate metal conduit(IMC) in 770.48(A), Conductive and Nonconductive Cable.

ResponseMessage:

Public Comment No. 444-NFPA 70-2015 [Definition: Point of Entrance.]


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Second Revision No. 4509-NFPA 70-2015 [ Section No. 770.24 ]

770.24 Mechanical Execution of Work.

Optical fiber cables shall be installed in a neat and workmanlike manner. Cables installed exposed on thesurface of ceilings and sidewalls shall be supported by the building structure in such a manner that thecable will not be damaged by normal building use. Such cables shall be secured by hardware, includingstraps, staples, cable ties, hangers, or similar fittings designed and installed so as not to damage the cable.The installation shall also conform to with 300.4(D) and 300.11. Nonmetallic cable ties and othernonmetallic cable accessories used to secure and support cables in other spaces used for environmentalair (plenums) shall be listed as having low smoke and heat release properties in accordance with800.170(C).

Informational Note No. 1: Accepted industry practices Industry practices for installing and testingare described in ANSI/NECA/BICSI 568-2006, Standard for Installing Commercial BuildingTelecommunications Cabling; ANSI/NECA/FOA 301-2015, Standard for Installing and Testing FiberOptic Cables; and other ANSI-approved installation standards.

Informational Note No. 2: See 4.3.11.2.6.5 and 4.3.11.5.5.6 of NFPA 90A-2015, Standard for theInstallation of Air-Conditioning and Ventilating Systems, for discrete combustible componentsinstalled in accordance with 300.22(C).

Informational Note No. 3: For additional information regarding overhead wires and cables, seeANSI C2-2012, National Electric Safety Code, Part 2, Safety Rules for Overhead Lines Paint,plaster, cleaners, abrasives, corrosive residues, or other contaminants can result in anundetermined alteration of optical fiber cable properties .




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Committee Statement

CommitteeStatement:

Article 770 deals with all types of optical fiber cable installations and not just installations dealingwith communications systems, then the installation requirements for optical fiber cables shouldcomply with all of Section 300.4. Optical fiber cables is used for life safety applications such as forfire alarm systems, some building system controls and industrial process controls.

Informational Note No. 1 was revised to eliminate the word "accepted" because it is generallythought of being associated with the authority having jurisdiction.

New Informational Note No. 3 identifies possible contamination of optical fiber cables during theconstruction process by paint or other foreign materials, potentially altering the fire resistance,smoke generating or other properties that are part of the cable listing requirements.

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Second Revision No. 4510-NFPA 70-2015 [ Section No. 770.44(B) ]

(B) Above Roofs.

Outside plant optical fiber cables shall have a vertical clearance of not less than 2.5 m (8 ft) from all pointsof roofs above which they pass.

Exception No. 1: The requirement of 770.44(B) shall not apply to auxiliary buildings such as garages andthe like.

Exception No. 2: A reduction in clearance above only the overhanging portion of the roof to not less than450 mm (18 in.) shall be permitted if (a) not more than 1.2 m (4 ft) of optical fiber cable service drop cablepasses above the roof overhang, and (b) the cable is terminated at a through- or above-the-roof racewayor approved support.

Exception No. 3: Where the roof has a slope of not less than 100 mm in 300 mm (4 in. in 12 in.), areduction in clearance to not less than 900 mm (3 ft) shall be permitted.

Informational Note: For additional information regarding overhead wires and cables, see ANSI/IEEEC2-2012, National Electric Safety Code, Part 2, Safety Rules for Overhead Lines.




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Committee Statement

CommitteeStatement:

C2-2012 was approved by ANSI on June 3, 2011 and is referenced to IEEE. The 2017 editionof the NESC has not yet been adopted.

ResponseMessage:

Public Comment No. 47-NFPA 70-2015 [Section No. 770.44(B)]


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Second Revision No. 4511-NFPA 70-2015 [ Section No. 770.48(A) ]

(A) Conductive and Nonconductive Cables.

Unlisted conductive and nonconductive outside plant optical fiber cables shall be permitted to be installed inbuilding spaces, other than risers, ducts used for environmental air, plenums used for environmental air,and other spaces used for environmental air, where the length of the cable within the building, measuredfrom its point of entrance, does not exceed 15 m (50 ft) and the cable enters the building from the outsideand is terminated in an enclosure.

The point of entrance shall be permitted to be extended from the penetration of the external wall or floorslab to the point of emergence from the rigid metal conduit (RMC) or intermediate metal conduit (IMC) bycontinuously enclosing the entrance optical fiber cables in rigid metal conduit (RMC) or intermediate metalconduit (IMC) to the point of emergence .

Informational Note: Splice cases or terminal boxes, both metallic and plastic types, typically are usedas enclosures for splicing or terminating optical fiber cables.




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Committee Statement

CommitteeStatement:

The text is appropriate as a requirement. According to the NEC Style Manual Section 3.1.3,informational notes shall not be written in mandatory language and shall not contain requirements,make interpretations, or make recommendations.

ResponseMessage:

Public Comment No. 177-NFPA 70-2015 [Section No. 770.48(A)]




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Second Revision No. 4531-NFPA 70-2015 [ Section No. 770.100(B)(2) ]

(2) In Buildings or Structures with Grounding Means.

If an intersystem bonding termination is established, all the rules of 250.94(A) apply.

If the building or structure served has no intersystem bonding termination, the bonding conductor orgrounding electrode conductor shall be connected to the nearest accessible location on the following:

(1) The building or structure grounding electrode system as covered in 250.50

(2) The grounded interior metal water piping system, within 1.5 m (5 ft) from its point of entrance to thebuilding, as covered in 250.52

(3) The power service accessible means external to enclosures using the options identified in theException of in 250.94. If an intersystem bonding termination is established, all the rules of 250.94apply (A) exception.

(4) The nonflexible metallic power service raceway

(5) The service equipment enclosure

(6) The grounding electrode conductor or the grounding electrode conductor metal enclosure of thepower service, or

(7) The grounding electrode conductor or the grounding electrode of a building or structure disconnectingmeans that is grounded to an electrode as covered in 250.32



SR-4531_770.100_B_2_Panel_16-CC.docx For staff use




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Submittal Date: Tue Nov 03 15:29:59 EST 2015

Committee Statement

CommitteeStatement:

The Panel has reviewed the list items for consistent language and improved consistency byplacing the second sentence of list item 3 as a requirement outside the list. In list Item 3 a changein First Revision separated 250.94 into two subsections A and B.

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Second Revision No. 4513-NFPA 70-2015 [ Section No. 770.110(A)(2) ]

(2) Communications Raceways.

Optical fiber cables shall be permitted to be installed in plenum communications raceways, risercommunications raceways, and general-purpose communications raceways selected in accordance withTable 800.154(b) , and listed listed in accordance with 800.113 and installed in accordance with 362.24through 362.56, where the requirements applicable to electrical nonmetallic tubing (ENT) apply.




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Committee Statement

CommitteeStatement:

The text “installed in accordance with” was inadvertently omitted in the first draft. There wasalso a superfluous “and” prior to “listed in accordance with 800.113”.

ResponseMessage:

Public Comment No. 180-NFPA 70-2015 [Section No. 770.110(A)(2)]



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(A) Listing.

Optical fiber cables installed in buildings shall be listed in accordance with 770 .179.

Exception: Optical fiber cables that are installed in compliance with770.48 shall not be required to belisted.




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Committee Statement

CommitteeStatement:

The addition of the wording “in accordance with 770.179” provides direction as to where thelisting and marking requirements are located.

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770.179 Optical Fiber Cables.

Optical fiber cables shall be listed, labeled and identified in accordance with 770.179(A) through (F) andshall be marked in accordance with Table 770.179. Optical fiber cables shall have a temperature rating ofnot less than 60°C (140°F). Temperature rating shall be marked on the jacket of optical fiber cables thathave a temperature rating exceeding 60°C (140°F).

(A) Types OFNP and OFCP.

Types OFNP and OFCP nonconductive and conductive optical fiber plenum cables shall be listed as beingsuitable for use in ducts, plenums, and other space used for environmental air and shall also be listed ashaving have adequate fire resistant and low smoke producing characteristics.

Informational Note: One method of defining a cable that is low-smoke producing cable andfire-resistant cable is that the cable exhibits a maximum peak optical density of 0.50 or less, anaverage optical density of 0.15 or less, and a maximum flame spread distance of 1.52 m (5 ft) or lesswhen tested in accordance with NFPA 262-2015, Standard Method of Test for Flame Travel andSmoke of Wires and Cables for Use in Air-Handling Spaces.

(B) Types OFNR and OFCR.

Types OFNR and OFCR nonconductive and conductive optical fiber riser cables shall be listed as beingsuitable for use in a vertical run in a shaft or from floor to floor and shall also be listed as having have thefire-resistant characteristics capable of preventing the carrying of fire from floor to floor.

Informational Note: One method of defining fire-resistant characteristics capable of preventing thecarrying of fire from floor to floor is that the cables pass the requirements of ANSI/UL 1666-2011,Standard Test for Flame Propagation Height of Electrical and Optical-Fiber Cable Installed Verticallyin Shafts.

(C) Types OFNG and OFCG.

Types OFNG and OFCG nonconductive and conductive general-purpose optical fiber cables shall be listedas being suitable for general-purpose use, with the exception of risers and plenums, and shall also belisted as being resistant to the spread of fire.

Informational Note: One method of defining resistant to the spread of fire is for the damage (charlength) not to exceed 1.5 m (4 ft 11 in.) when performing the CSA vertical flame test — cables incable trays, as described in CSA C22.2 No. 0.3-M-2001, Test Methods for Electrical Wires andCables.


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(D) Types OFN and OFC.

Types OFN and OFC nonconductive and conductive optical fiber cables shall be listed as being suitable forgeneral-purpose use, with the exception of risers, plenums, and other spaces used for environmental air,and shall also be listed as being resistant to the spread of fire.

Informational Note No. 1: One method of defining resistant to the spread of fire is that the cables donot spread fire to the top of the tray in the UL flame exposure, vertical tray flame test in ANSI/UL1685-2010, Standard for Safety for Vertical-Tray Fire-Propagation and Smoke-Release Test forElectrical and Optical-Fiber Cables. The smoke measurements in the test method are not applicable.

Another method of defining resistant to the spread of fire is for the damage (char length) not toexceed 1.5 m (4 ft 11 in.) when performing the CSA vertical flame test — cables in cable trays, asdescribed in CSA C22.2 No. 0.3-M-2001, Test Methods for Electrical Wires and Cables.

Informational Note No. 2: Cable types are listed in descending order of fire resistance rating. Withineach fire resistance rating, nonconductive cable is listed first because it may substitute is oftensubstituted for the conductive cable.

Table 770.179 Cable Markings

Cable Marking Type

OFNP Nonconductive optical fiber plenum cable

OFCP Conductive optical fiber plenum cable

OFNR Nonconductive optical fiber riser cable

OFCR Conductive optical fiber riser cable

OFNG Nonconductive optical fiber general-purpose cable

OFCG Conductive optical fiber general-purpose cable

OFN Nonconductive optical fiber general-purpose cable

OFC Conductive optical fiber general-purpose cable

(E) Circuit Integrity (CI) Cable or Electrical Circuit Protective System.

Cables that are used for survivability of critical circuits under fire conditions shall be listed and meet either770.179(E)(1) or (E)(2).

Informational Note: The listing organization provides information for circuit integrity (CI) cable andelectrical circuit protective systems, including installation requirements necessary to maintain the firerating.

(1) Circuit Integrity (CI) Cables.

Circuit integrity (CI) cables specified in 770.179(A) through (D), and used for survivability of critical circuits,shall have an additional classification using the suffix “CI.” In order to maintain its listed fire rating, circuitintegrity (CI) cable shall only be installed in free air.

Informational Note: One method of defining circuit integrity (CI) cable is by establishing a minimum2-hour fire resistance rating for the cable when tested in accordance with ANSI/UL 2196-2006,Standard for Tests of Fire-Resistive Cable.

(2) Fire-Resistive Cables.

Cables specified in 770.179(A) through (D) and 770.179(E)(1) , that are part of an electrical circuitprotective system, shall be fire-resistive cable and identified with the protective system number on theproduct or on the smallest unit container in which the product is packaged and installed in accordance withthe listing of the protective system.

Informational Note No. 1: One method of defining an electrical circuit protective system is byestablishing a minimum 2-hour fire resistance rating for the system when tested in accordance withUL Subject 1724, Outline of Investigation for Fire Tests for Electrical Circuit Protective Systems.

Informational Note No. 2: The listing organization provides information for electrical circuit protectivesystems (FHIT), including installation requirements for maintaining the fire rating.


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(F) Field-Assembled Optical Fiber Cables.

Field-assembled optical fiber cable shall comply with 770.179(F)(1) through (4).

(1) The specific combination of jacket and optical fibers intended to be installed as a field-assembledoptical fiber cable shall be listed in accordance with one of the types identified by 770.179(A), (B), or(D) and shall be marked in accordance with Table 770.179.

(2) The jacket of a field-assembled optical fiber cable shall have a surface marking indicating the specificoptical fibers with which it is listed for identified for use.

(3) The optical fibers shall have a permanent marking, such as a marker tape, indicating the jacket withwhich they are listed for identified for use.

(4) The jacket without fibers shall meet the listing requirements for communications raceways in800.182(A), (B), or (C) in accordance with the cable marking.




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CommitteeStatement:

The label on the product is the manufacturer’s attestation that the product is in compliance withthe appropriate standard. The lead paragraph establishes a requirement for listing and it is notnecessary to repeat throughout the section.

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800.1 Scope.

This article covers communications circuits and equipment.

Informational Note No. 1: For See 90.2(B)(4) for installations of communications circuits andequipment that are not covered.

Informational Note No. 2: For further information for remote-control, signaling, and power-limitedcircuits, see Article 725 .

Informational Note No. 2 3 : For further information for fire alarm systems, see Article 760.




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CommitteeStatement:

Informational Note No. 1 referencing 90.2(B)(4) is not to be deleted. It is extremely important, froma communications-provider point of view, that the reader and user of the Code be reminded thatthere are circumstances under which Article 800 does not apply.

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]


A circuit that is in such a position that, in case of failure of supports or insulation, contact with another circuitmay result.

Informational Note: See Part I of Article 100 for two other definitions of Exposed.




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CommitteeStatement:

The term “Exposed” has multiple meanings throughout the NEC: uncovered and capable of beingtouched by persons, susceptible to physical damage, e.g., wiring attached to a surface, susceptibleto power influences such as contact or induction, and susceptible to lightning influences, either adirect ‘hit’, induction or ground potential rise. Hence, the informational note provides clarity andshould be maintained.

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Second Revision No. 4504-NFPA 70-2015 [ Definition: Innerduct. ]

Innerduct800 .

A nonmetallic raceway placed within a larger raceway.

2




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Committee Statement

CommitteeStatement:

The definition of “Innerduct” was relocated to Article 100 in the first revision. Hence, it hasbeen deleted in Section 800.2.

ResponseMessage:

Public Comment No. 448-NFPA 70-2015 [Definition: Innerduct.]


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800. 2, Point of Entrance.

The point within a building at which the communications wire or cable emerges from an external wall , orfrom a concrete floor slab, from rigid metal conduit (RMC), or from intermediate metal conduit (IMC) .




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Committee Statement

CommitteeStatement:

A first revision for 800.48 added “The point of entrance shall be permitted to be extended from thepenetration of the external wall or floor slab to the point of emergence from the rigid metal conduit(RMC) or intermediate metal conduit (IMC) by continuously enclosing the entrance cables in rigidmetal conduit (RMC) or intermediate metal conduit (IMC).” The definition of point of entrance ismodified to remove the text about the point of entrance being the point where the cable emergesfrom the RMC or the IMC.

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Second Revision No. 4520-NFPA 70-2015 [ Section No. 800.3(F) ]

(F) Premises-Powered Broadband Communications Systems.

Article 840 shall apply to premises-powered broadband communications systems. Part VI of Article 840shall apply to communications equipment and cables that provide both power and communications signalsto communications equipment.

Informational Note: Article 840 does not cover circuits such as those providing plain old telephoneservices (POTS) and similar legacy telecommunications services.




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Committee Statement

Committee Statement: The second sentence is deleted to conform with NEC Style Manual Section 4.1.1.

The informational note does not provide additional clarity.

Response Message:

Public Comment No. 1872-NFPA 70-2015 [Section No. 800.3(F)]


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Second Revision No. 4566-NFPA 70-2015 [ New Section after 800.3(G) ]

Temperature Limitation of Conductors. Section 310.15(A)(3) shall apply.




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Submittal Date: Thu Nov 05 13:16:12 EST 2015

Committee Statement

CommitteeStatement:

A reference to 310.15(A)(3) is necessary to ensure proper temperature limitations ofconductors.

Response Message:

Public Comment No. 950-NFPA 70-2015 [Section No. 800.3(G)]


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800.24 Mechanical Execution of Work.

Communications circuits and equipment shall be installed in a neat and workmanlike manner. Cablesinstalled exposed on the surface of ceilings and sidewalls shall be supported by the building structure insuch a manner that the cable will not be damaged by normal building use. Such cables shall be secured byhardware, including straps, staples, cable ties, hangers, or similar fittings, designed and installed so as notto damage the cable. The installation shall also conform to 300.4(D) and 300.11. Nonmetallic cable tiesand other nonmetallic cable accessories used to secure and support cables in other spaces used forenvironmental air (plenums) shall be listed as having low smoke and heat release properties in accordancewith 800.170(C).

Informational Note No. 1: Accepted industry practices are described in ANSI/NECA/BICSI 568-2006,Standard for Installing Commercial Building Telecommunications Cabling; ANSI/TIA/-568-C.1-2009— Commercial Building Telecommunications Cabling Standard; ANSI/TIA-569-C-2012,Telecommunications Pathways and Spaces; ANSI/TIA-570-C-2012, Residential TelecommunicationsInfrastructure Standard; and other ANSI-approved installation standards.

Informational Note No. 2: See 4.3.11.2.6.5 and 4.3.11.5.5.6 of NFPA 90A-2015, Standard for theInstallation of Air-Conditioning and Ventilating Systems, for discrete combustible componentsinstalled in accordance with 300.22(C).

Informational Note No. 3: Paint, plaster, cleaners, abrasives, corrosive residues, or othercontaminants may result in an undetermined alteration of optical fiber communications wire andcable properties.




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CommitteeStatement:

Section 800.24 and Informational Note No. 3 deals with communications cables and wire,not optical fiber cables.

ResponseMessage:




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(B) Above Roofs.

Communications wires and cables shall have a vertical clearance of not less than 2.5 m (8 ft) from all pointsof roofs above which they pass.

Exception No. 1: Communications wires and cables shall not be required to have a vertical clearance ofnot less than 2.5 m (8 ft) above auxiliary buildings, such as garages and the like.

Exception No. 2: A reduction in clearance above only the overhanging portion of the roof to not less than450 mm (18 in.) shall be permitted if (a) not more than 1.2 m (4 ft) of communications service-dropconductors pass above the roof overhang and (b) they are terminated at a through- or above-the-roofraceway or approved support.


Informational Note: For additional information regarding overhead (aerial) wires and cables, seeANSI/IEEE C2-2012, National Electrical Safety Code, Part 2, Safety Rules for Overhead Lines.




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CommitteeStatement:

C2-2012 was approved by ANSI on June 3, 2011 and is referenced to IEEE. The 2017 editionof the NESC has not yet been adopted.

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800.48 Unlisted Cables Entering Buildings.

Unlisted outside plant communications cables shall be permitted to be installed in building spaces otherthan risers, ducts used for environmental air, plenums used for environmental air, and other spaces usedfor environmental air, where the length of the cable within the building, measured from its point of entrance,does not exceed 15 m (50 ft) and the cable enters the building from the outside and is terminated in anenclosure or on a listed primary protector. The point of entrance shall be permitted to be extended from thepenetration of the external wall or floor slab to the point of emergence from the rigid metal conduit (RMC)or intermediate metal conduit (IMC) by continuously enclosing the entrance cables in rigid metal conduit(RMC) or intermediate metal conduit (IMC) to the point of emergence .

Informational Note No. 1: Splice cases or terminal boxes, both metallic and plastic types, aretypically used as enclosures for splicing or terminating telephone cables.

Informational Note No. 2: This section limits the length of unlisted outside plant cable to 15 m (50 ft),while 800.90(B) requires that the primary protector be located as close as practicable to the point atwhich the cable enters the building. Therefore, in installations requiring a primary protector, theoutside plant cable may not be permitted to extend 15 m (50 ft) into the building if it is practicable toplace the primary protector closer than 15 m (50 ft) to the point of entrance.




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Committee Statement

CommitteeStatement:

The text is appropriate as a requirement. According to the NEC Style Manual Section 3.1.3,informational notes shall not be written in mandatory language and shall not contain requirements,make interpretations, or make recommendations. The proposed Informational Note 3 is superfluousbased on changes made to the mandatory text.

This second revision reflects the CC concerns on the ballot comments and PC-190 concernsregarding the committee statement for FR-4654.

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(1) Fuseless Primary Protectors.

Fuseless-type primary protectors shall be permitted under any of the conditions given in (A)(1)(a) through(A)(1)(e).

(a) Where conductors enter a building through a cable with grounded metallic sheath member(s) and wherethe conductors in the cable safely fuse on all currents greater than the current-carrying capacity of theprimary protector and of the primary protector bonding conductor or grounding electrode conductor

(b) Where insulated conductors in accordance with 800.50(A) are used to extend circuits to a building froma cable with an effectively grounded metallic sheath member(s) and where the conductors in the cable orcable stub, or the connections between the insulated conductors and the plant exposed to accidentalcontact with electric light or power conductors operating at greater than 300 volts to ground, safely fuse onall currents greater than the current-carrying capacity of the primary protector, or the associated insulatedconductors and of the primary protector bonding conductor or grounding electrode conductor

(c) Where insulated conductors in accordance with 800.50(A) or (B) are used to extend circuits to abuilding from other than a cable with metallic sheath member(s), where (1) the primary protector is listed asbeing suitable for this purpose for application with circuits extending from other than a cable with metallicsheath members, and (2) the connections of the insulated conductors to the plant exposed to accidentalcontact with electric light or power conductors operating at greater than 300 volts to ground or theconductors of the plant exposed to accidental contact with electric light or power conductors operating atgreater than 300 volts to ground safely fuse on all currents greater than the current-carrying capacity of theprimary protector, or associated insulated conductors and of the primary protector bonding conductor orgrounding electrode conductor

(d) Where insulated conductors in accordance with 800.50(A) are used to extend circuits aerially to abuilding from a buried or underground circuit that is unexposed to accidental contact with electric light orpower conductors operating at greater than 300 volts to ground

(e) Where insulated conductors in accordance with 800.50(A) are used to extend circuits to a building fromcable with an effectively grounded metallic sheath member(s), and where (1) the combination of the primaryprotector and insulated conductors is listed as being suitable for this purpose for application with circuitsextending from a cable with an effectively grounded metallic sheath member(s), and (2) the insulatedconductors safely fuse on all currents greater than the current-carrying capacity of the primary protectorand of the primary protector bonding conductor or grounding electrode conductor

Informational Note: Section 9 of ANSI/IEEE C2-2012, National Electrical Safety Code, provides anexample of methods of protective grounding that can achieve effective grounding of communicationscable sheaths for cables from which communications circuits are extended.




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Committee Statement

Committee Statement: C2-2012 was approved by ANSI on June 3, 2011 and is referenced to IEEE.

Response Message:


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If an intersystem bonding termination is established, all the rules of 250.94(A) shall apply.

If the building or structure served has no intersystem bonding termination, the bonding conductor orgrounding electrode conductor shall be connected to the nearest accessible location on one of thefollowing:



(3) The power service accessible means external to enclosures using the options identified in theException of in 250.94. If an intersystem bonding termination is established, all the rules of 250.94shall apply. (A) exception .




(7) The grounding electrode conductor or the grounding electrode of a building or structure disconnectingmeans that is grounded to an electrode as covered in 250.32

A bonding device intended to provide a termination point for the bonding conductor (intersystem bonding)shall not interfere with the opening of an equipment enclosure. A bonding device shall be mounted onnonremovable parts. A bonding device shall not be mounted on a door or cover even if the door or cover isnonremovable.

For purposes of this section, the mobile home service equipment or the mobile home disconnecting means,as described in 800.90(B) , shall be considered accessible.







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Committee Statement

CommitteeStatement:

The Panel has reviewed the list items for consistent language and improved consistency byplacing the second sentence of list Item 3 as a requirement outside the list. In list Item 3 a changein First Revision separated 250.94 into two subsections A and B.


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Second Revision No. 4567-NFPA 70-2015 [ Section No. 800.113(J) ]

(J) Other Building Locations.

The following wires, cables, raceways, and cable routing assemblies shall be permitted to be installed inbuilding locations other than the locations covered in 800.113(B) through (I):

(1) Types CMP, CMR, CMG, and CM cables

(2) A maximum of 3 m (10 ft) of exposed Type CMX in nonconcealed spaces

(3) Plenum, riser, and general-purpose communications raceways

(4) Plenum, riser, and general-purpose cable routing assemblies

(5) Communications wires and Types CMP, CMR, CMG, and CM cables installed in:

(6) Plenum communications raceways

(7) Riser communications raceways

(8) General-purpose communications raceways

(9) Types CMP, CMR, CMG, and CM cables installed in:

(10) Plenum cable routing assemblies

(11) Riser cable routing assemblies

(12) General-purpose cable routing assemblies

(13) Communications wires and Types CMP, CMR, CMG, CM, and CMX cables installed in racewaysrecognized in Chapter 3

(14) Type CMUC under-carpet communications wires and cables installed under carpet or under floorcovering , modular tiles, flooring and planks




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Committee Statement

CommitteeStatement:

Modular flooring which is removable is a more appropriate application of under-carpetcables.

Response Message:

Public Comment No. 220-NFPA 70-2015 [Section No. 800.113(J)]


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Second Revision No. 4568-NFPA 70-2015 [ Section No. 800.113(K) ]

(K) Multifamily Dwellings.

The following cables, raceways, and cable routing assemblies shall be permitted to be installed inmultifamily dwellings in locations other than the locations covered in 800.113(B) through (G):


(2) Type CMX cables less than 6 mm (0.25 in.) in diameter in nonconcealed spaces
















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CommitteeStatement:


Response Message:

Public Comment No. 221-NFPA 70-2015 [Section No. 800.113(K)]


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Second Revision No. 4569-NFPA 70-2015 [ Section No. 800.113(L) ]

(L) One- and Two-Family Dwellings.

The following cables, raceways, and cable routing assemblies shall be permitted to be installed in one- andtwo-family dwellings in locations other than the locations covered in 800.113(B) through 800.113(F):


(2) Type CMX cables less than 6 mm (0.25 in.) in diameter













(15) Hybrid power and communications cable listed in accordance with 800.179(I)




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CommitteeStatement:


Response Message:

Public Comment No. 222-NFPA 70-2015 [Section No. 800.113(L)]


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(1) In Raceways, Cable Trays, Boxes, Cables, Enclosures, and Cable Routing Assemblies.

(a) Optical Fiber and Communications Cables Other Circuits . Communications cables shall be permittedin the same raceway, cable tray, box, enclosure, or cable routing assembly with cables of any of thefollowing:

(1) Class 2 and Class 3 remote-control, signaling, and power-limited circuits in compliance with Article645 or Parts I and III of Article 725

(2) Power-limited fire alarm systems in compliance with Parts I and III of Article 760

(3) Nonconductive and conductive optical fiber cables in compliance with Parts I and V of Article 770

(4) Community antenna television and radio distribution systems in compliance with Parts I and V ofArticle 820

(5) Low-power network-powered broadband communications circuits in compliance with Parts I and V ofArticle 830

(b) Other Circuits. Communications cables shall be permitted in the same raceway, cable tray, box,enclosure, or cable routing assembly with cables of any of the following: Class 2 and Class 3 remote-control, signaling, and power-limited circuits in compliance with Article 645 or Parts I and III of Article725

Power-limited fire alarm systems in compliance with Parts I and III of Article 760

(c) Class 2 and Class 3 Circuits. Class 1 circuits shall not be run in the same cable with communicationscircuits. Class 2 and Class 3 circuit conductors shall be permitted in the same cable with communicationscircuits, in which case the Class 2 and Class 3 circuits shall be classified as communications circuits andshall meet the requirements of this article. The cables shall be listed as communications cables.

Exception: Cables constructed of individually listed Class 2, Class 3, and communications cables under acommon jacket shall not be required to be classified as communications cable. The fire-resistance ratingof the composite cable shall be determined by the performance of the composite cable.

(d c ) Electric Light, Power, Class 1, Non–Power-Limited Fire Alarm, and Medium-Power Network-PoweredBroadband Communications Circuits in Raceways, Compartments, and Boxes. Communicationsconductors shall not be placed in any raceway, compartment, outlet box, junction box, or similar fitting withconductors of electric light, power, Class 1, non–power-limited fire alarm, or medium-power network-powered broadband communications circuits.

Exception No. 1: Section 800.133(A)(1) (d)shall not apply if all of the conductors of electric light, power,Class 1, non–power-limited fire alarm, and medium-power network-powered broadband communicationscircuits are separated from all of the conductors of communications circuits by a permanent barrier orlisted divider.

Exception No. 2: Power conductors in outlet boxes, junction boxes, or similar fittings or compartmentswhere such conductors are introduced solely for power supply to communications equipment. The powercircuit conductors shall be routed within the enclosure to maintain a minimum of 6 mm ( 1⁄4 in.) separationfrom the communications circuit conductors.

Exception No. 3: As permitted by 620.36.



SR-4534_800.133_A_1_Panel_16-CC.docx For staff use



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Committee Statement

CommitteeStatement:

Consistent requirements for cable routing assemblies contained in Articles 725, 760, 800, 820and 830 permit consolidation of original sub-sections (a) and (b) in 800.133(A)(1). This revisioncorrelates with similar requirements in Articles 770, 820 and 830.

ResponseMessage:



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800.154 Applications of Listed Communications Wires, Cables and Raceways, and Listed Cable RoutingAssemblies.


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Permitted and nonpermitted applications of listed communications wires, cables, and raceways, and listedcable routing assemblies, shall be in accordance with one of the following:

(1) Listed communications wires and cables as indicated in Table 800.154(a)

(2) Listed communications raceways as indicated in Table 800.154(b)

(3) Listed cable routing assemblies as indicated in Table 800.154(c)

The permitted applications shall be subject to the installation requirements of 800.110 and 800.113. Thesubstitutions for communications cables listed in Table 800.154(d) and illustrated in Figure 800.154 shallbe permitted.

Table 800.154(a) Applications of Listed Communications Wires and Cables in Buildings

Applications

Wire and Cable Type

CMP CMRCMGCM

CMX CMUC

Hybrid powerand

Communicationscables

Communicationswires

In ductsspecifically

fabricated forenvironmental

air asdescribed in300.22(B)

In fabricatedducts

Y* N N N N N N

In metalraceway thatcomplies with300.22(B)

Y* Y* Y* Y* N N Y*

In otherspaces used

forenvironmental

air as(plenums)

described in300.22(C)

In other spacesused forenvironmentalair

Y* N N N N N N

In metalraceway thatcomplies with300.22(C)

Y* Y* Y* Y* N N Y*

In plenumcommunicationsraceways

Y* N N N N N N

In plenum cableroutingassemblies

Y* N N N N N N

Supported byopen metalcable trays

Y* N N N N N N

Supported bysolid bottommetal cabletrays with solidmetal covers

Y* Y* Y* Y* N N N

In risers In vertical runs Y* Y* N N N N N

In metalraceways

Y* Y* Y* Y* N N N

In fireproofshafts

Y* Y* Y* Y* N N N


Y* Y* N N N N N


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Applications

Wire and Cable Type

CMP CMRCMGCM

CMX CMUC

Hybrid powerand


Communicationswires


Y* Y* N N N N N

In risercommunicationsraceways

Y* Y* N N N N N

In riser cableroutingassemblies

Y* Y* N N N N N

In one- andtwo-familydwellings

Y* Y* Y* Y* N Y* N

Withinbuildings inother than

air-handlingspaces and

risers

General Y* Y* Y* Y* N N N

In one- andtwo-familydwellings

Y* Y* Y* Y* Y* Y* N

In multifamilydwellings

Y* Y* Y* Y* Y* N N

In nonconcealedspaces

Y* Y* Y* Y* Y* N N

Supported bycable trays

Y* Y* Y* N N N N

Under carpet orunder floorcovering,modular tiles,and planks

N N N N Y* N N

In distributingframes andcross-connectarrays

Y* Y* Y* N N N Y*

In any racewayrecognized inChapter 3

Y* Y* Y* Y* N N Y*


Y* Y* Y* N N N Y*


Y* Y* Y* N N N Y*

In risercommunicationsraceways

Y* Y* Y* N N N Y*

In riser cableroutingassemblies

Y* Y* Y* N N N Y*

In general-purposecommunications

Y* Y* Y* N N N Y*


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Applications

Wire and Cable Type

CMP CMRCMGCM

CMX CMUC

Hybrid powerand


Communicationswires

raceways

In general-purpose cableroutingassemblies

Y* Y* Y* N N N Y*

Note: An “N” in the table indicates that the cable type is not permitted to be installed in the application. A“Y*” indicates that the cable type is permitted to be installed in the application subject to the limitationsdescribed in 800.113.

Informational Note No. 1: Part V of Article 800 covers installation methods within buildings. This tablecovers the applications of listed communications wires, cables, and raceways in buildings. See thedefinition of Point of Entrance in 800.2.

Informational Note No. 2: For information on the restrictions to the installation of communications cables infabricated ducts, see 800.113(B).

Table 800.154(b) Applications of Listed Communications Raceways in Buildings

Listed CommunicationsRaceway Type

Applications Plenum RiserGeneral-Purpose

In ducts specifically fabricated forenvironmental air as described in300.22(B)

In fabricated ducts N N N

In metal raceway that complieswith 300.22(B) N N N

In other spaces used forenvironmental air (plenums) asdescribed in 300.22(C)

In other spaces used forenvironmental air Y* N N

In metal raceway that complieswith 300.22(C) Y* Y* Y*

In plenum cable routingassemblies N

N N

Supported by open metal cabletrays Y* N N

Supported by solid bottom metalcable trays with solid metalcovers Y* Y* Y*

In risers

In vertical runs Y* Y* N

In metal raceways Y* Y* Y*

In fireproof shafts Y* Y* Y*

In plenum cable routingassemblies N N N

In riser cable routing assemblies N N N

In one- and two-family dwellings Y* Y* Y*

Within buildings in other thanair-handling spaces and risers

General Y* Y* Y*


In multifamily dwellings Y* Y* Y*

In nonconcealed spaces Y* Y* Y*

Supported by cable trays Y* Y* Y*


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Listed CommunicationsRaceway Type


Under carpet or under floorcovering, modular tiles, andplanks N N N

In distributing frames and cross-connect arrays Y* Y* Y*

In any raceway recognized inChapter 3 Y* Y* Y*

In plenum cable routingassemblies N N N

In riser cable routing assemblies N N N

In general-purpose cable routingassemblies N N N

Note: An “N” in the table indicates that the communications raceway type shall not be permitted to beinstalled in the application. A “Y*” indicates that the communications raceway type shall be permitted to beinstalled in the application, subject to the limitations described in 800.110 and 800.113.

Table 800.154(c) Applications of Listed Cable Routing Assemblies in Buildings

Listed Cable RoutingAssembly Type


In ducts specifically fabricated forenvironmental air as described in300.22(B)

In fabricated ducts N N N

In metal raceway that complieswith 300.22(B) N N N

In other spaces used forenvironmental air (plenums) asdescribed in 300.22(C)

In other spaces used forenvironmental air Y* N N

In metal raceway that complieswith 300.22(C) N N N

In plenum communicationsraceways N N N

Supported by open metal cabletrays N N N

Supported by solid bottom metalcable trays with solid metal covers N N N

In risers

In vertical runs Y* Y* N

In metal raceways N N N

In fireproof shafts Y* Y* Y*


In riser communications raceways N N N


Within buildings in other thanair-handling spaces and risers

General Y* Y* Y*


In multifamily dwellings Y* Y* Y*

In nonconcealed spaces Y* Y* Y*

Supported by cable trays N N N


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Listed Cable RoutingAssembly Type


Under carpet or under floorcovering, modular tiles, and planks N N N

In distributing frames and cross-connect arrays Y* Y* Y*

In any raceway recognized inChapter 3 N N N


In riser communications raceways N N N

In general-purposecommunications raceways N N N

Note: An “N” in the table indicates that the cable routing assembly type shall not be permitted to be installedin the application. A “Y*” indicates that the cable routing assembly type shall be permitted to be installed inthe application subject to the limitations described in 800.113.

Table 800.154(d) Cable Substitutions

Cable Type Permitted Substitutions

CMR CMP

CMG, CM CMP, CMR

CMX CMP, CMR, CMG, CM

Figure 800.154 Cable Substitution Hierarchy.




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Committee Statement

CommitteeStatement:

The sentence “The definition of Point of Entrance is in 800.2.” of Informational Note No. 1 to Table800.154(a) was incorrectly deleted in the First Revision. It is only the third sentence that should bedeleted as indicated in the Committee Statement to FR 4676 where it is stated: “It is sufficient thatInformational Note No. 1 direct the reader to the definition in 800.2 thus avoiding potentialconfusion.”

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800.170 Equipment.

Communications equipment shall be listed as being suitable for electrical connection to a communicationsnetwork.

Informational Note: One way to determine applicable requirements is to refer to ANSI/ UL60950-1-2007 2014 , Standard for Safety of Information Technology Equipment; UL1459-1999 1998 , Standard for Safety Telephone Equipment ; or ANSI/ UL 1863-2004 2012 ,Standard for Safety Communications Circuit Accessories; or ANSI/ UL 62368-1-2014,Audio/Video,Information and Communication Technology Equipment – Part 1: Safety Requirements.

(A) Primary Protectors.

The primary protector shall consist of an arrester connected between each line conductor and ground in anappropriate mounting. Primary protector terminals shall be marked to indicate line and ground asapplicable.

Informational Note: One way to determine applicable requirements for a listed primary protector is torefer to ANSI/UL 497-2009 2013 , Standard for Protectors for Paired Conductor CommunicationsCircuits.

(B) Secondary Protectors.

The secondary protector shall be listed as suitable to provide means to safely limit currents to less than thecurrent-carrying capacity of listed indoor communications wire and cable, listed telephone set line cords,and listed communications terminal equipment having ports for external wire line communications circuits.Any overvoltage protection, arresters, or grounding connection shall be connected on the equipmentterminals side of the secondary protector current-limiting means.

Informational Note: One way to determine applicable requirements for a listed secondary protector isto refer to ANSI/UL 497A-2008 2012 , Standard for Secondary Protectors for CommunicationsCircuits.

(C) Plenum Grade Cable Ties.

Cable ties intended for use in other space used for environmental air (plenums) shall be listed as havinglow smoke and heat release properties.

Informational Note: See NFPA 90A-2015, Standard for the Installation of Air-Conditioning andVentilating Systems, and ANSI/UL 2043-2013 , Standard for Safety Fire Test for Heat and VisibleSmoke Release for Discrete Products and Their Accessories Installed in Air-Handling Spaces, forinformation on listing discrete products as having low smoke and heat release properties.




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Committee Statement

CommitteeStatement:

Referenced UL documents are updated to the current issue and reference to ANSI has beenadded as applicable.


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ResponseMessage:

Public Comment No. 208-NFPA 70-2015 [Section No. 800.170 [Excluding any Sub-Sections]]



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(A) Plenum Cable Routing Assemblies and Plenum Communications Raceways.

Plenum cable routing assemblies and plenum communications raceways shall be listed as having adequatefire-resistant and low-smoke producing characteristics.

Informational Note No. 1: One method of defining cable routing assemblies and communicationsraceways that have adequate fire-resistant and low-smoke producing characteristics is that theyexhibit a maximum flame spread index of 25 and a maximum smoke developed index of 50 whentested in accordance with ASTM E84-2014 15a , Standard Test Method for Surface BurningCharacteristics of Building Materials, or ANSI/UL 723-2013, Standard Test Method for SurfaceBurning Characteristics of Building Materials.

Informational Note No. 2: Another method of defining communications raceways that have adequatefire-resistant and low-smoke producing characteristics is that they exhibit a maximum peak opticaldensity of 0.50 or less, an average optical density of 0.15 or less, and a maximum flame spreaddistance of 1.52 m (5 ft) or less when tested in accordance with NFPA 262-2015, Standard Methodof Test for Flame Travel and Smoke of Wires and Cables for Use in Air-Handling Spaces.

Informational Note No. 3: See 4.3.11.2.6 or 4.3.11.5.5 of NFPA 90A-2015, Standard for theInstallation of Air-Conditioning and Ventilating Systems, for information on materials exposed to theairflow in ceiling cavity and raised floor plenums.




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CommitteeStatement:

The word “plenum” has been added to the title as the section addresses plenum routingassemblies and plenum communications raceways. Informational Note No. 1 is updated to thecurrent edition, ASTM E84-15a.

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810.6 Antenna Lead-In Protectors.

Where an antenna lead-in surge protector is installed, it shall be listed as being suitable for limiting surgeson the cable that connects the antenna to the receiver/transmitter electronics and shall be connectedbetween the conductors and the grounded shield or other ground connection. The antenna lead-in protectorshall be grounded using a bonding conductor or grounding electrode conductor installed in accordance with810.21(F) .

Informational Note: For requirements covering protectors for antenna lead-in conductors, refer to ULSubject 497E Outline , Outline of Investigation for Protectors for Antenna Lead-In Conductors.




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Committee Statement

CommitteeStatement:

The informational note is revised to reflect the current title of UL 479E as “UL 479 E Outline,Outline of Investigation for Protectors for Antenna Lead-In Conductors”.

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810.15 Grounding.

Masts and metal structures supporting antennas shall be grounded in accordance with 810.21, unless theantenna and its related supporting mast or structure are within a zone of protection defined by a 46 m (150ft) radius rolling sphere.

Informational Note: See NFPA 780-2014, Standard for the Installation of Lightning ProtectionSystems , 4.8.3.1 for the theory the application of the term “rolling sphere.”




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Committee Statement

Committee Statement: Use of the word “application” clarifies the intended purpose of the informational note.

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]


A circuit in such a position that, in case of failure of supports and or insulation, contact with another circuitmay result.

Informational Note: See Part I of Article 100 for two other definitions of Exposed.




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CommitteeStatement:

The term “Exposed” has multiple meanings throughout the NEC: uncovered and capable of beingtouched by persons, susceptible to physical damage, e.g., wiring attached to a surface, susceptibleto power influences such as contact or induction, and susceptible to lightning influences, either adirect ‘hit’, induction or ground potential rise. Hence, the informational note provides clarity andshould be maintained.

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820.2 Point of Entrance.

The point within a building at which the coaxial cable emerges from an external wall , or from a concretefloor slab, from rigid metal conduit (RMC), or from intermediate metal conduit (IMC) .




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CommitteeStatement:

The definition “Point of Entrance” is simplified and potential confusion is avoided by locating theinformation regarding the application of rigid metal conduit (RMC) and intermediate metal conduit(IMC) in Section 820.48.

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820.48 Unlisted Cables Entering Buildings.

Unlisted outside plant coaxial cables shall be permitted to be installed in building spaces other than risers,ducts used for environmental air, plenums used for environmental air, and other spaces used forenvironmental air, where the length of the cable within the building, measured from its point of entrance,does not exceed 15 m (50 ft) and the cable enters the building from the outside and is terminated at agrounding block. The point of entrance shall be permitted to be extended from the penetration of theexternal wall or floor slab to the point of emergence from the rigid metal conduit (RMC) or intermediatemetal conduit (IMC) by continuously enclosing the entrance cables in rigid metal conduit (RMC) orintermediate metal conduit (IMC) to the point of emergence .




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CommitteeStatement:

The proposed added text clarifies the application of rigid metal conduit (RMC) and intermediatemetal conduit (IMC) with unlisted cables entering buildings and eliminates potential confusion bypermitting simplification of the definition “Point of “Entrance” in 820.2. Inclusion as mandatory textinstead of in the informational note permits and facilitates enforcement by the authority havingjurisdiction (AHJ).

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(3) The power service accessible means external to enclosures using the options identified in theException of 250.94. If an intersystem bonding termination is established, all the rules of 250.94shall apply. (A) Exception.




(7) The grounding electrode conductor or the grounding electrode of a building or structure disconnectingmeans that is connected to an electrode as covered in 250.32


For purposes of this section, the mobile home service equipment or the mobile home disconnecting means,as described in 820.93, shall be considered accessible.







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Committee Statement

CommitteeStatement:

The Panel has reviewed the list items for consistent language and improved consistency byplacing the second sentence of list Item 3 as a requirement outside the list. In list Item 3 the panelrecognizes a change in First Revision that separates 250.94 into two subsections A and B.


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ResponseMessage:

Public Comment No. 1877-NFPA 70-2015 [Section No. 820.100(B)(2)]


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(3) Innerduct for Coaxial Cables.

Listed plenum communications raceways, listed riser communications raceways, and listed general-purpose communications raceways selected in accordance with the provisions of Table 800.154(b) shallbe permitted to be installed as innerduct in any type of listed raceway permitted in Chapter 3 .




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Committee Statement

Committee Statement: The words "the provisions of" are superfluous and have been deleted.

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820.179 Coaxial Cables.

Cables shall be listed in accordance with 820.179(A) through (D) and marked in accordance with Table820.179. The cable voltage rating shall not be marked on the cable. Coaxial cables shall have atemperature rating of not less than 60°C (140°F). The temperature rating shall be marked on the jacket ofcoaxial cables that have a temperature rating exceeding 60°C (140°F).

Informational Note: Voltage markings on cables could be misinterpreted to suggest that the cablesmay be suitable for Class 1, electric light, and power applications.

Exception: Voltage markings shall be permitted where the cable has multiple listings and voltage markingis required for one or more of the listings.

(A) Type CATVP.

Type CATVP community antenna television plenum coaxial cables shall be listed as being suitable for usein ducts, plenums, and other spaces used for environmental air and shall also be listed as having adequatefire-resistant and low smoke-producing characteristics.

Informational Note: One method of defining a cable that is low smoke-producing cable andfire-resistant cable is that the cable exhibits a maximum peak optical density of 0.50 or less, anaverage optical density of 0.15 or less, and a maximum flame spread distance of 1.52 m (5 ft) or lesswhen tested in accordance with NFPA 262-2015, Standard Method of Test for Flame Travel andSmoke of Wires and Cables for Use in Air-Handling Spaces.

(B) Type CATVR.

Type CATVR community antenna television riser coaxial cables shall be listed as being suitable for use in avertical run in a shaft or from floor to floor and shall also be listed as having fire-resistant characteristicscapable of preventing the carrying of fire from floor to floor.

Informational Note: One method of defining fire-resistant characteristics capable of preventing thecarrying of fire from floor to floor is that the cables pass the requirements of ANSI/UL1666-2011 2012 , Standard Test for Flame Propagation Height of Electrical and Optical-Fiber CableInstalled Vertically in Shafts.

(C) Type CATV.

Type CATV community antenna television coaxial cables shall be listed as being suitable for general-purpose CATV use, with the exception of risers and plenums, and shall also be listed as being resistant tothe spread of fire.

Informational Note: One method of defining resistant to the spread of fire is that the cables do notspread fire to the top of the tray in the “UL Flame Exposure, Vertical Tray Flame Test” in ANSI/UL1685-2010, Standard for Safety for Vertical-Tray Fire-Propagation and Smoke-Release Test forElectrical and Optical-Fiber Cables. The smoke measurements in the test method are not applicable.

Another method of defining resistant to the spread of fire is for the damage (char length) not toexceed 1.5 m (4 ft 11 in.) when performing the CSA “Vertical Flame Test — Cables in Cable Trays,”as described in CSA C22.2 No. 0.3-09, Test Methods for Electrical Wires and Cables.


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(D) Type CATVX.

Type CATVX limited-use community antenna television coaxial cables shall be listed as being suitable foruse in dwellings and for use in raceways and shall also be listed as being resistant to flame spread.

Informational Note: One method of determining that cable is resistant to flame spread is by testingthe cable to the VW-1 (vertical-wire) flame test in ANSI/UL 1581-2011 2013 , Reference Standard forElectrical Wires, Cables and Flexible Cords.

Table 820.179 Coaxial Cable Markings

Cable Marking Type

CATVP CATV plenum cable

CATVR CATV riser cable

CATV CATV cable

CATVX CATV cable, limited use

Informational Note: Cable types are listed in descending order of fire resistance rating.




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CommitteeStatement:

Documents referenced in informational notes to 820.179(B) and (D) have been updated tothe current edition.

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830.1 Scope.

This article covers network-powered broadband communications systems that provide any combination ofvoice, audio, video, data, and interactive services through a network interface unit.

Informational Note 1 : A typical basic system configuration includes a cable supplying power andbroadband signal to a network interface unit that converts the broadband signal to the componentsignals. Typical cables are coaxial cable with both broadband signal and power on the centerconductor, composite metallic cable with a coaxial member(s) or twisted pair members for thebroadband signal and twisted pair members for power, and composite optical fiber cable with a pairof conductors for power. Larger systems may also include network components such as amplifiersthat require network power.

Informational Note 2: See 90.2(B)(4) for installations of broadband communications systems thatare not covered.




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Committee Statement

CommitteeStatement:

Informational Note No. 2 referencing 90.2(B)(4) should not be deleted. It is extremely important,from a communications-provider point of view, that the reader and user of the Code be remindedthat there are circumstances under which Article 830 does not apply.

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A circuit in such a position that, in case of failure of supports or insulation, contact with another circuit mayresult.

Informational Note: See Part I of Article 100 for two other definitions of Exposed: Exposed (as applied to liveparts) and Exposed (as applied to wiring methods).




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Committee Statement

CommitteeStatement:

The term “exposed” has multiple meanings throughout the NEC: uncovered and capable of beingtouched by persons, susceptible to physical damage, e.g., wiring attached to a surface, susceptibleto power influences such as contact or induction, and susceptible to lightning influences, either adirect ‘hit’, induction or ground potential rise. Hence, the informational note provides clarity and hasbeen maintained.

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Second Revision No. 4548-NFPA 70-2015 [ Section No. 830.44(C) ]

(C) Clearance from Ground.

Overhead (aerial) spans of network-powered broadband communications cables shall conform to not lessthan the following:

(1) 2.9 m (9 1⁄2 ft) — above finished grade, sidewalks, or from any platform or projection from which theymight be reached and accessible to pedestrians only

(2) 3.5 m (11 1⁄2 ft) — over residential property and driveways, and those commercial areas not subject totruck traffic

(3) 4.7 m (15 1⁄2 ft) — over public streets, alleys, roads, parking areas subject to truck traffic, drivewayson other than residential property, and other land traversed by vehicles such as cultivated, grazing,forest, and orchard

Informational Note: These clearances have been specifically chosen to correlate with ANSI/IEEEC2-2012National Electrical Safety Code, Table 232-1, which provides for clearances of wires,conductors, and cables above ground and roadways, rather than using the clearances referenced in225.18. Because Article 800 and Article 820 have had no required clearances, the communicationsindustry has used the clearances from the NESC for their installed cable plant.




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Response Message:

Public Comment No. 52-NFPA 70-2015 [Section No. 830.44(C)]


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(B) Direct-Buried Cables and Raceways.

Direct-buried network-powered broadband communications cables shall be separated by at least 300 mm(12 in.) from conductors of any light, power, non–power-limited fire alarm circuit conductors or Class 1circuit.

Exception No. 1: Direct-buried network-powered broadband communications cables Separation shall notbe required to be separated by at least 300 mm (12 in.) from conductors of any light, power, non–power-limited fire alarm circuit conductors or Class 1 circuit where electric service conductors or network-powered broadband communications cables are installed in raceways or have metal cable armor.

Exception No. 2: Direct-buried network-powered broadband communications cables Separation shallnot be required to be separated by at least 300 mm (12 in.) from conductors of any light, power,non–power-limited fire alarm circuit conductors or Class 1 circuit where electric light or power branch-circuit or feeder conductors, non–power-limited fire alarm circuit conductors, or Class 1 circuit conductorsare installed in a raceway or in metal-sheathed, metal-clad, or Type UF or Type USE cables; or thenetwork-powered broadband communications cables have metal cable armor or are installed in araceway.




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Committee Statement

CommitteeStatement:

The text for both Exceptions 1 and 2 is simplified by stating: “Separation shall not berequired where …..”.

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(3) The power service accessible means external to enclosures using the options identified in theException of 250.94. If an intersystem bonding termination is established, all the rules of 250.94shall apply. (A) Exception .



(6) The grounding electrode conductor or the grounding electrode conductor metal enclosure of thepower service

(7) The grounding electrode conductor or the grounding electrode of a building or structure disconnectingmeans that is connected to an electrode as covered in 250.32


For purposes of this section, the mobile home service equipment or the mobile home disconnecting means,as described in 830.93, shall be considered accessible.







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Committee Statement

CommitteeStatement:

The Panel has reviewed the list items for consistent language and improved consistency byplacing the second sentence of list Item 3 as a requirement outside the list. In list Item 3 the panelrecognizes a change in First Revision that separates 250.94 into two subsections A and B.


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ResponseMessage:

Public Comment No. 1879-NFPA 70-2015 [Section No. 830.100(B)(2)]


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Second Revision No. 4553-NFPA 70-2015 [ Section No. 830.113(I) ]

(I) Other Building Locations.

The following cables shall be permitted to be installed in building locations other than those covered in830.113(B) through (G H ):

(1) Types BLP, BMR, BLR, BM, and BL

(2) Types BLP, BMR, BLR, BM, BL, and BLX installed in a raceway raceways recognized in Chapter 3.

(3) Types BLP, BLR, and BL installed in the following:







(10) Type BLX less than 10 mm ( 3⁄8 in.) in diameter in one- and two-family dwellings

(11) Types BMU and BLU entering the building from outside and run in rigid metal conduit (RMC) orintermediate metal conduit (IMC) where the conduit is connected by a bonding conductor or groundingelectrode conductor in accordance with 830.100(B)

Informational Note: This provision limits the length of Type BLX cable to 15 m (50 ft), while830.90(B) requires that the primary protector, or NIU with integral protection, be located asclose as practicable to the point at which the cable enters the building. Therefore, ininstallations requiring a primary protector, or NIU with integral protection, Type BLX cable maynot be permitted to extend 15 m (50 ft) into the building if it is practicable to place the primaryprotector closer than 15 m (50 ft) to the entrance point.

(12) A maximum length of 15 m (50 ft), within the building, of Type BLX cable entering the building fromoutside and terminating at an NIU or a primary protection location




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Committee Statement

CommitteeStatement:

The revised text clarifies what type of raceways are permitted. The term “raceway” is too generaland may include all types of raceway, e.g., communications raceway. The reference to 830.113(B)through (G) is corrected to 830.113(B) through (H) because a new section 830.113(H) was insertedin the first draft stage.


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ResponseMessage:

Public Comment No. 230-NFPA 70-2015 [Section No. 830.113(I)]


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(2) Other Applications.

Network-powered broadband communications cable shall be separated at least 50 mm (2 in.) fromconductors of any electric light, power, Class 1, and non–power-limited fire alarm circuits.

Exception No. 1: Network-powered broadband communications cable Separation shall not be requiredto be separated at least 50 mm (2 in.) from conductors of any electric light, power, Class 1, andnon–power-limited fire alarm circuits where— either (1 where: (1 ) all of the conductors of electric light,power, Class 1, and non–power-limited fire alarm circuits are in a raceway, or in metal-sheathed,metal-clad, nonmetallic-sheathed, Type AC, or Type UF cables, or (2) all of the network-poweredbroadband communications cables are encased in a raceway.

Exception No. 2: Network-powered broadband communications cable Separation shall not be requiredto be separated at least 50 mm (2 in.) from conductors of any electric light, power, Class 1, andnon–power-limited fire alarm circuits where the network-powered broadband communications cables arepermanently separated from the conductors of electric light, power, Class 1, and non–power-limited firealarm circuits by a continuous and firmly fixed nonconductor, such as porcelain tubes or flexible tubing, inaddition to the insulation on the wire.




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Committee Statement

CommitteeStatement:

The text of Exception Nos. 1 and 2 is simplified by stating “Separation shall not be requiredwhere….” rather than repeating the full text of the introductory paragraph.

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830.154 Applications of Network-Powered Broadband Communications System Cables.


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Permitted and nonpermitted applications of listed network-powered broadband communications systemcables shall be as indicated in Table 830.154(a). The permitted applications shall be subject to theinstallation requirements of 830.40, 830.110, and 830.113. The substitutions for network-poweredbroadband system cables listed in Table 830.154(b) shall be permitted.

Table 830.154(a) Applications of Listed Network-Powered Broadband Cables in Buildings

Applications

Listed Network-Powered BroadbandCable Types

BLP BLR BL BMR BM BLXBMU,BLU

Inducts specifically fabricatedfor environmental air asdescribed in 300.22(B)

In fabricated ducts asdescribed in 300.22(B)

Y* N N N N N N

In metal raceway thatcomplies with 300.22(B)

Y* Y* Y* Y* Y* Y* N

In other spaces used forenvironmental air (plenums)as described in 300.22(C)

In other spaces used forenvironmental air asdescribed in 300.22(C)

Y* N N N N N N

In metal raceway thatcomplies with 300.22(C)

Y* Y* Y* Y* Y* Y* N

In plenum communicationsraceways

Y* N N N N N N

In plenum cable routingassemblies

Y* N N N N N N

Supported by open metalcable trays

Y* N N N N N N

Supported by solid-bottommetal cable trays with solidmetal covers

Y* Y* Y* Y* Y* Y* N

In risers In vertical runs Y* Y* N Y* N N N

In metal raceways Y* Y* Y* Y* Y* Y* N

In fireproof shafts Y* Y* Y* Y* Y* Y* N


Y* Y* N N N N N


Y* Y* N N N N N

In riser communicationsraceways

Y* Y* N N N N N

In riser cable routingassemblies

Y* Y* N N N N N

In one- and two-familydwellings

Y* Y* Y* Y* Y* Y* N

Within buildings in other thanair-handling spaces andrisers

General Y* Y* Y* Y* Y* Y* N

In one- and two-familydwellings

Y* Y* Y* Y* Y* Y* N

Supported by cable trays Y* Y* Y* Y* Y* N N

In rigid metal conduit (RMC)and intermediate metalconduit (IMC)

Y* Y* Y* Y* Y* Y* Y*

In any raceway recognizedin Chapter 3

Y* Y* Y* Y* Y* Y* N


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Applications

Listed Network-Powered BroadbandCable Types

BLP BLR BL BMR BM BLXBMU,BLU


Y* Y* Y* N N N N


Y* Y* Y* N N N N

In riser communicationsraceways

Y* Y* Y* N N N N

In riser cable routingassemblies

Y* Y* Y* N N N N

In general-purposecommunications raceways

Y* Y* Y* N N N N

In general-purpose cablerouting assemblies

Y* Y* Y* N N N N

Note: An “N” in the table indicates that the cable type shall not be permitted to be installed in theapplication. A “Y*” indicates that the cable type shall be permitted to be installed in the application subjectto the limitations described in 830.113.

Informational Note No. 1: Part V of Article 830 covers installation methods within buildings. This tablecovers the applications of listed network-powered broadband communications cables in buildings. Thedefinition of Point of Entrance is in 830.2

Informational Note No. 2: For information on the restrictions to the installation of network-poweredbroadband communications cables in ducts specifically fabricated for environmental air, see 830.113(B).

Table 830.154(b) Cable Substitutions

Cable Type Permitted Cable Substitutions

BM BMR

BLP CMP, CL3P

BLR CMP, CL3P, CMR, CL3R, BLP, BMR

BL CMP, CMR, CM, CMG, CL3P, CL3R, CL3, BMR, BM, BLP, BLR

BLX CMP, CMR, CM, CMG, CMX, CL3P, CL3R, CL3, CL3X, BMR, BM, BLP, BRP, BL




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Committee Statement

CommitteeStatement:

The sentence “The definition of Point of Entrance is in 830.2.” of Informational Note No. 1 to Table830.154(a) is inadvertently struck out in the First Draft. It is only the third sentence that should bestruck as indicated in the First Revision Committee Statement in where it is stated: “It is sufficientthat IN No. 1 direct the reader to the definition in 830.2 thus avoiding potential confusion.”

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Second Revision No. 4571-NFPA 70-2015 [ Section No. 840.3(E) ]

(E) Output Circuits.

As appropriate for the services provided, the output circuits derived from the network terminal shall complywith the requirements of the following:

(1) Installations of communications circuits — Part V of Article 800

(2) Installations of premises (within buildings) community antenna television and radio distributioncircuits — Part V of Article 820

(3) Installations of optical fiber cables — Part V of Article 770

(4) Installations of Class 2 and Class 3 circuits — Part III of Article 725

Informational Note: See 725.121 for information on the classification of informationtechnology equipment circuits.

(5) Installations of power-limited fire alarm circuits — Part III of Article 760




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Committee Statement

CommitteeStatement:

The word “premises” also includes areas outside the building. The requirement of 840.3(E)(2)applies only within buildings and this second revision specifically clarifies this.

ResponseMessage:

Public Comment No. 233-NFPA 70-2015 [Section No. 840.3(E)]


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(B) Above Roofs.

Outside plant optical fiber cables shall have a vertical clearance of not less than 2.5 m (8 ft) from all pointsof roofs above which they pass.

Exception No. 1: Vertical clearance requirements shall not apply to auxiliary buildings, such as garagesand the like.

Exception No. 2: A reduction in clearance above only the overhanging portion of the roof, to not less than450 mm (18 in.), shall be permitted if (a) not more than 1.2 m (4 ft) of premises-powered broadbandcommunications service-drop cable passes above the roof overhang, and (b) the cable is terminated at athrough- or above-the-roof raceway or approved support.


Informational Note: For additional information regarding overhead wires and cables, see ANSI/IEEEC2-2012, National Electrical Safety Code, Part 2, Safety Rules for Overhead Lines.




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840.47 Underground Wires and Cables Entering Buildings.

Underground wires and cables entering buildings shall comply with 840.47(A)(1) through (C).

(A) Optical Fiber Cables.

(1) Class 1 or Non–Power-Limited Fire Alarm Circuits.

Underground conductive optical fiber cables with a non–current-carrying metallic member enteringbuildings with electric light, power, Class 1, or non–power-limited fire alarm circuit conductors in a raceway,handhole enclosure, or manhole shall be located in a section separated from such conductors by means ofbrick, concrete, or tile partitions or by means of a suitable barrier.

(2) Direct-Buried Cables.

Direct-buried conductive optical fiber cables with a non–current-carrying metallic member shall beseparated by at least 300 mm (12 in.) from conductors of any electric light, power, or non–power-limited firealarm circuit conductors or Class 1 circuit.

Exception No. 1: Direct-buried premises-powered broadband communications cables Separation shallnot be required to be separated by at least 300 mm (12 in.) from conductors of any light, power,non–power-limited fire alarm circuit conductors or Class 1 circuit where where the electric serviceconductors are installed in raceways or have metal cable armor.

Exception No. 2: Direct-buried premises-powered broadband communications cables shall not berequired to be separated by at least 300 mm (12 in.) from conductors of any light, power, non–power-limited fire alarm circuit conductors or Class 1 circuit where Separation shall not be required where theelectric light or power branch-circuit or feeder conductors, non–power-limited fire alarm circuit conductors,or Class 1 circuit conductors are installed in a raceway or in metal-sheathed, metal-clad, or Type UF orType USE cables.

(3) Mechanical Protection.

Direct-buried cable, conduit, or other raceway shall be installed to have a minimum cover of 150 mm (6 in.).

(B) Communications Wires and Cables.

Installations of communications wires and multipair communications cables shall comply with 800.47.

(C) Coaxial Cables.

Installations of coaxial cables shall comply with 820.47.




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Committee Statement

CommitteeStatement:

The opening sentence should require compliance with 840.47(A) through (C), not 840.47(A)(1)through (C).

Section 840.47(A)(2) deals with optical fiber cables, not premises powered broadband


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communications cables. The revised text corrects that error and also simplifies the text of theexceptions. “Optical fiber cables with a non-current-carrying metallic member” are conductive opticalfiber cables. The revised text uses “conductive optical fiber cables” instead of “optical fiber cableswith a non-current-carrying metallic member”.

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840.100 Network Terminal and Cable Grounding.

Grounding required for protection of the network terminal,conductive optical fiber cables, multipaircommunications cables, antenna lead-in conductors, and coaxial cables shall comply with 770.100,800.100, 810.21, or 820.100, as applicable.




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Committee Statement

CommitteeStatement:

The title of 840.100 should state “840.100 Network Terminal and Cable Grounding.” It is thenetwork terminal, not the network, that is to be grounded as indicated in the text of 840.100. Theword “terminal” was omitted in the First Draft.

This revision complies with the Correlating Committee directive to reconsider the commentsexpressed in the ballot.

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840.113 Installation Past on the Customer Premises Side of the Network Terminal.

Installation of premises communications circuits and premises coaxial circuits shall comply with840.113(A)or (B) as applicable.

(A) Premises Communications Circuits.

Premises communications wires and multipair cables installed in a building from the network terminal shallbe listed in accordance with 800.179, and the installation shall comply with 800.113 and 800.133.

(B) Premises Community Antenna Television (CATV) Circuits.

Premises CATV coaxial cables installed in a building from the network terminal shall be listed in accordancewith 820.179, and the installation shall comply with 820.113 and 820.133.




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Committee Statement

CommitteeStatement:

The title is revised to identify that it is the customer premises side of the network terminalthat is being addressed.

This revision complies with the Correlating Committee directive to reconsider the commentsexpressed in the First Draft ballot.

ResponseMessage:




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840.170 Equipment and Cables.

Premises-powered broadband communications systems equipment and cables shall comply with840.170(A) through (I H ).

(A) Network Terminal.

The network terminal and applicable grounding means shall be listed for application with premises-poweredbroadband communications systems.

Informational Note No. 1: One way to determine applicable requirements is to refer to ANSI/ UL60950-1-2007 2014 , Standard for Safety of Information Technology Equipment; ANSI/ UL498A-2008 2015 , Current Taps and Adapters; ANSI/ UL 467-2007 2013 , Grounding and BondingEquipment,or ANSI/ UL 62368-1-2014, Audio/Video, Information and Communication TechnologyEquipment – Part 1: Safety Requirements.

Informational Note No. 2: There are no requirements on the network terminal and its groundingmethodologies except for those covered by the listing of the product.

(B) Optical Fiber Cables.

Optical fiber cables shall be listed in accordance with 770.179(A) through (D) and shall be marked inaccordance with Table 770.179.

(C) Communications Equipment.

Communications equipment shall be listed in accordance with 800.170.Premises communications wiresand cables connecting to the ONT network terminal shall be listed in accordance with 800.179.

(D) Cable Routing Assemblies and Communications Raceways

Cable routing assemblies and communications raceways shall be listed in accordance with 800.182.

(E) Premises Communications Wires and Cables.

Communications wires and cable shall be listed and marked in accordance with 800.179.

(F)

Communications Limited-Power Cables

Communications limited-power cables shall be listed as suitable for carrying communications circuits andlimited power circuits as specified in 840.160(C). Communications limited-power cable shall be markedCMP-LP, CMR-LP or CM-LP, as applicable

(G) Premises Community Antenna Television (CATV) Circuits.

Premises community antenna television (CATV) coaxial cables connecting to the network terminal shall belisted in accordance with 820.179. Applicable grounding means shall be listed for application withpremises-powered broadband communications systems.


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(H G ) Power Source.

The power source for circuits intended to provide power over communications cables to remote equipmentshall be limited in accordance with Table 11(B) in Chapter 9 for voltage sources up to 60 V dc and be listedas specified in 840.170(H G )(1) or 840.170(H G )(2):

(1) A power source shall be listed as specified in 725.121(A)(1), (A)(2), (A)(3), or (A)(4). The powersources shall not have the output connections paralleled or otherwise interconnected unless listed forsuch interconnection.

(2) A power source shall be listed as communications equipment for limited-power circuits.

Informational Note: Informational Note: One way to determine applicable requirements is to refer toANSI/UL 60950, Safety of Information Technology Equipment; ANSI/UL 60950 -1-2007 2014 ,Standard for Safety of Information Technology Equipment-Safety-Part 1; or ANSI/UL 62368-1-2014 ,Audio/Video, information and Communication Technology Equipment- Part 1: Safety Requirements.Typically such circuits are used to interconnect equipment for the purpose of exchanging information(data).

(I H ) Accessory Equipment.

Communications accessory equipment and/or assemblies shall be listed for application with premises-powered communications systems.

Informational Note: One way to determine applicable requirements is to refer to ANSI/ UL1863-2004 , Communications-Circuit Accessories.




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Committee Statement

CommitteeStatement:

This revision corrects “ONT” to “network terminal” in (C).

The section for “Communications Limited-Power Cables” has been removed because theapplication was deleted in SR 4564.

This revision deletes the redundant “Informational Note” in the informational note to 840.170(G).The informational note references to UL standards have been updated to the current edition andANSI added as applicable.

ResponseMessage:


Public Comment No. 172-NFPA 70-2015 [Section No. 840.170(F)]







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Second Revision No. 4564-NFPA 70-2015 [ Sections Part VI., 840.160 ]


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Sections Part VI., 840.160

Part VI. Premises Powering of Communications Equipment over Communications Cables

Informational Note: This Part addresses types of circuits intended to provide power over coaxialcables and communications wires and cables to remote equipment, including systems such asPower over Ethernet (PoE). These premises-powering systems do not include circuits such as thosethat provide plain old telephone services (POTS), traditional CATV services, and similar legacycommunications services.

840.160 Powering Circuits.

Communications cables, in addition to carrying the communications circuit, shall also be permitted to carrycircuits for powering communications equipment. The communications cables and the powering circuitsshall comply with 840.160(A), (B), and (C), as applicable.

(A) Power Limitations.

The power circuits shall comply with the requirements of Table 11(B) in Chapter 9 for voltage sources up to60 V dc.

Informational Note: The 100 VA (100 W) power source maximum nameplate rating in Chapter 9,Table 11(B) is the same as the maximum power rating for network-powered broadbandcommunications systems in Table 830.15, the communications industry standard inATIS-0600337.2010, Requirements for Maximum Voltage, Current, and Power Levels in Network-Powered Transport Systems , and UL 6095021, Information Technology Equipment Safety Part 21:Remote Power Feeding .

Table 840.160(A) Communications Conductor Ampacity Based on Copper Conductors at AmbientTemperature of 30°C (86°F), Conductor Temperature 60°C (140°F)

Conductor Size (AWG) Ampacity of Each Conductor in a Single 4-Pair Multipair Communications CableInstalled Separated from All Other Cables Ampacity of Each Conductor in a Multipair CommunicationsCable when More Than One Cable Is Installed Together or the Multipair Cable Is Larger Than 4Pairs 26 0.8 0.4 24 1.3 0.6 23 2 1 22 3.1 1.5

Informational Note: The conductor size of existing communications cable, including “category X”type cables, can be as small as 26 AWG.

(B) Ampacity.

The maximum current carried by each communications conductor shall conform to Table 840.160(A).

Informational Note: The ampacity of the small wire gauges used in communications cables are notincluded in the ampacity tables in Article 310.

(C) Installations of New Cables.

New cables installed for carrying both communications and power, where the maximum adjusted ampacityof conductors exceed the values in Table 840.160(A), shall be Type CMP-LP, CMR-LP, or CM-LP, asapplicable.

(D) Using Cables Without the “LP” Marking for Supplying Premises Power and Communications.

New and existing cables without the “LP” marking shall be permitted to connect to communicationsequipment that supplies communications and power in accordance with the voltage and power limitations ofTable 11(B) in Chapter 9 for voltage sources up to 60 V dc, provided that the maximum current supplied bythe power source is less than the adjusted ampacity of conductors in Table 840.160(A). For ambienttemperatures other that 30°C (86°F) ampacity shall be permitted to be adjusted per Table 310.15(B)(2)(a).

Where the power supplied over a communications cable to communications equipment is greater than 60watts, communication cables and the power circuit shall comply with 725.144 where communicationscables are used in place of Class 2 and Class 3 cables.




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Committee Statement

CommitteeStatement:

The requirements proposed in the First Draft are outside the scope of Chapter 8 as well as thetitle and scope of Article 840. However, wording was added to direct the user to 725.144 for powerdelivery circuits that exceed 60 watts on communications cables.

ResponseMessage:


Public Comment No. 584-NFPA 70-2015 [Part VI.]

Public Comment No. 636-NFPA 70-2015 [Sections Part VI., 840.160]




Public Comment No. 641-NFPA 70-2015 [Section No. 840.160(D)]

Public Comment No. 695-NFPA 70-2015 [Part VI.]









Public Comment No. 744-NFPA 70-2015 [Sections 840.160(C), 840.160(D)]










Public Comment No. 1640-NFPA 70-2015 [Sections Part VI., 840.160]


Public Comment No. 637-NFPA 70-2015 [Section No. 840.160 [Excluding any Sub-Sections]]


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