instructions for cutting, splicing and connecting wires - copy
TRANSCRIPT
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7/29/2019 Instructions for Cutting, Splicing and Connecting Wires - Copy
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INSTRUCTIONS FOR CUTTING,
SPLICING AND CONNECTING WIRES
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DEFINITION:
JOINING THE EDGE OF TWO SEPARATE WIRE TOGETHER ISKNOWN AS SPLICE.
JOINING A WIRE AT RIGHT ANGLES TO A CONTINOUS WIRE IS
CALLED A TAP
TO MAKE SPLICES AND TAPS AS STRONG AS A CONTINOUS PIECE
OF WIRE, THE JOB MUST BE DONE CAREFULLY OR THROUGHLY...
OTHERWISE, TROUBLE WILL RESULT.
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IN JOINING TWO OR MORE WIRES, A GOOD
CONNECTION MUST MEET TWO REQUIREMENTS:
1. WIRES MUST BE BRIGHT AND CLEAN WHEN
BROUGHT TOGETHER
2. CONNECTION MUST BE TIGHT, WELL FASTENED
WITH SOLDER OR SOLDERLESS CONNECTORS AND
COVERED WITH TAPE SO THAT IT IS AS WELL
INSULATED AS IT WAS BEFORE ORIGINALINSULATION WAS REMOVED
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CUTTING WIRE:
REMOVE INSULATION BY CUTTING AT A SLANT- AS INSHARPENING A PENCIL. EXPOSED INCH OF COPPER
CONDUCTOR. REMOVED ALL PARTS OF INSULATION
BUT NOT TIN COATING, WHICH MAKES SOLDERING
EASY.
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COMBINATION WIRE CUTTER AND STRIPPER MAKES A HANDY
TOOL THAT CUTS AND STRIPS CLEAN ALL POPULAR SIZES OF
SOLID OR STRANDED COPPER WIRES. USE ALSO FOR LOOPING
WIRES UNDER SCREWS.
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FIVE TYPES OF WIRE CUTTER:
1. LINEMANS WIRE CUTTER
Also called "combination pliers," the lineman's pliers are
made with both a gripping surface and a cutting edge. This
type of pliers has a universal use of gripping small objects
and is used by most electricians because of their insulated
handles that reduce the risk of moderate shock. The pliers'metal components are usually made from high grade steel,
but the rubberized grips are usually worn out quickly under
daily use.
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2. LOCKING WIRE CUTTERS
Carpenters use a lot of locking wire cutters. As the name rightly
suggests, these wire cutters have an edge over other normal ones
. These cutters come with a unique feature which acts like a lock.
These wire cutters or pliers have knob situated on their handle.
This knob acts like a lock and can be tightened and loosened as
per requirement. This is a user friendly feature as carpenters geta better grip of the wire or metal sheet thanks to this wire cutter
lock.
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3. NEEDLE NOSE WIRE CUTTER:
A needle nosed wire cutter gets its name from the way its
cutter is shaped. They have sharp edged cutters that are thin
and narrow. Hence, they are used by carpenters to cut fine
wires. Moreover , their slenderness makes them more usable
in a cluttered space. These wire cutters also have insulated
grips that can protect the carpenters from minor shocks.
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4. DIAGONAL CUTTING WIRE CUTTERS:
As the name suggests, these wire cutters have diagonal shaped
edges. These are used by both carpenters as well as electricians.To ensure the safety of the worker, you get diagonal cutting wire
cutters with insulated handles.
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5. ROUND NOSE WIRE CUTTER:
Not all cutters can be used to bend wires. The round nose wire
cutters have round shaped edges that taper towards the point
where both the edges meet. These round nose wire cutters are
used by both electricians as well as carpenters. These come to use
for cutting or bending wires and thin strips of metal.
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CONNECTIONS AT SCREW TERMINALS:
BEND END METAL WIRE INTO A LOOP TO FIT AROUND A SCREW.
BE SURE TO ATTACH LOOP IN DIRECTION IN WHICH SCREW
TURNS WHEN TIGHTENING AS ILLUSTRATED BELOW.
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SPLICING WIRES TOGETHER:
REMOVE ABOUT 3 INCHES OF INSULATION FROM EACH WIRE AND
CROSS WIRES ABOUT 1 INCH FROM INSULATION; MAKE 6 TO 8
TURNS USING FINGERS AND PLIERS.
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TAP SPLICES:
FOR CONNECTING THE END OF ONE WIRE AT A POINT ON A
CONTINOUS WIRE. USE ONLY IF THERE IS NO PULL ON TAPPED
WIRE. BARE AND CLEAN THE TAP WIRE, THEN WRAP AROUND
CONTONOUS WIRE. SOLDER AND TAPE.
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DIPPING WIRES:
EXCEPT WHERE SOLDERLESS CONNECTORS CAN BE USED, ALL
SPLICES AND TAPS MUST BE SOLDERED. A SOLDERING DIPPER IS
CONVENIENT FOR PIGTAIL JOINTS. APPLY SOLDER PASTE AND DIP
WIRES INTO POT.
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APPLYING SOLDER:
SO SOLDER WILL FLOW EASIER, FIRST COAT WITH ELECTRICAL
SOLDERING PASTE. WITH SOLDERING IRON, HEAT WIRES
ENOUGH FOR SOLDER TO MELT INTO EVERY CREVICE WHEN
TOUCHED TO THEM.
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TAPING:
AFTER WIRES ARE SOLDERED THEY MUST BE INSULATED. FIRST,
WRAP JOINTS WITH RUBBER TAPE, THEN COVER WITH FRICTION
TAPE. IF WIRES ARE NOT RUBBER COVERED, APPLY ONLY LAYERS
OF FRICTION TAPE.
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RUBBER TAPE FRICTION TAPE
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PLASTIC TAPE DOES FASTER, NEATER, CLEANER JOB. EASIER TO
HANDLE, TAKES LESS SPACE IN SWITCH BOXES. DOES THE WORK
OF BOTH RUBBER AND FRICTION TAPE, WATER-PROOF, ACID-
PROOF.
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SOLDERLESS CONNECTORS ELIMINATE THE NEED FOR SOLDERING
JOINTS. MADE OF INSULATING MATERIAL SO WIRES NEED NOT BE
TAPED-SHORT CIRCUITS CANNOT OCCUR. SIMPLY SCREW THE
CONNECTOR OVER WIRES AS SHOWN.
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ON RUNS TO OUTBUILDINGS AND ON POWER FEED LINES USE
SOLDERLESS CONNECTORS. USE TYPE A FOR TAPPING AN
EXISTING LINE WHERE THERE IS STRAIN ON WIRES. USE TYPE B
FOR ALL SERVICE ENTRANCE CONNECTIONS AND INSULATE WITHPLASTIC TAPE.