instructions for cutting, splicing and connecting wires - copy

7/29/2019 Instructions for Cutting, Splicing and Connecting Wires - Copy

1/20

INSTRUCTIONS FOR CUTTING,

SPLICING AND CONNECTING WIRES


2/20

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.


3/20

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


4/20

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.


5/20

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.


6/20

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.


7/20

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.


8/20

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.


9/20

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.


10/20

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.


11/20

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.


12/20

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.


13/20

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.


14/20

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.


15/20

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.


16/20

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.


17/20

RUBBER TAPE FRICTION TAPE


18/20

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.


19/20

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.


20/20

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.

instructions for cutting, splicing and connecting wires - copy

Documents