Common Joints and Splices

 

Kinds of Splices and Joints SPLICES

DESCRIPTION

Western union short tie

A wire splice widely used or applied inside to building. This splice is applied only to small solid wire.

Western union long tie  tie 

A splice which is similar to a western union short tie, only that the number of twist at the center and at both end are more compare to a short tie.

Duplex Wire Splice  Splice 

A wire splice used in joining wires in parallel.

Britannia

This splice in applied in both inside and outside the building to big solid wire where twisting is difficult.

A splice similar in appearance with Scarfed Splice

Ordinary wrapped cable splice

that of Britannia only that its end is hidden.

A splice used in joining through conductors that are stranded. This kind of splice is applied in the absence of the connectors.

ILLUSTRATION

 

Plain tap or tee joint

This is mostly used in outside work for joining a tap wire to a through conductor.

Small aerial tap joint

A join mostly used in location where wires are subjected to considerable movement.

Knotted or loop tap joint

This is mostly used for tapping a temporary wiring or lightning system where soldering is not applied.

Ordinary cable tap joint  joint 

This is generally used where large stranded wires are tap to a main or through conductor.

Wrapped tap or tee joint

This is used in large solid conduct where it is found difficult to wrap the large tap wire around the main wire.

Split cable tap or tee  joint    joint

This is most frequently used where small stranded wire or cable are tap to a through conductor.

Ordinary cross joint

This is used where two tap conductors are to extend away from f rom the branch conductor in opposite direction.

Double wrapped cross  jointt   join

This is used in the same manner and reason as the ordinary cross join with the advantage of being stronger.

 

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Rat Tail joint

A wire splice mostly used in outlet and junction boxes.

Through Fixture Joint

This is used where fixture leads are connected to branch wire at an immediate point.

Terminating Fixture  Fixture 

This is used where fixture leads are  joining to the end of the branch or conductor.

Underwriters’ knot 

In making up a drop cord, tie an underwriters knot at the top so that the weight is supported not by the copper conductors where they are connected to the terminals, but by the knot.