WHEN two electric wires are joined together, the joint formed is normally called a splice. A good splice should not only be mechanically secure, it inust also form an electrical connection which is just as efficient a conductor as the wire itself.
Depending on the techniques used in twisting or tying the wires together, there are three tes of splices commonly used in household wiring and repair jobs: the pigtail splice the Western Union splice, and the tap splice (also called a branch splice).
The pigtail splice is most often used when wires are joined inside an electrical outlet box, or inside a junction bo where wires come together in an electrical appliance. It is the quickest and easiest of all splices to make, but it is never used where there may be stress or strain put on the connection later on.
The Western Union splice is used wherever two lengths of wire are to be joined end‐to‐end. and it is particularly designed for those jobs where there is a likelihood of strain or pull being applied to the wires after the joint had been made. It is aiso ine correct splice to be used when lengthening extension cords, lamp cords and other appliance cords by adding a piece to one end.
The tap or branch splice is used whenever a second wire must be connected at right angles, or when a wire must be tapped into a continuous main wire. This type of splice is not to be used where a considerable amount of stress or strain will be applied to the tapped wire though its strength will be considerably increased if the splice is soldered when complete (as described later on).
To make good electrical contact at the splice, wires must first be stripped of insulant on to expose the bare metal on the inside. For most splices, anywhere from one to three inches of wire will have to be bared. An ordinary sharp knife will prove to be the handiest tool for this job, but care shouid de exercised to avoid nicking or cutting into the metal wire when stripping off the insulation. The best way to avoid this danger is to remove the insulation by cutting at an angle with the knife — much like a pencil is sharpened. Cutting into the insulation at right angles to the wire increases the danger of nicking, and may eventually result in causing a break at this point.
WHEN two electric wires are joined together, the joint formed is normally called a splice. A good splice should not only be mechanically secure, it inust also form an electrical connection which is just as efficient a conductor as the wire itself.
Depending on the techniques used in twisting or tying the wires together, there are three tes of splices commonly used in household wiring and repair jobs: the pigtail splice the Western Union splice, and the tap splice (also called a branch splice).
The pigtail splice is most often used when wires are joined inside an electrical outlet box, or inside a junction bo where wires come together in an electrical appliance. It is the quickest and easiest of all splices to make, but it is never used where there may be stress or strain put on the connection later on.
The Western Union splice is used wherever two lengths of wire are to be joined end‐to‐end. and it is particularly designed for those jobs where there is a likelihood of strain or pull being applied to the wires after the joint had been made. It is aiso ine correct splice to be used when lengthening extension cords, lamp cords and other appliance cords by adding a piece to one end.
The tap or branch splice is used whenever a second wire must be connected at right angles, or when a wire must be tapped into a continuous main wire. This type of splice is not to be used where a considerable amount of stress or strain will be applied to the tapped wire though its strength will be considerably increased if the splice is soldered when complete (as described later on).
To make good electrical contact at the splice, wires must first be stripped of insulant on to expose the bare metal on the inside. For most splices, anywhere from one to three inches of wire will have to be bared. An ordinary sharp knife will prove to be the handiest tool for this job, but care shouid de exercised to avoid nicking or cutting into the metal wire when stripping off the insulation. The best way to avoid this danger is to remove the insulation by cutting at an angle with the knife — much like a pencil is sharpened. Cutting into the insulation at right angles to the wire increases the danger of nicking, and may eventually result in causing a break at this point.
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