Insulation tape (including the glass fiber type) is highly flammable and should
not be used in a high-temperature environment. Only insulation tape approved for
high-temperature operation (suitable for continuous operation at 500º
F) should be
used in high-temperature environments.
When are spot ties used?
What is used to install self-clinching cable straps?
What is used to tie wire bundles in high-temperature areas?
In this chapter you have learned some of the basic skills required for proper wiring techniques. We
have discussed conductor splices and terminal connections, basic soldering skills, and lacing and tying
The basic requirement for any splice or terminal connection is that it be both mechanically and
electrically as strong as the conductor or device with which it is to be used.
Insulation RemovalThe first step in splicing or terminating electrical conductors is to remove the
insulation. The preferred method for stripping wire is by use of a wire-stripping tool. The hot-blade
stripper cannot be used on such insulation material as glass braid or asbestos. An alternate method for
stripping copper wire is with a knife. A knife is the required tool to strip aluminum wire. Take extreme
care when stripping aluminum wire. Knicking the strands will cause them to break easily.
Western Union SpliceA simple connection known as the Western Union splice is used to splice
small, solid conductors together. After the splice is made, the ends of the wire are clamped down to
prevent damage to the tape insulation.