"Prevent tangled wires:"
When pulling stranded THHN wire off of several spools in tandem on 1/2-inch EMT, all spools tend to rotate at the same speed. The problem occurs when the pulling stops; the momentum of the spools varies and excess wire gets tangled. With different amounts of wire on each spool, the spool with least amount of wire controls the speed of the lot. This makes the spools with the more wire rotate too fast. The uncoiling excess wire gets tangled and binds up the ring.
To avoid this place, the spools on the pipe so they unroll in opposite directions. They will stop immediately when the pulling stops, and this allows each spool to unroll at the exact speed necessary to keep the wires taut. There will be a slight increase in friction on the pull, but it is a little to put up with compared to avoiding the aggravation of untangling wire.
If you have any Tricks of the Trade you would like to add or if you have any comments please feel free to Email E.T.E..
Tricks of Trade
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