When untwisting long lengths of metal-clad cable conductors, try the following technique using a variable speed, reversible drill motor and a roll of tape: Tape up three inches or more of the end of the conductors, then chuck the taped end up in the drill motor and tighten securely. With drill motor in hand, move away from the distribution center until the conductors are straight with little or no belly in them. Make sure the drill is in reverse, and then hit the trigger. The wires will appear to dance as they untwist with great speed and little effort. Simply let go of the trigger when the wires are straight.