I have also encountered a few things that were not as deenergized as advertised. Things like a SquareD switchboard plug ( not their fault ) where the door interlock was worn down enough to allow the door to be opened with the power on. Bad enough that with a switchboard it is possible to grab the wrong handle and turn off the wrong thing.
During the summer of 1981 I encountered a 3-way switching circuit that had 2 hot wires and 2 neutrals supplying a light bulb. The previous electricians had a devil of a time figuring out how they were getting zero, 120 volts, or 240 volts across the bulb depending on the switch position. This was the circuit that has the common terminals of the 3-way switches connected to the lampholder such that either or both terminals ot the lampholder can be hot.
Remember,
1. paranoia is a survival skill around electrical equipment or any other machine.
2. Electrical equipment contains surprises.
3. Mice like to chew on the wires.
4. Thanks to yellow jackets and snakes, deenergized electrical equipment is still hazardous. over at www dot themeterbuy dot com there are photos of meter sockets from OG+E that have snakes in them. Since snakes do not have perspiration glands they can merely warm themselves up by wrapping thenselves around the 240 volts or 480 volts.
Mike Cole Mike Cole
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