>>In the bathroom, there was a 3-way switch wired as a single-pole, going to the light. The installer must have known that there is supposed to be a ground screw on the switch, so the bare wire of the NM cable was wired to the unused traveller terminal!
Since the feed was from k&t, the ground wire went nowhere, and was randomly energized whenever the light was off!<<
saw that myself once on a service call on an outside light.. the tenant complained of recieving a shock when she touched the light barefoot after hosing off the patio (!!) I never would have believed it had I not seen it with my own eyes...
