I can't say I've ever heard of this before??? If I had any inkling that something might be energized like this,(signs of arcing around conduit entries/fittings etc..) first thing I'd do is a hotstick test for EMF... then wiggy the metal to ground to see if stray voltage is present... Although if you were wearing proper gloves, you couldn't do the "back of the hand" trick.... You wouldn't have to [Linked Image]

-Randy