Which is exactly what I was getting at.
I was once shocked by the return path of 277v circuit. I was young, hungover from the night before, and mounting an exit sign to a suspended ceiling. The design of the sign called for mounting the canopy first, then wiring it, then finally attaching the body of the sign to the canopy. The stripped back THHN wire made contact with my elbow and knocked me off the ladder. I'll never forget it.
