Looking at a sub-panel installation the otherday, that had a uni-strut frame for support, bolted to a concrete garage floor.

The panel is grounded to the main properly, but would the metal frame be considered an unintentinal alternate path to ground?

Any comments on this?

Having seen a short clear on equipment bolted to a floor once, through the bolt, made me think of this. (Not properly grounded)


Mark Heller
"Well - I oughta....." -Jackie Gleason