sub panel bonded with neutrals

[Jerome W. Young]

this is a sub-panel and has the copper bond attaching the cabinet to the neutral bar. Seems to be the same problem as with grounds and neutrals? The grounding i believe is in the raceway/conduit. no ground wires were present in the cabinet.

[Nick Ostrowski]

No pic Jerome.

[Jerome W. Young]

sorry I though i had one but i didnt. The copper jumper was just connected from the neutral bar to the sub panel cabinet. metal raceways were used to protect the circuits. i didnt know if that changed the rules on bonding grounds and neutrals etc.

[John Arnold]

The metal raceways themselves should be bonded to ground. With the neutral and grounds bonded in that non-service equipment panel, now you have neutral current on the raceways. Neutrals and grounds should only be bonded at the service equipment. Jerry Peck may have some comment regarding submarines...

[Jerry Peck]

Jerry Peck may have some comment regarding submarines...

I was going to ask Jerome if he had a photo of the sub that panel was in, but he said he had no photo. I keep hoping to see a real "sub" panel. :)


Neutrals and grounds should only be bonded at the service equipment.

Correct. Meaning that "bonding jumper" should not go from the neutral terminal bar to the enclosure *at any panel which is not service equipment*.

[Jerome W. Young]

:D , that's damn funny

Thanks!