Two disconnects

[mmerino (Michael J. Merino)]

@wblackmon

Mike, I see a bond running from the bushing and landing on the neutral bar. Also, are the KO’s eccentric or are they concentric?

I think they were all concentric. I am not sure, but eccentric would require additional bonding? Can you please explain more on this?

[pabernathy (Paul Abernathy, CMI®, CMECP® Electrical Code Academy,Inc.)]

Ummm… I think I said that and gave references…

[pabernathy (Paul Abernathy, CMI®, CMECP® Electrical Code Academy,Inc.)]

No, only if the KO’s are damaged. Read section 250.92 and 250.96 and you will see the difference in Service Bonding versus Other than Service Bonding.

Also read my post again…

[mmerino (Michael J. Merino)]

@pabernathy

Ummm… I think I said that and gave references…

You didn’t explain hy eccentric or concetric makes a difference. Or at least in terms I understood. I didn’t see any damage to the knockouts.

[rmeier2 (Robert Meier)]

@mmerino

You didn’t explain hy eccentric or concetric makes a difference. Or at least in terms I understood. I didn’t see any damage to the knockouts.

If the KO’s are intact nothing extra is required. Regarding concentric and eccentric from the NEC:

250.97 Bonding for Over 250 Volts. For circuits of over
250 volts to ground, the electrical continuity of metal race-
ways and cables with metal sheaths that contain any con-
ductor other than service conductors shall be ensured by
one or more of the methods specified for services in
250.92(B), except for (B)(1).
Exception: Where oversized, concentric, or eccentric knock-
outs are not encountered, or where a box or enclosure with
concentric or eccentric knockouts is listed to provide a
reliable bonding connection, the following methods shall be
permitted:
(1) Threadless couplings and connectors for cables with
metal sheaths
(2) Two locknuts, on rigid metal conduit or intermediate
metal conduit, one inside and one outside of boxes and
cabinets
(3) Fittings with shoulders that seat firmly against the box
or cabinet, such as electrical metallic tubing connec-
tors, flexible metal conduit connectors, and cable con-
nectors, with one locknut on the inside of boxes and
cabinets
(4) Listed fittings

[pabernathy (Paul Abernathy, CMI®, CMECP® Electrical Code Academy,Inc.)]

Exactly…