Continuity

[lmchenry]

In a temporary service would you allow the neutral bar and the equipment grounding bar to be connected by only the metal enclosure or is this a violation of 200.2b? The egc is under a screw on the equipment grounding bar.

 

[Mvillines]

IMHO

Answer to question one is "YES" this is allowed if the panel is bonded according its listing and labeling.

Question two would be a violation to 250.24 (A)(1) and 250.24 (A)(4). The GEC should be connected to the grounded terminal.

 

[mcclary's electrical]

You are in violation. You cannot ust the continuity of the can for a "bond"

 

[Mvillines]

200.2(B) is referencing the continuity of the grounded conductor not the grounding conductor. Using the metallic enclosure for the grounding conductor would not be a violation. Same goes for the metallic raceways or cable armor which can be used as the grounding continuity (conductor) but not for the grounded continuity (conductor).

I agree you cannot use the can for the grounded conductor continuity, But, I read the OP as if the question was asking if it was okay you use the can for the continuity of the grounding bus terminal.

200.2 (B) Continuity. The continuity of a grounded conductor shall not depend on a connection to a metallic enclosure, raceway, or cable armor.?

 

[mcclary's electrical]

I thought he said the GEC was under the grounding screw,,,he actually wrote the EGC was under the ground bar,,,I should have read it closer. I thought his supplemental GEC was under the ground bar would be in violation of 250.28

 

[Mvillines]

After re-reading the op, I see I also misread his question. I now see there is no second question.
His question reminded me of section 250.24, so I guess I posted what I was thinking with no regard to his question. Good lesson for me, I should carefully read the post before responding.