Grounding seperate structure

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matt_mackay

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Zion National Park, Utah
Hi all,
Just wanted to make sure I'm correct in my thinking.
I have a main distribution panel on a pole outside next to the meter. Conduit run from that panel to a building approx. 30' away to a fused disconnect on the outside of the building. From there conduit run to a distribution panel inside the building feeding lights, receps, etc. They ran 4 conductors ( 2 hots, 1 neutral, and 1 ground from the panel on the pole to the disconnect and then to the panel inside the building. My question: shouldn't there be a ground rod or a ufer installed at the disconnect located on the building?
 
Yes there should be a rod or electrode at the building and it should be connected to the egc in the first panel.
 
How many circuits are at the separate structure? Two circuits fed from a MWBC would not require a GES.
 
infinity said:
How many circuits are at the separate structure? Two circuits fed from a MWBC would not require a GES.
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That is true but the OP has a feeder going to a panel. Just to clarify to the OP, even if there are only 2 circuits there must be a GEC.
 
Dennis Alwon said:
That is true but the OP has a feeder going to a panel. Just to clarify to the OP, even if there are only 2 circuits there must be a GEC.
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Isn't a MWBC considered one circuit in this application therefore a GES is not required?
 
Dennis Alwon said:
Agreed but the OP says it is feeding a panel thus it is a feeder. Once the conductors are feeders than the MWBC exception no longer plays a part.
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Dennis, we're keeping you (and others) busy this week explaining the MWBC vs feeder rule. You all put me in my place the other day about that and I haven't moved since!:lol:
 
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