footer grounding

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steven baker said:
if you have a 400 amp service and the olny grounding method is a footer ground what size ground do you need.
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250.66(B).

I see your an Inspector. Is this a trick question?:smile:

Welcome to the forum.
 
steven baker said:
if you have a 400 amp service and the olny grounding method is a footer ground what size ground do you need.
Click to expand...

400 amp or 4000 amp service, the largest conductor size required to a concrete encased electrode will be a 4 AWG CU even if that is the only electrode available.
 
steven baker said:
if you have a 400 amp service and the olny grounding method is a footer ground what size ground do you need.
Click to expand...
It would depend on your how your ervice is installed. Generally it is as simple as T250.66 (#2 copper) but Note #2 can come into play

Edit: Sorry I was thinking water pipes.

Ground rods #6 Ufer #4
 
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Footer ground. That is a new one for me. I see a lot of different terms from around the country on this forum. We are talking about an ufer or concrete encased electrode, right?
 
mistermudd said:
Footer ground. That is a new one for me. I see a lot of different terms from around the country on this forum. We are talking about an ufer or concrete encased electrode, right?
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Yes, a footer or footing ground is a CEE.
 
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