NEC 250.50

[Isaiah]

250.50 states all electrodes must be bonded at each building or structure served. Is this only applicable to the GEC at a service entrance, ie, structure “served”?


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[tom baker]

The requirement would include separate buildings supplied by a feeder

 

[Isaiah]

The requirement would include separate buildings supplied by a feeder

The E&C firm wants to bond every foundation in the entire plant to their buried 4/0 copper loop which is buried 18” deep and is very extensive


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[tom baker]

That bonding is beyond what the NEC requires. The 4/0 is not buried deep enough to be qualify as a ground ring.

 

[Isaiah]

That bonding is beyond what the NEC requires. The 4/0 is not buried deep enough to be qualify as a ground ring.

Agreed. Another costly engineering misinterpretation of NEC


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