The use of structural metal as a grounding electrode is an issue that has been revised during several recent Code cycles. The 2011 NEC has once again revisited the rule explaining when a structural ...
The grounding and bonding rules for buildings or structures supplied by a feeder(s) or branch circuit(s) can be found in Sec. 250.32 of the 2011 NEC. A grounding electrode at a separate building or ...
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