Confused about wiring my Recent Purchase
Good evening guys and I hope you all can help me. I have gleaned a wealth of knowledge so far but have come here for the advice from people that know RV's. Story .... Moving into an RV for 4 mo...
Forum Discussion
enblethen, I refer you to 250-24(a) in the 1996 NEC. It's the only older version I have handy but judging by the OP's description of this building I suspect it's at least that old.
"When two or more building or structures are supplied from a common ac service, the grounded system in each building or structure shall have a grounding electrode as described in Part H connected to the metal enclosure of the building or structure disconnecting means and to the ac system grounded circuit conductor on the supply side of the building or structure disconnecting means."
If this were not the case then any ground fault in the second building would rely on the earth for a path back to the main service grounding electrode and thus back to the utility transformer. Not only is it unlikely that this path would conduct enough current to activate the over current protection and clear the fault it would violate 250-51
"When two or more building or structures are supplied from a common ac service, the grounded system in each building or structure shall have a grounding electrode as described in Part H connected to the metal enclosure of the building or structure disconnecting means and to the ac system grounded circuit conductor on the supply side of the building or structure disconnecting means."
If this were not the case then any ground fault in the second building would rely on the earth for a path back to the main service grounding electrode and thus back to the utility transformer. Not only is it unlikely that this path would conduct enough current to activate the over current protection and clear the fault it would violate 250-51
