Sub panel grounding
#1
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Sub panel grounding
Hi,
I have a question regarding sub panel grounding.
I have a 200 amp panel on my service pole, it has feed through lugs which feed a 200 amp panel in my home. The outdoor panel is grounded at it's location and the indoor panel is seperately grounded at it's location. Since it is really a sub panel, the ground and neutrals will be seperated. My question is; do I have to have a ground wire between the two panels since they are each grounded at their locations?
Thanks,
Joe
I have a question regarding sub panel grounding.
I have a 200 amp panel on my service pole, it has feed through lugs which feed a 200 amp panel in my home. The outdoor panel is grounded at it's location and the indoor panel is seperately grounded at it's location. Since it is really a sub panel, the ground and neutrals will be seperated. My question is; do I have to have a ground wire between the two panels since they are each grounded at their locations?
Thanks,
Joe
#2
It depends on which version of the electrical code your municipality follows and possibly also depends on the policies of your local power company.
You can't go wrong with the four-wire feeder, however the three-wire feeder may be allowed under certain circumstances.
You can't go wrong with the four-wire feeder, however the three-wire feeder may be allowed under certain circumstances.