autecbernie
Member
I have a 3 phase 4 wire transformer feeding a service disconnect panel that supplies 4 buildings. This is all outdoors.The buildings are 200' away and feed through underground PVC.There is a ground rod at the transformer and at each building. Do I have to run a grounding conductor from the transformer to each building or can I just run 3 ungrounded conductors 1 grounded conductor and bond the service panel in each building.This panel supplies 10 apartments