The generator is 480 volt to a transfer switch, then to a disco, which feeds a step down transformer (step down to 3 phase 208/120 volt) with the neutral coming off the x-o lug of the transformer. The customer wants to refeed an existing panel off the generator panel and abandon the existing feed(when all is ok with the poco feed the generator is on standby, and when they lose power the generator kicks on). my question is this, If I leave the emt connected to the existing panel, will I be creating a hazard(since there will be two ground paths going back to the main switchgear?
