mrblue1482
Member
Ive been asked to do a build out for a machine shop. The building has a 3ph 480v wye system. Since most of the equipment is 3ph 230v, so the electrical engineer designed the job with a 480v to 230v transformer (delta to delta). Does this system need to be grounded? If so, how can I do that without an xo terminal? As of right now I have everything bonded throughout. Thanks