Situation:
-No 480V 3 Phase Available in location
-only 120/208 coming from 12K XFMR
-Need 480V 3 Phase for new motors being installed
I have a 208V 3 Phase (Wye)/ 480V (Delta) XFMR which I am feeding in reverse to achieve 480V. Electrician I'm working with says that there is no phase to ground on the 480V side (now secondary). Shouldn't he have a ground reference if he is hooked up to the center tap of the primary (208 V) side of the XFMR?
My question is how do achieve a ground (phase to ground) on the 480 side in my situation.
The 120/208 side is properly bonded/referenced (center tapp bonded to ground)
