I had something new happen to me last night, I've asked two other electricians and they don't have an answer for me either. I had a 3 phase, 4 wire 600 volt splitter, and I needed to power a 347 volt light, while I changed a single phase 120/240 volt x-former to a three phase 120/208. When I turned on the disconnect for the light, the light didn't come on. I checked the voltage and found 120 volts on the phase I was hooked to, I found 780 volts on another phase and over 800 volts on the next phase. I tried to hook the light to a different phase and had the smae results. With no lights hooked up, everything is normal. Has anyone seen this before.
Thanks.
