I wanted to see if I could get some kind of input on this issue at hand. I have two Electrical control panel which powers two UV Systems. The incoming Power is 120 VAC with each Panel on its own breaker of 20 AMPS. The transformer, which was provided by others, has a Primary Voltage of 480 and has three leads of 120 VAC on the Secondary. Recently we had swapped out the ballast which caused the Breakers to trip due to Higher Amp draw from the ballast. So we reverted to the old ballast that had been initially on the panel. Two weeks later The transformer blew one leg on the Secondary Voltage. So what my question is if the panels are protected by, two things, a fuse in the Panel and a Circuit Breaker, how could the UV Panel have caused the transformer to burn out if it's protected? |