I purchased a Nikota 3500 from Pep Boys a couple of years ago not realizing it was a center tapped winding which resulted in 12.5 amps X 2 @ 120 volts or 12.5 amps X 1 @ 240 volts. I ended up buying a 5000 watt 2:1 bucking (up/down) tranformer and wi...