I have a transformer, from a resistance welder, that I am about to deep six if nobody wants it. It listed as 770 volts at 9.2 amps output. The input is listed as 440 but with the quantity of unmarked leads, it may also have 220 in. Its <1 square foot but it is VERY heavy and free to whomever wants to haul it. JR Linden K7PUR Cave Creek, AZ