ARC Welding Machine, 250 Amp, IGBT Welding Machine Electric 50Hz-60Hz 100V/200VARC Welding Machine is easy to use for both personal and commercial use. Supports dual input voltage of 110 (120) V and 220 (230) ±15%V. Can be used continuously all day.Energy saving and can be used on a variety of iron products, including carbon steel and alloy steel.