The welder he’s working from in this project uses low-voltage alternating current to drive the welding process, but since a plasma cutter ionizes gas it needs high-voltage direct current.

Multivoltage plugs have been added to Miller Electric's Maxstar 150 TIG/Stick welder, enabling it to connect to 115- and 230-Volt receptacles. Related To: Miller Electric Mfg. Co. Multivoltage plugs ...