TIG (GTAW). DC pulsed TIG (GTAW-P) Input Power Currently wired for 240V single phase. 300 A at 22 V, 30% duty cycle. Coolmate™ 3S cooler. Three-gallon cooling system features a flow indicator to visually indicate system is working and an external filter to stop objects from entering the water-cooled torch cable for better flow and longer life.