This welder generator has a versatile AC and DC weld output, providing quality welds for all types of metals. DC runs smooth and easy while AC Stick is there for when Arc blow occurs. With Accu-Rated 11,000 watts of usable peak power, the Miller Bobcat 250 Welder Generator is perfect for jobs with maximum loads like plasma cutting, Millermatic MIG welders and motor starting.It boasts a large 12-gallon fuel tank allowing it to run for a long time before needing to refuel.