Powered by 220V, using power adapter cord can be connected to standard 110V household current. Cutting thickness varies depending on the material. Built-in pre flow function, can isolate the air, arc smoothly, weld more beautiful. Built-in post flow function, effectively provide cooling to extend the working life of consumables. TIG Torch & Plasma Torch.Locate the Ground Clamp with Cable to the Positive Connector (+) on the Welder. Locate the Ground Clamp with Cable to the Positive Connector (-) on the Welder.