Quote:
Duncan,
Our water cooled torches will not stand up to use very long at amps above 100. I have and others have tried it over that, with rapid failure. They are made differently as the bare cable inside the torch water line will get hot and melt through without cooling. This type cable is designed for water or gas flowing through the whip to cool it. The air cooled torch has a solid line or cable on ours with a much larger diameter cable that is sheathed just like a welding cable, with a separate gas line. The larger diameter of the cable makes less heat as it carries the current. The inside cable on the water cooled torch is indeed small and it won't support 200 amp welding but for a limited time before the cable gets warm and melts into the the surrounding hose.