To any who can help, I have found a portable welder that runs off of 15A or 20A circuit breaker. But I don't know if this welder will work for what I want. The welder its self can run off of a 15A breaker using a special type welding rod. Or it can run off of a 20A breaker using standard type welding rods. The input voltage is 115V, output is 10A-70A-at-6V. Does anyone know if this type of welder will work to limit my potential transformer? Chris