ptonsparky
Tom
- Occupation
- EC - retired
Call today about a GFCI receptacle tripping when a small portable welder was used. These small welders are used about everywhere and never had a problem we know of. When the ground lead was attached to the auger of the grain system the GFCI would trip within a second or two of the arc being struck. Remove the ground lead and attach it to an isolated plate, strike an arc and things are good. The welder was missing the EG prong from the cord...so I put a new cord end on. I had no real hope for that solution but it worked fine. Any one care to explain why?