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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Interference from TIG arc starter
Hi. I recently bought a funny old TIG welder on craigslist. It is a
small AC buzzbox connected to a Power Kraft arc starter (made by 21st Century). I tried it out, and it kind of works, but it creates a lot of interference. I figured that it might be bad for TV watching or radio reception, but it is much worse. If it is plugged into a GFI outlet, the GFI trips after a few seconds of operation. If it is plugged into a non-GFI outlet, it makes any fluorescent lights plugged into that outlet flash and flicker. Also, it will still trip the GFI outlet, if there is a power cord plugged into it (doesn't have to be on). Now I can understand why they don't let you plug unknown loads into hospital outlets. Too risky with the nuisance trips. I tried installing a line filter between the line and the HV transformer in the arc starter box, and it does not help. Does this mean that the arc starter is radiating power from the leads? I also tried grounding my welding table, but this does not seem to help either. I guess it is possible to use the non-GFI outlet, but then lighting is a problem. Any way around the pesky GFI trips and light flashing problems? Would it be better to put chokes on the HV side? |
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