Hi Chaps Slight problem. Just been called to an Isolator with burnt out earth. 3 phase no neutral 32 amp. Running a weld set. I told customer set had fault. He is adamant the set has been tested. Any ideas
Seen this before after the welder had forgotten to attach the return cable to the drill stand he was welding on & the current flowed through the CPC of the drill
It’s still part of the return path if they don’t adequately attach the return earth lead to what they’re welding.