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gfci spa tripping

  1. double pole GFCI tripping

    Hi. I would appreciate some help troubleshooting this GFCI problem. In the main inside box there is a 50A two pole GFCI feeding an exterior SPA and nothing else. The control system is a brand new unit from Spadepot. The element is also brand new, 5.5kW @ 220V. Except for the element each part...