I had this reach in freezer that had a voltage drop. It was on a GFCI. 120v. I initially found it when I took a panel off and it shocked me. Turned out a common wire was slightly grounded. Bout 35v from common to ground. I have no idea how it wasn't tripping the thing or the breaker. I unplugged the freezer and ohmed neutral to ground on the GFCI and had continuity. I know the neutral is hooked to ground at the panel but I didn't think meters could pick it up that far. Maybe it was a faulty GFCI too?
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