If someone could help!!! Got two different boat docks with the same problem..One has a 120 volt line run to apole at the water edge and a GFI receptacle at the pole to connect the dock wiring.. The other has a 240 volt line run to a 2 circuit w/main breker panel and then a GFI breaker supplying the dock power...AT times when someone is in the water an touches the metal dock platform they receive a "tingle". Bothe docks have been checked for correct polarity, have been grounded, and the GFI circuits never trip. Does anyone have a solution Thanks Virgil