I have a fairly old house, and the main breaker panel was full, so we installed a "Spa Kit", which was basically a seperate box with a 50-amp dual pole GFI breaker already included. This runs to a 60-amp disconnect outside, about 10 feet from the tub, and then there is about 20-feet or so of remaining wire for the install.
Everything seems fine right now, until I throw the disconnect on, at which point it arcs at the main GFI in the house and trips the breaker and disconnect hard.
The hook-up seems pretty straight-forward, and I'm not sure what could be causing this. The bare end for the tub has been splayed apart a bit to make sure that the ends aren't touching. Is this happening because I'm not "terminating" the grounding wire at the tub yet??