Something is Wrong Here...

Hi,

I have good friends and neighbors I've been doing handyman work for. Recently they had a water catchment system put in place. We are on the Olympic Peninsula in Washington State in the US. The build for the apartment isn't finished, so the water system isn't in use yet. The tank got very full, and the electrical connection conduit started wicking water to the disconnect at the house. Looking at the whole thing, I'm guessing that the overflow is on a float/pump system, and since it hasn't been energized the tank got too full, and now if we turn it on the breaker immediately trips. We have started by siphoning some water out of the tank. I'll post some pictures and would appreciate any advice please.

Thanks.