Blown marina main

[Northern michigan]

I just bought a 320 sundancer 2007. I just got it to my marina and when I plug it into shore power and turn on any of the breakers on the boat the breaker in the marina office blows. The gfci on the pedestal does not.

I have tried a different power cord and the pedestal next to mine with the same result. The dock has been having electrical issues with the high water.

Any idea if this is my boat or the marina? Everything works fine when on my generator.

 

[Gofirstclass]

OK, I am certainly not an electrician but my boat has done the same thing in some marinas. It has something to do with the ground on your boat not being compatible with the relatively new wiring in the marina. This changed a few years ago.

My boat works fine in my marina and many that I've traveled to. Not at all in others.

 

[Northern michigan]

The marina is saying they installed marine guard last year. Has anyone dealt with this issue before?