Join Date: Feb 2010
Location: Narragansett Bay
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Re: circuit breakers
Welcome aboard, Mike,
Swapping out a breaker is not heavy lifting, if you understand what is going on back there. If you don't and cross wires, you can cause serious trouble. Electrical fires are the most common boat fires. Way more than engines, gasoline, propane, etc. Further, when dealing with shorepower 110v, you're dealing with deadly current around water. Be very careful.
Personally, I understand AC current much better than DC (particularly battery charging as another thread has discussed). I'm a capable crimper, have the right tools, and use the right parts. I still want a pro to check what I've done or clearly advise me. I too ask around here for input, but always use that input to have an informed discussion about the problem with a local pro or supplier.
Airpax is still around, so I'm surprised you can't source a suitable replacement. What makes you believe it's the main breaker that has failed?
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In the harsh marine environment, something is always in need of repair. Margaritas fix everything.