Just to close the loop in hopes of saving others some aggravation. On a 2005 H33 the Shore Power Breaker is in Port side large locker… stern side of locker in a small nook beneath the light fixture. A worst spot, they could not find… especially since I now must rewire the load side plus a new breaker since breaker failed and fried electric line.
View attachment 226839View attachment 226840. Next advice I need is running a new wire from that spot to AC Panel… I suspect I will find lots of info on that by searching prior posts.
First: I would cut the wire ends off and see if the wires are corroded. If they are not there is no reason to replace the wires.
Second: The connectors that were used are no good. Because of the potential load on these wires, the connectors should be crimped with a hydraulic crimp tool or a high quality mechanical crimper capable of making a very tight connection with no space around the wire after it is crimped. In my experience hydraulic is the way to go. After crimping adhesive shrink wrap should cover the entire crimped connection to prevent moisture penetration.
Third: There looks like signs of water in the area. This is evident by the green corrosion on the connections, the mounting plate for the circuit breaker, and the gunk that seems to be along the seam in the breaker itself. Two things could be done to solve that. Find the leak and fix it or relocate the breaker to a known location in the boat that is dry. I would suggest the main AC panel.
Fourth: If you are not experienced working on boat electrical systems you should hire a professional to do the work, as bad things can happen when connections such as the ones you have shown are put in place on a boat. Some of the bad things that can and do happen are life-threatening to you and your passengers. Besides that the tools to do the work that I suggest may cost nearly as much as hiring a pro.