30 amp service to 15 amp system

[Maine Sail]

Here is a picture of the Blue Seas breaker I installed about 20 years ago. Surveyors approved of it.
It is wired up to our 30 amp inlet, about a foot away.

Yes that breaker qualified 20 years ago. Today a main ELCI double pole with reverse polarity is required.

 

[Dantheman]

Thanks all. I feel pretty good about what I'll need moving forward, and am also consulting an acquaintance of mine on this install who is a marine electrician.

The only things for which I plan on using the shore power are the air conditioning, fridge and computer. Given that my 5200 btu mermaid A/C unit claims to only draw 4.4 amps, and assuming the computer draws 1 amp as a conservative estimate, I'm thinking I won't have a problem with the fridge, even if all 3 are going at the same time. If anyone disagrees feel free to say so.