So I am not electrician and it’s not my thing so this may just sound dumb. But why not just changed the coach over to 50 amp, changing a cord, breaker box and maybe a transfer switch sounds easier then drilling holes that may end of leaking, carrying more cords etc. I am not saying that this would be cheaper but if you ever got to the point where you wanted to run a second AC you would be all set up for that. Once again may be a dumb thought so don’t laugh too hard at the suggestion
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