I had a thought to run 12 volt. Could have some batteries staying topped off so you could have more amperage when you want it. 14 gauge would probably work for that. Less health hazard. Could also have a small solar panel keeping them topped off during sunny periods. I had friends in the hills who used 12 volt lights and appliances back when - just dispensed with the whole inverter thing which saps energy. I'd bet there's still a good market for those things.

__________________
1986 300SDL, 362K
1984 300D, 138K