Bruce and John,
Thank you for the links and tips!
I spent a bit of time today studying and digesting...and have come to the conclusion (as all the other good posters already had) that unless I want to spend big money on a large generator, it isn't going to work.
Oh well, not the end of the world, a shade tree feels pretty good too!
This whole exercise (besides learning something new, which is always a good thing) was an effort to cool the trailer while dry camping at old tractor shows and swap meets.
These events are always held on the hottest days of summer, with no power, and little shade.
I attend these things with my vintage car, which is not large enough to haul the big generator needed.
Like many before, I fell for the low dollar, compact, and "perfect for my needs" mini generators that abound on E bay.
It was a fun ride while it lasted, and I've learned much
Thanks to you all!