50 Amp Rig to 15A house power.

Thanks so much for all the help, folks. It's an informative thread that may be helpful to lots of folks I think. As it turns out, my crazy brother in law came over a few hours ago & talked me into running a dedicated 50A circuit through my existing breaker box, with him doing most of the work for free. Who could say no to that? So we'll have what looks like a failsafe solution here at home. These other tips should be very useful though if we find ourselves camping in relatives' driveways (as we often have) or in campgrounds lacking 30A and 50A. Again, thanks!

John K