It's been a long time since the college electronics labs, but would it be feasable to:
Take 2 or 3 of the el'chepo DC to 110Vac power inverters, wire them each into a 1:1 AC isolation Xformer. The wire the AC isolation outputs in parallel. Connect it all up into a GFI outlet with a 15A breaker to get a higher output current rate?
Thanks everyone for any input, and even reading this...
JJ