Does anyone know of
> inverters that take MFS's -48dc (with what I'm told is
> 'positive-ground' power) and convert it to 110vac?
Yes, such equipment is readily available. Even telcos have *some* AC
equipment! Check the yellow pages under Electronics; there's likely a
local company that carries that stuff surplus. Also, you can check
with your LXC to find out where they get equipment of that type.
This is from memory, but I believe Lorain makes such equipment.