You may not want to spend the money
but Magnum makes a 120/240 inverter
in a single
box. Pure sine wave and 24 volt is one option. I use one on 48 volts. You don't have to stack boxes to get 240 volt. You can stack to get higher output. If I want, I can run my 50 gallon house water
heater with it and still have power for a 2 door frig, freezer
and lights. I run my 240v anchor winch
and other equipment
in lieu of running a generator
or having a generator
on one of my mains.
If it works, I attached a pdf.