[jeffba]

Originally Posted by Carl n Susan

First of all, my freezer stays frozen when traveling with out connecting to an inverter. But here is how I would do what you want. The inverter usually has two 120V output plugs. Keystone uses on to run the refer. I would intercept the washer/dryer circuit (near the breaker box?), extend it and add a 120V plug, and plug it into the second outlet on the inverter.

What Carl said, but add a transfer switch to allow it to be run on shore power.

You may also want to add to your battery bank.