Yes if you have a 30 to 20/15 amp converter plug. BUT don't run the AC or more than fridge if it is a residential fridge. If it is a gas/electric you might be able to run the microwave or TV. It will also keep up your batteries.
Several posts have mentioned the limits on what you can run off the standard house plug vs. a 30 or 50 amp.
Note that whatever you plug into at your house may also have other things already using part of the 15 or 20 available. A good idea is to use a small voltage readout to check that you aren't starving your systems.
I like this one, cheap, simple and works. About $10 at Amazon
https://www.amazon.com/gp/product/B0...e?ie=UTF8&th=1