It should handle a small refrigerator as those only draw 2-3 amps.
BTW, it would help if you created a signature so when you post something everyone will know what RV you are asking about.
A signature will show up below your post every time
and it helps to have your RV type, make, model, year, etc
so others can better help you.
To edit or add a signature,
click on User CP at the top left of every forum page,
under Settings & Options click on Edit Signature,
make your changes and click on Save Signature.