RvFNG76,
A 125w refer is going to draw roughly 1 amp on 120vac. That will be 12 amps on a 12vdc source and that is not even counting the draw of the converter. And remember the refer has to run 24hrs so at night it has to run only on battery power. For 8 hrs of darkness you would need 12amps x 8hrs = 96 amp hrs of battery power.
For a 120 amp hr battery you can only use half of that without damaging it. So you only get 60 amp hrs. But to charge the batteries back up you need to double the number of batteries since the refer draw continues even when the solar panels are charging. And I haven't even counted all the other battery draws.
The are reasons RVs come with gas refers.
