Running Norcold off solar & inverter

300w solar will collect 110AH daily at best, with MPPT and all.
300W fridge will draw 170AH daily at 30% cycle, and more with longer cycle. Forget about it.

As others said, you should better increase the propane storage. If this is a seasonal site, install a permanent tank on the ground, or at least a couple of 100 lb tanks that could be replaced/refilled once every 5-7 weeks.

If you want electrical fridge on non-electrical site - meaning there is no generator daily or every other day - you need either a 12V compressor fridge or VERY energy efficient 120V compressor fridge and twice more solar. Not a 2-way LP fridge. One 300W panel would feed the fridge and another one - your other needs. With a smaller volume compressor fridge, say 5-7 cu.ft, you could go with 400-500W total solar, but then it's a smaller fridge.

The 300 watts is continuous- it is a heating element, though the duty cycle is not 100%. You would be far better off increasing your LP storage, as I do not believe the solar setup would keep up.

phemens wrote:
, the fridge consumes 2.5 A at 120v for 300 watts - is this continuous or peak?

Continuous.. it's either 0 or 300w. Of course, how much time it's actually on will depend on the ambient temperature.

This is going to be a close call. Your 300w of solar won't really be 300w.. more like 240w, and even then only for a few hours/day. And on cloudy days, forget it.

I think if I were you'd I'd test it for a few days and see how it goes. My guess is that it won't make it much past a couple weeks.