agreed, so many folks ask this same question, but it's not one anyone else can answer but you. YOUR situation and how your use it and how you 'camp' and your expectations and how much 'stuff' you put in it and how often your open the door and how 'low' your set the temperature and whether you want the ice maker to make ice.... etc, etc... you get the idea.
what is your make and model of RV?
what type of fridge do you have?
how many batteries for the House do you have?
what make and model Inverter do you have?
do you have an AGS(automatic generator starter)?
do you have a battery charge/level readout?
you'll not be needing to ever run your generator 24/7 'just because' you have a residential fridge, if that's indeed what you have. most any manufacturer is going to provide at least two 6v deep charge House batteries, even if just for the fridge. Your inverter will take the 12v battery output and turn it into 120v outlet power for the fridge, and even possibly other outlets in your RV. Your generator will charge the batteries when off-grid, but how often and for how long truly is subjective to your situation at the time. None of us have an 'exact' amount of time that a generator runs... it will depend on the usage. Everyone is different. Plus, some of us turn our fridge 'up', or even 'off', during the night.
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