[camp guy]

I was the poster who mentioned the generator, and you are correct about a generator equating to a fuel source. Propane is a very popular generator fuel, and my thinking is that if a house has a generator, and the fuel is propane, then I would have that be a stand alone system, not providing fuel to any other system in the house. Most fuel providers offer automatic fill programs, some with pre-buy options, some not, but in order to accurately calculate the automatic fill delivery cycle, there has to be a reasonably consistent usage curve based on house size, season, weather (temperature), and family dynamic. Since it is not really possible to calculate usage for a generator , and since you certainly do not want to run out of fuel for your generator, I would keep the generator on its own system, not associated with the main propane supply for household use. Maybe somebody who has a generator for standby purposes and also uses propane for household purposes can comment on this situation.