Just to keep in mind. Different colored acme nuts that screw onto a propane cylinder have different BTU ratings.
Black typically found on BBQ grills allows for propane flow to support 70000 BTU.
Green typically used on trailer pigtails allows for propane flow to support 200,000 BTU. As long as your total BTU requirement for the generator, furnace, stove, water heater, fire pit and fridge are less than 200,000, you should be good to go. Otherwise, you might need to step up to a red acme nut and you might need a different regulator.
Red typically allows for propane flow to support 400,000 BTU. The only time I've ever seen the red ones in use was on a Papa John's trailer that had six 40 lb propane cylinders mounted on the tongue. All six were connected in pairs flowing through 3 regulators to supply propane for the pizza ovens inside.
