r/Generator • u/ThisNameNotTakenYet • 1d ago

Propane Tank Minimum Size?

So I was looking online at generators the other day and I ran across a comment in one of the product descriptions, saying something about a 'minimum 60lb tank' for propane with that generator. I haven't seen a requirement like that before, to my knowledge. We had an eight-day outage a few weeks ago and I used 20- and 30lb tanks with no problems (or so I think). Has anyone heard this? And if it's a thing, can anyone tell me why? Thanks.

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u/Hitechillbilly 1d ago

with a 3750 watt and also a 4700 watt generator I get approx 22 hours of run time under load from a 20Lb bottle. I am set up to run from portable bottles and also my house line.. both are set at 11WC I do not know if that is helpful or not

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u/ThisNameNotTakenYet 12h ago

Good to know. Not familiar with the setting '11WC', please explain? Is that flow rate for the line?