I'm wondering what kind of generator we need to run this. Can we simply plug this into a 120V 20Amp outlet on our 5000 Running Watt / 6250 Starting Watt generator? The same generator also has a 120V/240V 30Amp outlet. Would that work, or will we need to buy something bigger?
Yes the Generac will handle it just fine.
Just make sure you send in your warranty card right away. Generac tends to have issues with their electrical connectors and wiring right from the factory.