Yes Barney, I have checked, and I included it in the original post: 2.8 Amps. That's 322 Watts.
Then Token posted:
"The specs on the box are maximum draw which is mandated by UL. Electrical fire safety and all that. Must list max to limit liability. Thing probably runs 150W after the startup peak."
For once, I may get something to work!
Next comes the propane-powered RV fridge.