That's exactly what I have. In fact - 2 of them, and the 350 ran both of them for 3 hours (which isn't surprising because those motors don't draw much power).
3 hours for a 350 isn't bad at all, I would of expected a little less.
The XP3 made a chattering noise and would stop dead, I blew almost 200 dollars on two 650VA UPS's only to have it not work on two canisters, I had my wife go in with her puppy dog eyes and ask for a refund.
Generator here I come! (Minus a kidney, lung, and anything else I can sell.)