eh.. ballpark 1100 watt microwave pulls 10ish, plus light and turntable add about 2-3 more. If I remember right.. yours should be around 700 watt, should pull about 9-10 amps with light and turntable.
There will be a surge when the microwave kicks in, the gen may or may not hold it.. Should by the numbers, but best thing is just to try it out.
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