Converters up to 50 amp, 1000, over 50 amp 2000 A 2000 MIGHT run a small high effiency A/C. but 2 of them in parallel may well do a better job.. If you get a 2,000 make your first one a companion model.
A 3,000 should run one A/C.
NOTE: you can substitute MICROWAVE for A/C.
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