Can Inverter support crock pot and refrigerator

Neither item demands pure sine wave power so efficiency ratios need not apply.my old Norcold demanded 275 watts when on maximum cool. The crock pot is what, 150? With the cost of medium-quality MSW inverters being absurdly low these days, I would not be ashamed to advise getting a 750 watt continuous duty MSW. Less load percentage means less heat generated, more cooling ability, and plus allows you to get flagrant at times with occasional hungry loads like a saw or big drill.