If a refrigerator requires a 15 or 20 amp power supply, then wouldn't a 13 amp, 14 gauge heavy duty power cord be insufficient to connect the refrigerator to a generator? Also, wouldn't using two heavy duty power cords be bad? I don't know anything about amps or gauges, but my father who does connected the refrigerator to a power strip (a defunct surge protector), then plugged the power strip into the 14 gauge, 13 amp power cord. He then plugged that power cord into another power cord of unknown gauge and amps, and that plugged into the generator. I thought the refrigerator sounded odd during the time it was running off the generator, but it was hard to tell.
I suspect my power will go out again from this snow storm that's coming so I would at least like to be using the correct power cords this time.