Electrical/UPS question

[M A V I C]

[quote JoeH]As for wiring, the code used to allow a 20 A breaker and plug on a short run of 14 gauge wire if that was the only thing on the circuit. That was removed when they found too many circuits got extended later and the initial 14 gauge run was then insufficient, now it must be 12 gauge all the way. Measuring based on the marking on a wire cutter is not enough to be certain, you would nee to pull enough of the cable to read the casing description for the wire inside.
I tried both outlets on the circuit, and neither of them could I pull enough out to see the markings on the sheathing.