ECN Forum Forums General Topics of the Trade General Discussion Area Conductor Size for AC compressor

There is an outside Air Conditioning compressor for Central Air. The name plate running Amps says 19amps. 30 amp breaker at the Panel. Even though the code says #12 is good for 25 amps, the unit should be wired in #10 wire, right? Is there an exception in the 440 section of the code? As far as I know #12's limit is 20 amps. No exceptions? Thanks - Good Day