Can I use #14 wire on a 20A circuit for a compressor outlet?
20A breaker, 12Ga wire. Nothing special about it. The breaker protects the wire, the NEC specifically limits 10, 12 and 14 Ga wire to 30, 20 and 15 Amps respectively.
&quot;Get away with&quot; means you know it's wrong, so, go with what you know, and don't try to &quot;get away with&quot; something wrong, especially something so trivially inexpensive to do right.