If it comes factory with the 20 plug it needs 12 wire and a 20 breaker.
If it comes factory with the 20 plug it needs 12 wire and a 20 breaker.
The question was can I run a 15.7 A rated motor with a 14 ga cord on a 20 A breaker, or should it be 15A. I'm gonna put a 20A in.
The second question was do I leave the neutral (white) or the ground (green) unconnected to the receptacle. I'm gonna hook up the ground.
Did the 6-20p come on the compressor?
If not then it may not be rated for 3.5HP.
If it comes factory u can hook it to 20,, the motor has its own thermal, it actually protects the wire ahead of it. Yes, use the ground and cap the neutral.
You plug 16 wires in to 20A circuits every day.