I have a Harbor Freight (I know, I know) air compressor. It's the 21 gallon, 2 1/2 HP model. The problem is that when the tank is empty it starts fine, and pressurizes the tank to where it should be. ...
I use a 12 V air compressor at my car for air suspension which I understand is draining around 30-35 A. The problem what I have is overheating and eventually burning the pressure switch and connectors....