The PT35 is designed using two N75 pumps and 3.5 HP motors, coupled on a 150 litre air receiver. The pumps are designed to restart 5PSI apart and requires two 15amp power lines (draws 2 x 13 amps) back to your fuse box to operate this machine. It is very important to ensure that this machine is wired in correctly as failure to do so will cause motor failure. Giving you a massive 550 litres of free air per minute makes for an excellent single phase compressor.