3 Wire Well Pump Vs 2 Wire

Simply put if the deep well pump you need has a motor larger than 1 5 hp the safest bet is to go with a 3 wire well pump so it starts and runs properly.

3 wire well pump vs 2 wire.

The main difference between 2 wire and 3 wire well pumps is characterized by where the starting components for the motor are located. The pump of course is still in the well. In this video chris explains the difference between the two most common submersible well pump motors. The two wire pump does not use a control box.

If your application doesn t require such a large well pump then it comes down to a few purchase decisions. Three wire well pumps house the starting components starting capacitors running capacitors relays and thermal overloads in a control box or panel. In this video i go over the differences of a 2 wire and a 3 wire submersible well pump this is associated with the starting components for the pump and whet. 2 wire motors have two black and a green wire.

Technically speaking your pump capacitor needs electricity to start. Most 4 submersible well pump motors used in residential applications are available in 2 wire or 3 wire configurations. Control boxes are usually mounted on a wall above ground. In a 2 wire pump the relay and start capacitor is located in the pump itself and the pump is in the well.

The main difference is the three wire pump uses a separate control box which includes a capacitor and relay to start the pump. The control box is located inside your house or pump house. Everything is built inside the motor of the pump. In a 3 wire pump the relay and start capacitor is not in the pump but usually in your basement inside a control box.

3 wire motors have a black red yellow and a green wire.