What happens if you wire a well pump backwards?

In reality, a pump operating in reverse rotation because of wiring or phase change will pump in the normal direction. Now, it won’t pump very well. Its flow will be reduced, as will its head. The NPSH characteristic will not match the cataloged value.

Can water flow backwards through a pump?

Flow reversal is a serious problem that can occur in piping systems with parallel pumps or in systems that pump uphill. When one or more pumps trip out of service, the loss in pressure can cause reverse flow to form based on the piping’s elevation, slope, flow resistance, and pressure differential.

What are the three wires on a submersible pump?

A continuity tester MIGHT tell you which two leads are for the motor itself, but the third wire could be a ground or a capacitor feed. We cannot tell which without seeing a wiring diagram for the motor or the control box. Re: wiring submersible pump – what wires are what ?

How do you replace a two wire pump?

To replace the two wire pump: After determining the voltage is zero, disconnect the motor wires directly from the pressure switch box, M1 and M2. The green ground wire should also be terminated to the box and a ground coming from the panel.

How to install a submersible well pump wiring diagram?

Submersible Well Pump Wiring Diagrams 1 Start at the Breaker Panel. The main breaker panel should have a wiring schedule handwritten inside the front door panel. 2 Determine Number of Wires. 3 Check for Voltage. 4 Replace a Two Wire Pump. 5 Replace a Three Wire Pump. 6 Educate Yourself Before Hiring a Professional.

How to troubleshoot a submersible pump system?

Troubleshooting Residential Submersible Pump Systems 1 The wiring system. A 3-wire system (actually there is a fourth equipment ground conductor that is not counted in the number of wires) implies there is a control box inside 2 Stepping through a diagnosis. 3 Beyond the basics.