Wiring a Submersible Pump – The Steps to Follow

As an Amazon Associate, I earn from qualifying purchases.

Last Updated on January 26, 2022 by Alexander A. Smith

A Submersible pump is a hermetically sealed pump device that doesn’t work like other jet pumps. It pushes liquid rather than pulling during its working period. This kind of difference in the working process has its own different wiring diagram. It has some unique advantages over a regular jet pump, so people basically choose a submersible pump to use.

Using a submersible pump will give you some advantages like efficiency, less noise, and so on. Now, if you want to install one of it, you must gather enough information and knowledge about wiring a submersible pump.

Wiring a Submersible Pump

Why it is Crucial to Wire a Submersible Pump Correctly

A correctly wired submersible pump can operate without causing any trouble for many years. Let’s take a look at the reasons why it is crucial to wire a submersible pump rightly:

  • The improper connection may cause a major accident and energy loss, which are never expected
  • It’s quite annoying to repair the same thing repeatedly, and it also affects the financial sector
  • Sometimes, wrongly wired pump remains useless as a repeal pump, and becomes a waste of money. 

So, for a hassle-free experience, you should always try to wire a submersible pump as correctly as possible.

Why it is Crucial to Wire a Submersible Pump Correctly

The Process of Wiring a Submersible Pump – The Steps to Follow

Usually, for a better experience and more efficiency, submersible pumps are used by a large number of people. As it is a less noisy pump, it prevents sound pollution as well. In this case, to fulfill your expectation and better experience, you must wire a submersible pump properly.

For proper wiring, you must be acquainted with a wiring diagram. If you have any doubt about the connecting process of the 3-wire submersible pump wiring diagram, just follow the steps below:

Step-1: Gather All Necessary Equipment and Material

Through the whole process, the single-phase 3-wire submersible pump wiring diagram will help you a lot to stick in the right path.

Along with the wiring diagram, we need to use some essential elements, and they are:

  • A capacitor
  • A resistible thermal overload and
  • A DPST switch (double pole single throw)
  • Suitable Cable (HO7RN-F Cable, PVC 3&4 Core Cable, Flat Drin-cable)

You need to make sure that all these things are arranged and are in order before you start establishing the connection.

Step-2: Ensure Proper Safety  

At first, you will have to turn the main circuit breaker switch off from the distribution board in front of you. It is essential for safety purposes. You need to perform this action to keep the submersible pump safe from electric accidents.

Step-3: Establish a Connection Between Supply to Input Wire Conductor

Secondly, connect the supply to input wire connectors following the submersible pump control box wiring diagram. After establishing a connection from the wire connectors, you will have to attach both the neutral and line to the DPST switch.

The next task for you is to get the connection from wire connectors way carefully. Then comes the necessity of connecting the neutral and line wire to the given DPST switch. Up next, you need to connect it with full caution to the reset-able thermal overload protector. 

Form the overload protector, you must connect the black wire to any output of the given wire connectors. Now take the neutral blue wire from the switch and connect it to the capacitor. The same blue wire should be connected to the main line of the pump through one of the four ports of the wire connectors.

Submersible Pump

As the other pin of the capacitor remains free, connect a red wire to it and guide the wire to the submersible cable through a wire connector’s port. Now connect your green-colored ground or earth wire directly with the pump through first port of the wire connectors.

After doing so, you will have a total of four output wire connectors connected with the pump. In which the first wire indicates ground, and the second wire comes from the capacitor, so it’s for starting terminals.

On the other hand, the third one is for running wire for motor, and lastly, the fourth one is used for the common end. So, except the ground connection wire, you need to connect the other three wires of a submersible pump to the control box.

  • Running wire
  • Starting wire and
  • Common wire

So mainly in a submersible pump, the black wire is common, blue is for running, and brown or red is for starting. But the colors may not always remain the same, and in some cases, the color of those four wires can be different as well.

Step-3: Check the Pump

By following the connection establishing process, you can easily connect the wire of a submersible pump. After establishing the connection, you should re-check the entire wiring diagram to ensure everything is correctly operating. Then switch on the main circuit breaker in your distribution board, and turn the submersible pump on.

You must keep a close eye on the pump for at least 30-45 minutes for extra safety. If the pump runs properly without any problem spark or unwanted sound, then the wiring of this submersible pump is perfectly completed.


Are the wiring procedures of the 2-wire and 3-wire submersible pump the same?

No, the wiring procedures of the 2-wire and 3-wire submersible pumps are quite different. Usually, the 2-wire pumps come with two black and a green wire divided by two pins. On the other hand, the 3-wire pumps contain black, red, yellow, and green wire which are divided by a set of three pins.

The starting components of a 3-wire pump are tide-up within an extra control box. But the 2-wire pumps do not use an extra control box as all the components are built within the motor itself. 

Should I keep the wiring diagram while wiring the submersible pump?

Yes, keeping the wiring diagram near you will help you during the wiring period. For example, you may face difficulties because of the complex connection of the submersible pump. At that moment, the wiring diagram of the submersible pump will come in great assist for you. 

Final Thoughts

This submersible pump can be used for different purposes, and it is quite efficient to use. However, to install a submersible pump, you have to ensure proper wiring. But for this, you must learn the correct process of wiring a submersible pump.

For better experience and safety, correct wiring of the submersible pump is crucial worldwide. Therefore, correct submersible pump wiring has a significant impact, especially in the industrial sectors.

Leave a Comment

Your email address will not be published.

Scroll to Top
Share via
Copy link
Powered by Social Snap