Procedure and Diagram for Wire an Electrical Switch

Hi, in this article we are going to know how to wire an electrical switch. An electrical switch is a component or device that is used to control the flow current means to start or stop the flow of electric current. As an electrical technician or having a background in electrical engineering, you must know the Electrical switch wiring. The knowledge about the connection of an electrical switch will help you a lot for house wiring, switch repairing, switch replacement, etc. So, let's see the electrical switch wiring diagram and connection. Here, we will see the connection of both types of switches - one-way and two-way. With the application of a way switch, you can see everywhere for lighting, switchboards, power sockets, etc. The two-way switches are mainly used in staircase lighting, hostels, mesh, etc.

Here you can see the terminal diagram of the one-way switch or SPST Switch. It has two terminals for its connection. It's one position is off and another position is on. So when you operate the switch, it will stop or start the flow of current through it.

Here you can see the terminal diagram of the two-way switch or SPDT(Single Pole Double Throw) Switch. It has two terminals for its connection. It has no off function. It takes an input and provides two outputs. When the switch position is changed, the output supply also be changed.

Electrical Switch Wiring(SPST)

Here, you can see the wiring and connection diagram of a Single Pole Single Throw, or SPST Switch. It is also called One Way Switch.

Connection Procedure

A normal SPST switch has two terminals. When you want to connect it to operate a load. Follow the below procedure,

1. Connect the neutral terminal of the load and power supply directly.
2. Connect the phase or live terminal of the power supply to any terminal of the electrical Switch.
3. Connect the live or phase terminal of the load to the rest terminal of the switch.
4. Now your connection is ready. When you operate the switch, it will close the circuit and the current will flow from the source to load.

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Electrical Switch Connection(SPDT or Two Way)

Here, you can see two number switches are taken for the wiring connection.

Connection Procedure

A SPDT or two-way switch has three terminals. So follow the below procedure for the wiring,

1. Connect the neutral terminal of the power supply to the neutral terminal of the load directly.
2. Connect the phase or live terminal of the power supply to the middle terminal of switch 1.
3. Connect the phase or live terminal of the load to the middle terminal of the switch 2.
4. Connect both of the switches to each other as shown in the above figure.

There are other ways available to connect the two-way switches. Read the related articles to learn about other methods. Link is given below.

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