1 Way Switch Wiring Diagram PDF

Are you planning to install a 1-way switch in your home, but not sure how to go about it? Don’t worry, this article will provide you with a step-by-step guide on how to wire a 1-way switch. We have also included a wiring diagram in PDF format that you can download and use as a reference.

What is a 1-Way Switch?

A 1-way switch is the most basic type of switch that is commonly used in homes. It is also known as a single-pole switch. A 1-way switch has two terminals that are used to connect and disconnect the circuit. When the switch is turned on, the circuit is closed, and when it is turned off, the circuit is open.

Advantages of a 1-Way Switch

There are several advantages of using a 1-way switch in your home, such as:

  • Easy to install and operate
  • Reliable and durable
  • Cost-effective

Disadvantages of a 1-Way Switch

Although a 1-way switch has many advantages, there are some disadvantages as well, such as:

  • Cannot control the same light from multiple switches
  • Not suitable for large rooms or multiple lights
  • Difficult to implement complex lighting schemes

How to Wire a 1-Way Switch?

Before starting the wiring process, it’s important to turn off the power supply to the switch. This can be done by switching off the circuit breaker or isolator switch. Once the power supply is turned off, follow these steps to wire a 1-way switch:

Step 1: Gather the Required Tools and Materials

Before starting, ensure that you have the following tools and materials:

  • Screwdriver (preferably a flat-head)
  • Wire stripper
  • Electrical tape
  • 1-way switch
  • Cable (either 3-core or twin and earth)

Step 2: Remove the Existing Switch

If you are replacing an existing switch, remove it from the wall by unscrewing the screws holding it in place. If you are installing a new switch, cut a hole in the wall according to the dimensions of the switch.

Step 3: Connect the Wires to the Switch

Strip the outer jacket of the cable to expose the wires. Connect the live wire to the common terminal (usually marked with a C on the switch). Connect the neutral wire to the terminal marked with an N. If there is an earth wire, connect it to the terminal marked with an E.

Step 4: Secure the Switch in Place

Once the wires are connected, secure the switch in place by screwing it into the wall. Ensure that the switch is flush with the wall and there are no gaps between the switch and the wall.

Step 5: Test the Switch

Turn on the power supply and test the switch by turning it on and off. If the switch is working properly, switch off the power supply and secure the switch with a faceplate.

1-Way Switch Wiring Diagram PDF

If you are unsure about how to wire a 1-way switch, you can refer to our wiring diagram in PDF format. This diagram provides a visual representation of how to wire a 1-way switch, making it easier to understand and follow.

Terminal Wire Colour
C Brown (Live)
N Blue (Neutral)
E Green/Yellow (Earth)


1. Can I use a 1-way switch to control multiple lights?

No, a 1-way switch is not suitable for controlling multiple lights. You will need a multi-way switch or a dimmer switch for that purpose.

2. What is the difference between a 1-way switch and a 2-way switch?

A 1-way switch has only one set of contacts, whereas a 2-way switch has two sets of contacts. This allows a 2-way switch to control the same light from multiple switches.

3. Can I wire a 1-way switch without a neutral wire?

No, a 1-way switch requires a neutral wire to function properly. If there is no neutral wire, you will need to install one before wiring the switch.

4. Can I replace a 1-way switch with a dimmer switch?

Yes, you can replace a 1-way switch with a dimmer switch, but you will need to ensure that the dimmer switch is compatible with the type of light you are using. The dimmer switch should be rated for the same voltage and wattage as the light.