Dimmer Switch Wiring Diagram - Single Pole( 2 Way), 3 Way


Hey, in this article we are going to see the dimmer switch wiring diagram for both single-pole and three-way. Dimmer switches are available in major two types single pole(also known as two way) and three-way. Dimmer switches are those which can control the flow of current or voltage. Basically, dimmer switches are used to control the brightness of lights or bulbs. You will see its applications in drawing rooms, theaters, etc. The wiring diagram is given n this article will help you to get knowledge about the connection of the dimmer switches. Remember that electricity is very dangerous. So before making the connection or installing a dimmer switch make sure that you are authorized to do the electrical work. Without knowledge of electricity can be very harmful and dangerous.


Dimmer Switch Terminals


Here, you can see the terminals of both single-pole and three-way dimmer switches.

Dimmer Switch Terminals for Connection



Figure 1.1 shows a single-pole or two-way dimmer switch that has screw-type terminals. The left side lower terminal is for the grounding connection. The right side lower terminal is to be connected to the phase or hot terminal of the incoming power supply. The right side upper terminal is to be connected to the load.

Figure 1.2 shows a single pole dimmer switch that has wired terminals for external connection. The hot or line terminal may be of black color or red color or blue color. The Load terminal generally uses a black color. The ground terminal uses green color or bare copper.

Figure 1.3 shows a three-way(3-way) dimmer switch. The left side low terminal is for grounding and the right side lower terminal is for the line. The upper side of both terminals is for load connection.

Nowadays there are various types of dimmer switches are come on the market some are rotation types some are push types and some are sensing types. But all of them have the same external terminals for connection with bulbs or light.


Single Pole(2 Way) Dimmer Switch Wiring Diagram


Here, you can see the wiring and connection diagram of the Dimmer switch with a bulb.

Single Pole(2 Way) Dimmer Switch Wiring Diagram


Connection Procedure

  1. Connect the grounding terminal from the power supply to the ground terminal of the dimmer switch as shown in the above figure.
  2. Connect the hot terminal of the power source to the line terminal of the dimmer switch. Here, you can use black or red, or blue color wire as per your country's standard.
  3. Connect the load terminal of the dimmer switch to any one terminal of the bulb. Here, you can use a black color wire.
  4. Now connect the neutral from the power source to another terminal of the bulb. Here, you can use white color or as per your country's standard.


Three(3) Way Dimmer Switch Wiring Diagram


Here, you can see the wiring diagram and connection of the three-way dimmer switch. You can see here two dimmer switches are required. But if you want to control dimming from one place and On/Off from another place then just take one piece three-way dimmer switch and one-piece three-way On/Off switch. The normal 3-way On/off switch also has the same terminals as the dimmer switch so the connection is also the same. You can refer to the exact same diagram as shown below if you use dimmer switches for both places. Otherwise, just replace one dimmer switch with a normal 3-way on/off switch.

Three(3) Way Dimmer Switch Wiring Diagram


Connection Procedure

  1. Connect the load terminals of both switches as shown in the above figure.
  2. Connect the hot terminal from the power source to the line terminal of the first switch.
  3. Connect the line terminal of the second switch to any one terminal of the bulb.
  4. Connect the neutral terminal from the power source to another terminal of the bulb.
  5. Connect the ground terminal to both switches together.


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Dimmer Switch Wiring Diagram - Single Pole( 2 Way), 3 Way Dimmer Switch Wiring Diagram - Single Pole( 2 Way), 3 Way Reviewed by Author on 4/18/2022 Rating: 5

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