Twist a plastic wire connector clockwise onto the wires to connect them. Stop twisting when the connector is snug. Other dimmers have screw terminals instead of the attached stranded wires to the new dimmer. For the dimmers with screw terminals, strip 3/4 in.Nov 26, 2019

How do you wire a new dimmer switch?

Quote from the video:
Quote from Youtube video: These are interchangeable. Start by wiring the bear ground wire from the house to the green ground wire on the three-way switch screw on a wire nut and tighten it.

What are the 3 wires on a dimmer switch?

Single pole switches will have 3 wires: a hot lead wire, a ground wire, and a traveler wire. Older homes may only have a hot lead and a ground wire. If you have less than three wires, stop and call an electrician.
Aug 2, 2021

What is the common wire on a dimmer switch?

Your new dimmer switch then gets wired the same way as the previous switch, i.e. black(hot) to black and the wire marked common, white or neutral to home’s white(common) wire. Twist wires together using a wire-nut.

Does a dimmer switch need 3 wires?

A 3-wire NM connects the travelers of the dimmer to the travelers of the 3-way switch. Traveler wires are interchangeable on each switch. The 3-way dimmer and 3-way switch are also interchangeable. The common terminal of the 3-way switch connects to the light fixture(s).

What does L1 L2 and C mean on a dimmer switch?

The wires from your old switch can be connected either way round to the “C” and “L1” terminals of the dimmerswitch. If you are using a push-on/push-off dimmerswitch there is a spare terminal (L2) that you will not need to use for a 1-way circuit.

Why does my dimmer switch have 4 wires?

Since the switch cuts the power on and off, there will be a black wire coming into the switch and a black wire leaving. The whites are normally just connected together with a wire nut and the coppers are connected together with a wire nut or grounded to a metal junction box. So the new switch has four wires.
Dec 10, 2017

How can I tell which wire is common on a 3-way switch?

Quote from the video:
Quote from Youtube video: And take a tester and see which one of the black wires is a live wire. So this is our live wire this is going to be our common terminal. Now if you try both of these black wires.

Do you need a neutral wire for a dimmer switch?

As for the neutral requirement, smart devices are a load in series with the light. If the light is off, without a neutral you won’t have a complete circuit to power the smart dimmer circuitry.
Mar 6, 2018

How many wires does a dimmer switch have?

three wires

Attach the Dimmer Switch



There will be three wires: one black, one white, and a separate ground wire that may be bare copper or is sometimes wrapped in green.

Where does the red wire go on a dimmer?

According to the instructions on the dimmer the black wire should be connected to power; the red wire should go out to the light; the striped red wire should just be capped; and the ground should go to the ground.
Sep 15, 2018

What is the red and white wire on a dimmer switch?

Red is the switched lead (or a traveler in a 3-way installation), and is attached to the switched hot going to the light. Red with white is a traveler, used for 3-way installations. In your situation, you’ll just cap this one off. Green is ground, and is attached to the grounding conductor.
Sep 10, 2014

How does a 3 wire dimmer switch work?

Quote from the video:
Quote from Youtube video: In this case it's actually pretty simple on the back of the dimmer switch that we've got here. We've got a we've got a common screw it's a definite identified as black just just like this existing

What wire goes to L1 and L2?

The yellow wire goes into the common terminal, red goes into the L1 terminal and blue goes into the L2 terminal. The grey wire goes in the common terminal, the brown wire goes in the L1 terminal and the black wire goes in the L2 terminal.

What are the terminals on a dimmer switch?

Each dimmer module has 3 screw terminals, L1, L2 & C (common). In 1-way lighting circuits each light is controlled by 1 switch.

What does C stand for on a dimmer switch?

A one way light switch has two terminals which is a common marked as COM or C. The common is for the live wire that supplies the input voltage to the switch. The other terminal is marked as L1 and is the output to the light fixture.

What does leading-edge mean on a dimmer switch?

Leading edge dimming cuts of the front edge of each waves’ half cycle. Conversely trailing edge dimming cuts out the second half of each waves’ half cycle. Trailing edge dimmers are now the more popular of the two types.

How do you wire an inline dimmer switch?

Quote from the video:
Quote from Youtube video: Wire. So you just go ahead and cut that right in half you're going to take off about an inch on each side. And then you're going to cut back the smooth end and expose the copper.

What is the arrow on a dimmer switch?

The tilde with the arrow through it symbolizes the adjusted AC. This is the HOT OUT (the dimmed output). Connect the light between the adjusted AC output and Neutral.
Oct 18, 2016

How do you wire a dimmer switch UK?

Quote from the video:
Quote from Youtube video: And also when installing metal plate dimmer switch you need to check that you've got the 18 wire in this back box because this must be added at the earth in termina here.

How do I wire a light switch?

Quote from the video:
Quote from Youtube video: With your loops created pick up a light switch. And bring one of the loops to a contact point hook it around a screw in a clockwise manner. Once you're hooked in grab your Phillips screwdriver.