Are all dimmer switches the same?

Dimmers all perform the same function, altering the illumination produced by the attached fixtures, but there are many types of dimmer switch controls. These traditional switches have a rotating knob that controls the light level.

Are all LED dimmers the same?





While most LED bulbs are now dimmable, not all of them are and not all of them dim in the same manner Since LEDs consume such a low wattage, many types of dimmers do not function with LED in the same way that they do with high wattage load incandescents.

What are the different types of dimmers?

Most dimmers fall into these four bulb type categories:

  • Incandescent and halogen bulbs.
  • Dimmable compact fluorescent light bulbs.
  • Magnetic Low Frequency (MLV)
  • Electronic Low Frequency (ELV)

What are the two types of dimmer switches?

There are two types of dimmer switch for mains dimming in your home; leading edge and trailing edge. Trailing edge switches work best with LEDs. If your dimmer switch is old it’s likely a leading edge switch and worth changing to a trailing edge version.

How do I know what type of dimmer switch I have?





If you already have light bulbs and are looking for a dimmer switch, find the product page for the bulbs and check the PDF for a list of compatible dimmers to choose from. The specific dimmer compatibility information will always be with the bulbs rather than with the dimmer.

Can you have 2 dimmers on a 3-way switch?

The answer is no. If you set up a 3-way switch for your light, there can’t be multiple dimmers. However, there are workarounds to this. Such as placing one dimmer on the line leading into the first switch.

How can I tell if my dimmer switch is LED compatible?

Check Your Existing Dimmer

The type of dimmer switch and it’s minimum/maximum load range will indicate the compatibility with LED light bulbs. Trailing edge dimmers work best with LED light bulbs and leading-edge dimmers work best with traditional incandescent and halogen light bulbs.

What happens if you use non dimming bulbs on dimmer switches?



So what happens if you use non-dimmable LEDs on a dimmer? Well, at best the bulb just won’t dim properly. At worst, though, you might damage the bulb. You see, dimmable LEDs have special circuitry inside that allows them to respond to varying current levels or “pulsing” current waves to produce a dimming effect.

Can you use a dimmer switch on any light?

A dimmer switch can be installed anywhere that an existing on or off switch is in place. Replacing the current toggle switch with a dimmer switch will allow you to change the lights’ brightness, so long as you are using a light bulb that is compatible with the dimmer you have chosen.

Is a dimmer switch wired the same as a normal switch?

Replacing a standard single-pole or three-way switch with a dimmer switch is no different than replacing a standard switch. Remember: Dimmer switches don’t work on most fluorescent fixtures, and low-voltage lighting requires special low-voltage dimmers.

Do dimmer switches need special wiring?



New dimmers have either a green grounding wire or a green ground screw that you’ll have to connect to a grounding source if one is available. Houses wired with plastic-sheathed cable almost always have bare copper ground wires that you’ll connect to the toggle dimmer switch.