The good news is that there’s typically no need to hire an electrician.
Learn how to install an electric dimmer by following the six simple steps below.
Materials:
- Electric Dimmer Switch
- Electrical Tape
- Wire Nuts
Tools:
- Neon Circuit Tester
- Slotted Screwdriver
- Phillips Screwdriver
- Wire Stripping
- Pliers
Instructions:
Step 1) Turn Off the Power
Never perform any electrical work without turning off the power. You can shut off the power to the switch by turning off the circuit breaker or by removing the appropriate fuse.
Don’t take it for granted that the power has been turned off successfully. If the existing switch works, flip it to ensure that power is no longer running to it. Remove the screws that secure the switch and gently pull it away from the wall. Use the circuit tester to test the terminals and confirm that power is no longer running to the switch.
Step 2) Remove the Old Switch
Note the color and location of each wire going to the old switch. You will be wiring the new dimmer in the same manner. One wire went to the terminal marked “common” or “line”. This is the hot lead from the breaker box. The other wire is the “load” going to the light fixture. If you see a bundle of wires in the back of the wall box, you can just ignore them. Using the screw driver, unscrew the wires from the switch and set it aside. Now we are ready to install the new dimmer switch.
Just a quick note on wire colors. Any green or bare wire is always a ground. You may or may not have a ground wire in your wall box. If you don’t have one, the wall box should be steel and should itself be the ground. White wires are always neutral in homes with conduit, but can be hot wires in homes with cable wiring if they are marked with black electrical tape. Hot and load wires can be any color except green or bare, with white only used as noted above for cable systems.
Step 3) Attach the Ground Wire
If the switch box has a ground wire, take the ground wire from the dimmer and remove about 5/8-inch of pre-cut insulation. Put the ground wires from the switch box and electric dimmer side by side and secure them in place with a wire nut. Turn the nut clockwise to lock the wires in place, and then turn the wires until each one has a slight twist. For added security, use electrical tape to hold them together as well. If your wall box has no ground wire, attach the dimmer’s ground directly to the wall box with a ground screw.
Step 4) Connect the Hot and Load Wires
While the old switch used screw terminals to connect to the house wiring, dimmers typically have short wire leads instead. You will be using wire nuts to splice these wires together. Since you noted which wires went where, connect the hot, common or line wire to the black dimmer wire. The load house wire connects to the load dimmer wire, which is usually red. See the diagram that comes with the dimmer to confirm this.
Step 5) Test the Dimmer
Turn the power back on so that it runs to the switch. Try using the switch. If the light turns on, you’re in business.
If the switch doesn’t work, the hot wire and the load wire may be reversed. Turn off the power to the switch and reverse the wires. The switch may also not work because the bulb is burned out or because you’re using a non-dimming CFL. Check for loose wires and for a bad bulb connection.
Step 6) Install the Cover Plate
Gently tuck and fold the wires into the switch box. From there, press the electric dimmer into the box and install the mounting screws. Replace the plastic cover plate and secure it in place with finishing screws. Your electric dimmer should now be ready to go!
- Provides the best dimming performance for LED bulbs (compatible with 800+ bulbs - for more specific details view...
- Also works with ALL incandescent and halogen bulbs. Adjust the low-end trim. This can be done by simply holding the...
- Provides the best dimming performance for LED bulbs (for list of approved LEDs, see 'Technical Specification' below)
- For use with up to 150-Watts of dimmable LEDs or up to 600-Watts of Incandescent or Halogen bulbs
- For use with 300-Watts of Halogen or Incandescent Bulbs (for LED version, please see TTCL-100H-WH)
- Dims table and floor lamps to suit any activity
Last update on 2019-06-29 / Affiliate links / Images from Amazon Product Advertising API
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