Step-by-Step Guide: Installing a Lutron Diva 3-Way Dimmer Switch
Are you looking to upgrade your home's lighting system with a Lutron Diva 3-way dimmer switch? You've come to the right place. This comprehensive guide will walk you through the process, ensuring a safe and successful installation. Let's dive in!
Before You Start: Tools and Materials Needed
Before you begin, make sure you have the following tools and materials on hand:
- Lutron Diva 3-way dimmer switch
- Wire stripper
- Screwdriver (flathead and Phillips)
- Needle-nose pliers
- Wire connectors (wire nuts)
- Electrical tape
- Wire cutter
- Non-contact voltage tester
Safety First: Turn Off Power and Test Wires
Safety is paramount when working with electricity. Start by turning off the power to the circuit at your home's main electrical panel. Once you've turned off the power, use a non-contact voltage tester to ensure that the power is indeed off and that the wires are safe to touch.

Removing the Old Switch
With the power off and the wires tested, it's time to remove the old switch. Unscrew the switch plate and set it aside. Then, unscrew the switch from the electrical box. You may need to use a flathead screwdriver to release the switch from the box if it's stuck.
Identifying Wires
Before you remove the old switch, identify the wires connected to it. In a 3-way switch setup, you'll typically see two black wires (travelers) and one white wire (common). There may also be a green or bare copper wire (ground).
Wiring the Lutron Diva 3-Way Dimmer Switch
Now that the old switch is out, it's time to wire the new Lutron Diva 3-way dimmer switch. The wiring process is straightforward, but it's essential to follow the correct procedure to ensure safe and proper operation.

Step 1: Connect the Ground Wire
First, connect the ground wire (green or bare copper) to the green terminal on the Lutron Diva switch. If your electrical box is metal, you may also need to connect the ground wire to the box using a screw or wire connector.
Step 2: Connect the Common Wire
Next, connect the white wire (common) to the terminal marked "Common" on the Lutron Diva switch. This wire will provide power to the switch and the light fixture.
Step 3: Connect the Traveler Wires
Now, connect the two black wires (travelers) to the remaining terminals on the Lutron Diva switch. It doesn't matter which terminal you connect each traveler to, as long as they are connected to different terminals.
Step 4: Secure the Wires
Once all the wires are connected, use wire connectors (wire nuts) to secure the connections. Make sure the connections are tight and that there are no loose wires. Then, wrap each connection with electrical tape to ensure a secure and waterproof connection.
Installing the Lutron Diva Switch and Switch Plate
With the wiring complete, it's time to install the Lutron Diva switch and switch plate. First, screw the switch into the electrical box, making sure it's secure and flush with the wall. Then, attach the switch plate, screwing it into place.
Testing the Lutron Diva 3-Way Dimmer Switch
Before turning the power back on, use your non-contact voltage tester to ensure that there are no live wires. Once you've confirmed that the wires are safe, turn the power back on at the main electrical panel. Test the Lutron Diva 3-way dimmer switch by toggling it on and off and adjusting the dimmer to ensure it's working correctly.
Enjoy Your New Lutron Diva 3-Way Dimmer Switch
Congratulations! You've successfully installed a Lutron Diva 3-way dimmer switch. Now you can enjoy the convenience and ambiance of dimmable lighting in your home. If you have any questions or encounter any issues during the installation process, don't hesitate to consult a licensed electrician.