Wiring Dimmer Switch Diagram. The black line wire connects to the common terminal of the 3 way dimmer. Remove 3 4 inch of casing from the end of the house wires and the dimmer switch wires if needed.
If you are replacing an existing 3 way switch. The black line wire connects to the common terminal of the 3 way dimmer. Now in the diagram above the power source is coming in from the left.
What a great way to enjoy softer light and a reduced energy bill.
In the diagram below a 2 wire nm cable supplies power from the panel to the dimmer box. The common terminal of the 3 way switch connects to the light fixture s. When wiring a dimmer switch circuit all we want to do is to control the black wire hot wire to turn dim brighten the load. The black line wire connects to the common terminal of the 3 way dimmer.
