4 Wire Dimmer Switch Diagram. A rheostat or dimmer makes it possible to vary the current flowing to a light fixture thereby varying the intensity of the light. The white wire of the cable going to the switch is attached to the black line in the fixture box using a wirenut.
The electrical wiring adds additional wiring to the same. In the diagram below a 2 wire nm cable supplies power from the panel to the dimmer box the black line wire connects to the common terminal of the 3 way dimmer 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 dimmer switch will have stranded wires that must be sliced to the solid cable wiring in a pigtail fashion.
4 way switch wiring 4 way switch wiring fully explained 4 way switch diagrams.
4 way switch wiring 4 way switch wiring fully explained 4 way switch diagrams. Then tie the 2 black wires along with the black line wire on the idevices dimmer switch together with a wire nut. The dimmer switch will have stranded wires that must be sliced to the solid cable wiring in a pigtail fashion. The white wire of the cable going to the switch is attached to the black line in the fixture box using a wirenut.
