Twist another orange wire connector to the remaining black wire on the dimmer connecting it with the white wire wrapped in black electrical tape. Route them along the back of the box to a central location cut them to length and use wire strippers to expose about 34 in.
How To Install A Smart Light Switch Digital Trends
Connect 4 wire switch to 3 wire box. In the switch box. Connecting a 4 wire and a 3 wire circuit at a junction box is used to connect two 120 volt circuits to one 240 volt line. In this diagram the incoming hot wire attaches to the first switchs common dark colored terminal. Connect black fan wire to the black ceiling wire. Of copper conductor on each wire. White wire to white wire neutral.
So take a guess and cap the other one with a wire nut. Twist all four black wires together with a yellow wire nut. Twist your hot wires to the black wire in the ceiling. A smart switch like your timer needs to use power not just interrupt it so it needs a neutral of its own. Cap the red wire and leave it untouched in the junction box. The power supply wire is the wire that connects directly to the breaker panel.
Connect one black wire from the dimmer to the black wire inside the switch box by twisting an orange wire connector onto both wires. Using one 240 volt line to power multiple 120 volt circuits reduces the amount of wire needed and the number of. Twist the conductors with pliers trim the bundle and cap it with a wire nut. Green wire ground to uninsulated ground. This 3 way switch wiring diagram shows how to wire the switches and the light when the power is coming to the light switch. To do this method the wire from your wall circuit to your light has to have 3 wires.
3 way switch wire diagram power to light switch. Connect the black wire from the power supply to all three of the black pigtails. Tape the wire nut to the wires with electrical tape. Connect the blue wire to the red wire. Connect white wires together. You need to get it that neutral.
One way would be to replace the 2 wire cable coming from the existing fixture with a 3 wire cable. White neutral wires often are connected together in a switch box. The first option is to use the black wire of the 12 3 cable as the hot wire. You should always connect your hot wires last. If you only have 1 switch connect the bound blue and black wires to the black wire coming out of your ceiling. Youll have to guess whether to use the red or the black wire from the box to connect to the black wire from the fixture.
There are two ways to connect a 12 2 wire to this cable. Wrap the tape around the wire nut and onto the wires. Look at the four wires of the 12 3 cable. The two hot wires of three wire cable connect to a pair of. Connect the black wires of both cables together and connect the common white wires together. Split the incoming hot wire into a y and connect it to a terminal on each switch.
Not knowing how the box was wired originally presents a problem but only a small one. If you have a 2 switch setup connect the blue and black wires to the blue and black wires coming out of your ceiling. This configuration is used most often for large lighting arrays.
Gallery of Connect 4 Wire Switch To 3 Wire Box
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