Wiring a 3 way light switch is certainly more complicated than that of the more common single pole switch but you can figure it out if you follow our 3 way switch wiring diagram. Any color but white gray or green can be used.
Handyman Usa Wiring A 3 Way Or 4 Way Switch
3 way switch wiring diagram red white black. When wiring a 3 way switch circuit we will be using a 3 wire cable known as romex coming from the source such as the breaker box. If it doesnt work switch the lower wires. This is a typical wiring setup for a 3 way light switch with black white red and ground wires. A three way switch is different. Three wire cable runs between the switches and 2 wire cable runs to the light. Wiring a three way switch.
This means that there is a black hot wire a white neutral wire and a bare copper grounding wire. The standard way to power a split tab outlet is to run a three conductor cable to a wall switch. Red and black form the same cable will connect ot he brass screws then the red and black from the other cable will connect ot he black screws. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. Typical 3 way switch wiring nm cable. 4 way switches have 4 screws 2 will be black and 2 will be brass.
This type of switch lets you turn the light off or on from more than one place in the room. Wiring a 3 way light switch. The black and red wires between sw1 and sw2 are connected to the traveler terminals. The cable has a black wire which connects directly to the circuit and a red wire which connects to the switch. In this diagram the electrical source is at the first switch and the light is located at the end of the circuit. The travelers get connected to the two brass screw terminals on the 3 way switch.
With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. Each 3 way switch in these examples are controlling the power source to the same load. The same wiring method is also used for two way switch wiring. You will have to get a 4 way switch for that position not a 3 way switch. The black and red wires are travelers and are connected to the traveler.
The red wire is the other traveler. Then a 4 wire cable going between the two 3 way switches and then a 3 wire cable going from the switches to the load. The feeder wire from the power source is a 2 wire cable with ground. The black line wire connects to the common terminal of the first 3 way switch. The ground wire also connects to the switch but the white wire gets spliced to the circuit neutral wire and bypasses the switch. Three way switch wiring.
This type of switch has two brass screws usually. Traveler wires are interchangeable. Wiring diagram 3 way switch with light at the end. The cable run linking the two switches is made with 3 wire cable. When a white wire is being used as a traveler it needs to have its color changed according to article 310110c.
Gallery of 3 Way Switch Wiring Diagram Red White Black
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