The black line wire connects to the common terminal of the first 3 way switch. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box.
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3 gang one way switch wiring diagram. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. In position 1 when the switch is down or on com and l1 are connected together just like the one way switchin position 2 when the switch is up or off com and l2 are connected together. With these diagrams below it will take the guess work out of wiring. Take a closer look at a 3 way switch wiring diagram. In the ceiling light fixture electrical box one black wire from a 3 way switch gets connected to the black load wire on the light fixture. Or these terminals can be ignored for non backlit switch banks.
Each of the gangs or switches above in fig 2 of which there are three work like this fig 3. In the above 3 way switch wiring diagram at each switch the black wire gets connected to the copper or black screw. The wiring diagram to the right will show how to wire and power this 12v 20amp on off on 3 way carling contura rocker switch. Basically this is three single gang 1 way switches on a single face plate. Traveler wires are interchangeable. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light.
A two way light switch can also be used in in place of a one way light switch in this instance the red wire from the feed cable is connected to the common c terminal and the red wire going to the light is connected to the l1 terminal. Typical 3 way switch wiring nm cable. 3 way switch wiring diagram depicting all wires in the ceiling junction box. The l2 terminal is unused. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. 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.
This might seem intimidating but it does not have to be. When wiring this switch you can choose if youd like to illuminate it because of the independent lamp attached to terminals 8 and 7. 3 way switch wiring diagram. The only place you would use such a beast is if you had three lights or sets of lights in a single room each controlled by one of the single switches. A metal light switch must be earthed as seen below. Wiring a 3 way light switch.
This format of light switch has three discreet switches on a single face plate.
Gallery of 3 Gang One Way Switch Wiring Diagram
