With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. You dont need the other terminal on the three way switch so its fine to cover it over with electrical tape to ensure the terminals dont get mixed up.
3 Way Switch Wiring Methods 2 Wire And Light Fed S3
Can you wire a 3 way switch with 2 wires. You have an incoming hot wire black going to one screw it does not matter if you use the brass or silver screw on the side of the 2 way switch and a black wire from the other screw on the 2 way switch going to the load light ceiling fan etc. Replace any regular switches with the 3 way switches. Wiring a 3 way light switch. Run a length of 14 2 cable from each 3 way switch to the light fixture and a third one between the. Finish your work and test. Before you start installing take a look at your new 3 way switch to identify all of the terminals that you will be connecting wires to.
Have not found where the switched leg is being picked up for the receptacles in the room. Two way switches are single pole single throw spst with two connection wires and are wired with 122 or 142 cable between the switch and fixture. Traveler wire terminals these are located on each side of the switch towards the top of the switch. Notice the black wire is the only wire that we are controlling through the 2 way switch. And make sure all of your ground connections are completed and securely fastened. All three way switch and 2 way switch wiring diagrams have the same basic components.
If your 3 way light switch 2 is connected between the power supply and the light fixture as is most common. I have always seen 3 wire to carry current over the travelers between switches then to the fixture on the common. Wires consisting of a line a load a neutral a pair of travelers and two 3 way switches. 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. If you are trying to troubleshoot a 3 way switch operation you will need to identify the function of each wire. Looked at an existing home brother in laws and found that the 3 way switch in the dining room only has 2 wire running from 3 way to 3 way.
There is a way to wire a light fixture controlled with two 3 way switches using only 14 2 cable. A three way wall switch is single pole double throw spdt with three connection wires and is typically wired with 123 or 143 cable between the two switches. Since power one hot and one neutral is at both ends the hot at one end is connected to the common while capping off the unused neutral and at the other end the neutral from the power feed is connected to the lights neutral while capping off the unused hot. The existing 2 wire black and white romex can still be used to connect a 3 way switch 2 and the light fixture. A 3 way switch will not have the words on or off written on it. Level advanced description power at both ends switch leg at one with a 2 wire 142 or 122 used as travelers.
To use a three way switch as a single pole one connect the hot wires to the common terminal and the traveler on the same side of the switch body.
Gallery of Can You Wire A 3 Way Switch With 2 Wires
