The black line wire connects to the common terminal of the first 3 way switch. 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.
How A 2 Way Switch Wiring Works Two Wire And Three Wire
How to wire 3 way light switch on 2 wires. 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. In the above 3 way switch wiring diagram at each switch the black wire gets connected to the copper or black screw. 3 way switch wiring diagram depicting all wires in the ceiling junction box. Each 3 way switch in these examples are controlling the power source to the same load. First run a 2 wire cable from the wall power to the black screw on 1 of the switches. 3 easy ways to hide wires cables in wall find studs duration.
With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. Wiring a 3 way light switch. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. A 3 way wall switch controls a common light or set of lights from two separate switch locations. Change the light switch that operates on both sides of the wall. Traveler wires are interchangeable on each switch.
To wire a 3 way light switch youll need 2 3 way light switches 2 2 wire non metallic cables 1 3 wire non metallic cable and 2 6 inch grounding wires. This guide highlights the procedures for replacing a broken 3 way electrical switch. Two way switching explained how to wire 2 way light switch duration. 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. The common terminal of. 2 blacks wires hot lead 1 red wire relay.
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 your 3 way light switch 2 is connected between the power supply and the light fixture as is most. 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. E lastly if your light fixture isnt wired yet connect the light fixture to the 2 wire romex black and white wires only which leads to your new 3 way light switch 2 and you should have completed your 3 way light switch circuit. Before proceeding make sure you are comfortable working with electrical wires and switches. The engineering mindset 3365167 views.
A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. Two 3 way switches are required in any 3 way application. Level advanced description power at both ends switch leg at one with a 2 wire 142 or 122 used as travelers. 15 minutes to change.
Gallery of How To Wire 3 Way Light Switch On 2 Wires
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