Installing A 3-way Switch With Wiring Diagrams
Notice that there is a 3-conductor cable coming into the first box, then a 4-conductor cable going from left box to right box, then a 3-conductor cable going from the right box to the load. Now for wiring, lets assume you're looking at the switch just like it shows. The lower left is the common and gets the black wire from the source 3-cond. The upper left screw gets the black wire from the right box 4-cond.
The upper 3-way light switch hookup screw gets the red wire from the right box 4-cond. The white wires tie together with a wire nut. The bare copper wires tie together with a wire nut. Be sure to attach a bare copper wire to the green screw on the switch. The lower left screw is the common and gets the black wire from the load god profiltekst dating eksempel. The upper left screw gets the red wire from the left box 4-cond.
The upper right screw gets the black wire from the left box 4-cond. Follow along with the mouse pointer as we go through this. The source power black wire is coming in from the left. It ties into the common on the left switch. When the left switch is 3-way light switch hookup, it connects to the upper circuit and now the 3-way light switch hookup is open at the right switch which turns off the light. Toggle the right switch and it connects to the upper circuit and now closes the path and turns the light back on and so on.
In my mind wiring is one thing, but to look at a diagram as the one above and understand the principle involved, that is the key to do-it-yourself house wiring. If you're simply replacing a 3-way switch, the diagrams below will show the different scenarios on how your circuit could possibly be wired. What is common in the diagrams above and with any 3-way switch circuit is that the power hot wire coming into the circuit will always 3-way light switch hookup to the common terminal of the first switch.
The hot wire from light always goes to the common terminal of the second switch. The traveler wires go from switch to switch connected to the traveler terminals, it doesn't matter which. As long as you keep this in mind, a 3-way circuit becomes really simplified. And of course the neutral will always go directly to the load. Allow Tim Carter from AskTheBuilder. Add a Comment, Tip or Problem Your Having with DIY Electrical.
Wiring a 3-way switch is a little more tricky than wiring a 2-way switch. First of all we need to go over a little basic terminology on switches. Go to my Switch Terminology Page where I discuss the terms used for the different types of home electrical switches. It should also help in understanding the functions of each type of switch. At each end of a hallway. Each 3-way switch in these examples are controlling the power source to the same load. When wiring a 3-way switch circuit, we will be 3-way light switch hookup a 3-wire cable known as romex coming from the source such as the breaker box.
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 3-wire cable consist of a black wire, a white wire and a bare copper wire, while the 4-wire cable has an added 3-way light switch hookup wire which is hot as well. The diagram below will give you a better understanding how this circuit is wired.