Notice: Installing additional 3-way or 4-way switch wiring should be done according to local and national electrical codes with a permit and be inspected. Connect all ground wires as previously described, if not already completed. Here are the instructions for wiring: Wiring a 3-Way Switch To use 2 switches to control the same fixture, you will need to use two 3-way switches. This is a scenario where you have 2 light switch locations that control a single light fixture unless you add more to the end. However, it can be done with a little patience and attention to detail. The electrical source is at the first 3 way switch and the hot wire connects to the common there. To test a 4 way switch, connect one probe to one traveler terminal in a pair and the other probe to one traveler terminal in the other pair.
That wasn't so bad now, was it? A dual pole switch is used primarily to turn one 240V circuit on and off, much the same as a single pole switch is used to turn one 120V circuit on and off. The traveler wires from the two switches pass straight through the fixtures via cable C3. If the user is unable to perform electrical work themselves, a qualified electrician should be consulted. Using the needle-nose pliers, form a clockwise loop in the free ends of each conductor in each of the switch boxes. Three-wire cable runs between all the switches and 2-wire cable runs to the light. Twist the two white, neutral wires together in each box and twist on a wire nut. Make sure you use the power wire.
This article has also been viewed 107,912 times. Just read it slowly, take a few breaths if you have to, and everything will be fine. For example, you may want to control a ceiling light in the basement from the top of the stairs, from the bottom of the stairs, and from a door leading to the outside. Keep in mind that there has to be enough room for the device box mounting wings to turn out and draw up against the inside surface of the wall to secure the box in place. Go back and watch the video to see what wires go to what screws. Take all three ends and hold them together, then twist on the wire nut so they are all securely fastened together. Make this splice the same as you did for the neutral except you don't have to tape this one.
The presence of wires means that you will proceed very carefully to not damage those wires. Cut off sheathing and any brown paper you may find inside the sheathing. If you want to install a 3-way light switch, however, the job becomes a little more complicated. Install a 2 wire cable between the power source outlet box, electric panel, etc and the first switch box. The most likely cause of circuit failure is an error in the wiring arrangement. If one switch is up and one is down, the current reaches a dead end, no current flows and the bulb is off top left and bottom left.
Finally, run the last 2-wire cable from the second switch's black screw to the light. Color the end black with black paint or a black marker to indicate it is hot. Connect the hot wire from the source to the common terminal on the first 3-way and the hot wire from the lights to the common on the other 3-way. Hook the loop around the contact point and tighten the screw in a clockwise manner. If more lights are added, this wire would be spliced to the fixture and to the white wire running to the next light. You can have as many 4-way switches as you like in a circuit to control lights from as many locations or entries into a room as you need. Here the neutral connects to the light F1 and is spliced through to light F2.
This is a 3-way switch. Pick the diagram that is most like the scenario you are in and see if you can wire your switch! If the meter shows continuity with the toggle in one direction and not the other, move the probe from that traveler terminal to the other one and test again. On a dimmer like this, the common wire is usually black and the travelers red. Put one lead of the multimeter on this post. Quick 4-Way Light Wiring For a 4-way light circuit to work, you need two 3-way switches and at least one 4-way switch. You use a 3-way switch to control one, or more, lights from two different locations. There is no way we can anticipate every situation and we do our best to inform of any risks for each job.
Also, rather than having two terminal screws like a conventional single-pole light switch, a three-way switch has three. Common practice in wiring a multiswitch circuit is to use two-conductor black and white cable from panel to the first switch, and then three-conductor black, red, white cable between pairs of switches. Things You'll Need Install the four light fixture boxes in the area that you want to illuminate and secure the light switch box near the entry door to the room. One 3 wire cable originates at the first switch box and has its white insulated wire as a neutral. First, connect all ground wires as previously described. Preparation for Wiring 3-Way Light Switches Application: 3-Way Light Switches Skill Level: Beginner to Intermediate.
Additional Comments: Great website — clear diagrams and good information. Each pair of traveler terminals should be wired to the traveler wires from one of the 3 way switches in the circuit. The same for a 20 amp circuit: 20 X. The neutral is spliced to the white wire feeding the first fixture, via cable C1,where it is spliced to the neutral of both lights. Repeat on the other end and run it into your second switch box.
The black and red wires running between the switches are all used as travelers in this arrangement. At each light it's connected to the neutral terminal with a pigtail and at the last light, directly to the fixture neutral. This site is merely a collection of how some people do home improvements. A 4-way switch will have four screws plus the green grounding screw. This site is merely a collection of how some people do home improvements.