The last house I built for my family in Amberley Village, Ohio had four switches in the kitchen controlling a few lights. The common terminal of the second 3- way switch connects to the light fixture s. There are 2 variations of Dead End 3ways; extending the switch leg over to the common as shown in the photo above, or extending the hot over to the common as described below. Find , , Professionals, and Services in Canada, United States, and United Kingdom! The user of this information is responsible for following all applicable regulations and best practices when performing electrical work. Be sure to attach a bare copper wire to the green screw on the switch. On this page are several wiring diagrams that can be used to map 3 way lighting circuits depending on the location of the source in relation to the switches and lights. A, also wrap black tape around the white wire from the switch to the light.
They all must be between the two 3-way switches. At each light it's connected to the neutral terminal with a pigtail and at the last light, directly to the fixture neutral. 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. Follow along with the mouse pointer as we go through this. Replace the covers for the switches, screw them into place, and turn the power back on to be in business. The travelers of each switch are connect together using cable C4 taped white and red wires. This will make them easier to attach to the actual switches.
Verify the circuit is wired correctly using the following guidelines. Tip:White neutral wire from the power source is connected directly to the light fixture. A 4way cannot be added to this method. 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 red wire which is hot as well. If you were given a choice to move your computer keyboard to one of 2 locations which would you choose; 1 Upside down, up on the ceiling by the light or… 2 On the wall by the switch. One note about this test, if you are dealing with a smart electronic switch or timer, this procedure will not work to test switch function.
The traveler terminals will always be connected from switch to switch. Wiring a 3-way switch is a little more tricky than. Where are Three Way Switches most commonly used? Twist the stripper or rotate it 360 degrees, sliding the insulation off the wire as it breaks loose under the cutting blades. This site is merely a collection of how some people do home improvements. Verify the circuit is wired correctly.
Connect the black insulated wire to the shunt or common terminal screw of the switch once again, the common screw terminal is the different colored screw from the rest of those on the switch. You want to zig-zag them, so they come about a bit like an accordion. This method also creates an electrical hazard; beginners will think the wiring in the light box is dead when the light is switched off, but one traveler wire will still be hot unless the circuit breaker is turned off. Connect 3 wire cable in the second switch box to the switch. Wrap the wires tightly around the screw and use a screwdriver to tighten the screws.
Light switch at one end, lights in the middle, light switch at the other end and its simple. The extra connections in this method mean you have to; get a ladder, go up the ladder, raise your hands to the ceiling, strip, twist together, connect and cap the traveler wires. Be sure the circuit is completely dead! If you believe your circuit is wired correctly and the lights still don't work, one or more of the switches may be defective. At the dimmer, the black wire is connected to the common wire and at the other end, to the hot terminal on the light. What Wires Go On the Brass Screws? Now for wiring, lets assume you're looking at the switch just like it shows. The most likely cause of circuit failure is an error in the wiring arrangement.
It should also help in understanding the functions of each type of switch. Again, connect all ground wires as previously described, if not already completed. Cap the grounding conductors at each switch box. See color key in each figure. In order for a 4 way circuit to work, the 3 way switches must be wired properly at the beginning and end of the path. Notice: Installing additional 3-way switch wiring should be done according to local and national electrical codes with a permit and be inspected. If you want to install a 3-way light switch, however, the job becomes a little more complicated.
The extra connections in this method mean you have to; get a ladder, go up the ladder, raise your hands to the ceiling, strip, twist together, connect and cap the traveler wires. While also showing above in the circuit having three insulated conductors as black as hot, red as switch wire or called traveler and white as common wire as also shown when light is connected to both black and white wires. You can usually use an electrical tester to be sure. If a larger load is to be connected, the appropriately larger sized wire and circuit breaker or fuse must be installed instead. This switch works in combination with two three-way switches to control electricity to lights and receptacles from three locations.
It is very important to ensure that the screw is extremely tight, because a loose connection can lead to an electrical fire. If more lights are added, this wire would be spliced to the fixture and to the white wire running to the next light. Two Lights Between Two Three-Way Switches: Power Through Switch These lights between switches have the electrical power coming through a switch. This method is commonly used by professional electricians. Turns out it was 3, the Radical 3Way, with a few more items added on for confusion.