Three wire cable runs between the switches and 2 wire cable runs to the light. In this diagram power enters the fixture box.
In the above 3 way switch wiring diagram at each switch the black wire gets connected to the copper or black screw.
3 way wiring diagram with multiple lights. A 3 wire cable runs from l1 to l2 and 2 wire cable runs from there to the first switch. Click the icons below to get our nec compliant electrical calc elite or electric toolkit available for android and ios. A three way switch is built and wired a little differently than a conventional single pole light switch.
Three way light switches control a light from two locations such as from both ends of a staircase or hallway. This diagram illustrates another multiple light circuit controlled by 3 way switches. 3 way switch wiring diagram.
It is true that there are several wiring configurations for wiring 3 way light switches and all of the wiring configurations will depend on where the incoming circuit power is located and once that is identified the rest of the three way wiring connections are straight forward. 3 way switch diagrams for multiple light fixtures. Actually the diagram explains everything clearly while controlling by two 3 way switches with a two wirecable power supply as shown.
Remember only two wire cable with ground is necessary for the boxes atthe lights we see there. 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. So what you should see if you have correct 3 wire electrical cable romex is a black power white neutral and now a 3rd red wire.
Red and blue wires link traveler terminals of both switches. 3 way switch wiring diagram depicting all wires in the ceiling junction box. 3 way swith with multiple light wiring diagram with power source feed via light switch.
3 way switch diagram multiple light between switches 2 pdf 79kb back to wiring diagrams home. The electrical calc elite is designed to solve many of your common code based electrical calculations like wire sizes voltage drop conduit sizing etc. Wiring diagram 3 way switch with light at the end in this diagram the electrical source is at the first switch and the light is located at the end of the circuit.
The black and red wires between sw1 and sw2 are connected to the traveler terminals. As with the other diagrams on this page more lights can be added by duplicating the wiring arrangement between the fixtures. More than one light this diagram shows connections when the power comes into the first switch on to the second switch and then on to two or more lights switched by the 3 way circuit.
This 3 way light switch wiring diagram shows how to do the light switch wiring and the light when the power is coming to the light fixture. These diagrams illustrate how to wire a pair of three way light switches in three different situations. The black hot wire connects to the far right switch s common terminal.
Regardless of what 3 way switch wiring diagram you re following you ll need to use a 3 wire cable to connect the two 3 way light switches. Here the source and the fixtures come before the switches.