Three Way Light Switch Schematic

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.

Three way light switch schematic. This might seem intimidating but it does not have to be. Wiring a 3 way light switch. 3 way switch wiring diagram line to light fixtureline voltage enters the light fixture outlet box. Two very old three way switches are depicted in the photo above.

Take a closer look at a 3 way switch wiring diagram. Interested in a 4 way switch wiring diagram. This 3 way light switch 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. 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.

3 way switch schematic wiring diagram. 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. Two very old three way switches. This is only a wiring schematic and not the actual wiring method used for 3 way switch installations.

Pick the diagram that is most like the scenario you are in and see if you can wire your switch. No longer allowed after 2011 nec if no neutral wire in switch boxes 3 way switch wiring diagram light fixture between switchesline voltage enters the first 3 way switch outlet box light fixture is located between switch boxes no longer allowed after 2011 nec if no neutral wire in switch boxes. Below is a simple 3 way schematic that can be applied to all three way electrical light switch connections.