3 Way Switch No Neutral Wire

3 Way Switch No Neutral Wire. These diagrams illustrate how to wire a pair of three-way light switches in three different situations. A switch box with no neutral loop will usually only have three wires (see image below).

home automation - How can I use a Z-wave switch as a 3-way ... (Clifford Tucker)

Because switches do not have white neutral wire connections, the neutral wires at the switch boxes are simply joined together so they pass through. Adding a neutral wire for a smart switch is not an easy task. Could one of the switches be defective?

Three-way switches can be wired in a number of different ways, depending on where they are located relative to the light fixture in the circuit cable runs.

The white neutral wires are wire-nutted together and do not connect to the switch.

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Line voltage enters the light fixture outlet box. No neutral wire in your switch box? This way you do not face.