Wiring – How to wire three-way switches to light fixture with a fan

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I have a light fixture with a fan, and two switchboxes with space for two three-way switches each.

I would like each switch box to have two switches, one which operates the fan and the other which operates the light. How can I wire this correctly so that two switches from different boxes operate the light, and the other two switches in different boxes operate the fan?

3-way light switch with fan

Best Answer

You can't. You don't have enough conductors between the switches. It takes 2 "hot" traveler wires plus a neutral and a ground to do a single 3-way "traveler" circuit; that's 4 wires total. The neutral and ground can be shared between multiple devices, so to do what you want you need 2 more traveler wires for the other device (fan).

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