three way switch wiring

I’ve seen California three ways and understand the wiring. But I’m curious what would be the reasoning for doing it as opposed to a traditional three way wiring?
 

480sparky

Senior Member
I’ve seen California three ways and understand the wiring. But I’m curious what would be the reasoning for doing it as opposed to a traditional three way wiring?
You can run three wires from the house to a detached garage, have a 3-way between them, and still have constant/unswitched power in the garage for lights, outlets, the door operator etc.
 
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