I have a 2-way switch connecting to a light and it works properly. When opening it up, it has 3 inputs with the same wire color. I don't know the setup and I wish to know if there is a neutral in one of them and how were they wired.
I did a simple test for "live" among the 3 wires, these are the result. by using a simple "testing screw driver" and testing on the switch
- When the light is off (case 1), wire 1 tested to have "live" signal, wire 2 and 3 do not have.
- When the light is off (case 2), wire 3 tested to have "live" signal, wire 1 and 2 do not have.
- When the light is on (both case), 3 of them have "live" signal.
Given the wiring diagram from Electronics Hub - How a 2 Way Switch Wiring Works?, it doesn't make sense to me.
How can it be and what is the setup? thank you