Where in the two-key light switch is zero and earth?
There was a problem connecting the Legrand two-key switch.
Typical house of the 1605-AM series, a triple cable in a white vinyl braid comes out of the box.
The old switch was removed, the location of the wires did not remember, unfortunately. I found the phase with a multi-tester, but I just can’t understand which of the remaining 2 conductors is responsible for zero, and which is for grounding (and is there any grounding at all, since the house is quite old, built in 1986). There are no photos yet, if necessary - I’ll do it. I ask for your help in determining the purpose of the wires
Hello! And why do you need zero and ground for a two-gang switch? These are the outgoing wires on the chandelier. We talked more about the wiring diagram for the two-key switch in this article