On both wires of the switch shows the phase, the lamp does not turn off
The problem is that there is a ceiling lamp that turns on from a conventional wall switch (single-key switch). By some wonderful miracle, the lamp stopped turning off - it is constantly on. Does not respond to the switch. By changing the switch, the problem was not solved.
There was a phase on both wires, and on the lamp itself, phase and zero as expected. As I recall, from the flap the zero went directly to the lamp, and the phase to break to the switch (this was before the problem). But now the switch turned out BEFORE and AFTER the PHASE rupture (as in the photo).
I checked everything in the shield, everything is fine. Automatic machine, new. The walls were not hollowed, the wire in the wall was not touched (there are no neighbors, a private house). KZ did not seem to be there. What to do? Where to look for a problem? I really do not want to hammer the wall (
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Hello! In the distribution box, look - maybe something is bare and the phase from the switch touches the usual phase. Nothing else to suggest.
the switch wire is closed or pinched with a metal bracket during installation or poorly insulated in the junction box and touches there
In the distribution box, the conductor that goes from the switch to the lamp has contact with the phase conductor. This eliminates the presence of a switch in the circuit.
Possible Cause: 1. During installation, the wrong brand of electrical tape was used. 2. A badly twisted connection (poor contact) led to overheating of the connection.
With prolonged heating, the electrical tape melted and a short circuit occurred between the cores of the pair (switch ignore). Use a special electrical tape for insulation!
Be careful when opening this box. A short circuit with a socket pair is possible (in the best case, it will beat AB.)
Good luck and success !