How to change zero to phase in the light switch?

Lexa asks:
How to change the phase in the wiring of the ceiling and zero (brezhnevka) to make a break (switch) in phase? It is necessary that when the LED is turned off, the voltage is removed and the crystals do not dimly glow ...
The answer to the question:
Hello! As well as in Khrushchev, Stalin and the new building. First, why do you have zero torn at all? Secondly - look for the switch box in which the switch with the lamp is open and interchange the phase and zero, so that the phase goes to the switch.
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