Can the equipment burn out due to the fact that the zero in the shield was turned off?
Hello. I observed a voltage drop on an incandescent bulb. The washing machine, telephone and set-top box are out of order. The electrician called, he measured the voltage on the meter with an instrument, and then in the outlet. It turned out to be 235-240 V on the meter, and 260 on the socket. I shrugged and went back to the meter, found that the “zero” was off there, turned it on and checked the sockets: the voltage was equalized. What can cause a “zero” trip, and is this the reason for the failure of electrical appliances? Sorry for the incorrect explanation, but I hope to get an answer. Thank.
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If zero was completely turned off, then the electrical appliances in the house would not work and, accordingly, would not fail. If voltage fluctuations were observed (blinking of light), then most likely the reason was a bad zero contact at the point of its connection. The electrician tightened the contact and, accordingly, the cause was eliminated. Household appliances burned out due to power surges, which were due to poor contact. To avoid such situations, invite a specialist to check the condition of the wiring as a whole, including the condition of all contact connections.