Why, when turning on powerful devices, does the voltage drop in the apartment?
Hello, in my apartment when I turn on the vacuum cleaner (1000 W) or the kettle (2000 W), the voltage drops from 220-222 to 215-217. At the same time, LED lights shine weaker. On the stairs in the electrical panel, a two-pole automatic machine 25A, from it to the NYM apartment panel 3 * 4 mm, further:
- Difavtomat 16A, NYM 3 * 1.5 cable to the washing machine.
- Automatic 16A, NYM cable 3 * 1.5 the right side of the apartment (sockets, lighting).
- Automatic 16A, cable NYM 3 * 1.5 the left side of the apartment.
- Automatic 16 or 25A, NYM cable 3 * 2.5 kitchen sockets.
- Automatic 16A, sockets at the front door.
Connection in distribution boxes twisting (PPE caps). Please tell me what is the problem and its solution? Thank.
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Hello! According to the description of your wiring - everything should be fine. To understand the cause of voltage drops, you need to determine how things are in other apartments connected to this phase (riser). If they have the same drawdowns, then the matter is not in your wiring, but as the network of the supplying organization - contact your service provider. If only you have such a problem, you need to find the drawdown, for this you need to measure the voltage along the line at the junction points. If you find a drawdown, you need to redo the connection, eliminate oxides or poor contact. If this does not help, there may be a problem in the cable between the distribution boxes. There can be no more reason.