Why is an electric device shocking in only one room?

Boris asks:

Hello, I already asked a question yesterday about the fact that a manicure hood (fan) is beating an electric shock, but only in the kitchen. I disassembled all the sockets, I can tell in more detail. Two wires are connected to all outlets in the apartment. There are 5 automatic machines per apartment, 2 automatic machines for 4 sockets and 1 for lighting are connected to the kitchen.

In addition to the kitchen, in all other rooms, the fan (its metal grill) does not beat with electricity.

The fridge in the kitchen barely gnaws electricity, in one place - in the corner of the door. But I think the reason is not in it, I turned it off from the outlet, but the fan still beats with electricity.Turned over the fan plug, does not help.

I don’t know, maybe it’s two automatic machines that go to different sockets in the kitchen?

And tell me, please, is it bad if the apartment is without grounding. what could be the consequences? And is the electrician who did the wiring to blame for this? Thank you very much in advance!

The answer to the question:

Hello! Grounding in apartments is mandatory, according to the EMP, but this applies to buildings built or reconstructed after 1997, i.e. to new buildings. Therefore, in most old apartments there is no grounding in sockets.

An electrician may not be to blame, if there is no grounding in the house, then where would he get it from? As for the consequences of the lack of grounding, they consist in the fact that you have a refrigerator, an exhaust fan, and for the sake of curiosity you can put one hand on the battery, and the second touch the body of the system unit - it also beats.

But imagine how much you will be shocked if there is a malfunction in the device and there is a good leakage of current to the case ... All 220V will be on it, this can happen if the heater, kettle, washing machine or water tank, as well as the electric motor of the same washers and refrigeration compressors break through on the case - this happens over time and quite often.

Automata, sockets and cable do not refer to the fact that the device may beat on the case, but may not beat. If the device is faulty, it will be shocked everywhere. Your situation is really entertaining and somewhat absurd. Can you measure voltage in outlets? Maybe something is connected with this, is there a single-phase or three-phase input in your apartment? By the way, it can be induced voltage from something, which just explains why the rest of the rooms are fine, but not in the kitchen.

P.S. To continue the dialogue, you do not need to send the question again - write in the comments, thanks for understanding!

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