Damage to the shield on the stairwell
Hello, I have a question for you - this afternoon my sister complained to me that for the second day in a row the smell of ozone air was heard on the stairwell, the light in the apartment was not strange but would not fluctuate. From what I heard, I concluded that powerful equipment works, the contacts in the shield are weak and a spark is generated there. When I came to her and looked at the shield, there was nothing “dangerous” there. There are no fused wires, the contacts of all the packets, the zero contacts were in order. The smell of ozone air disappeared during lunch hours. Please tell me what it could be and if this happens again, what should I pay attention to? Thank you very much in advance.
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Hello! Do not think that smell from the ventilation?
The thing is that the neighbors are at a loss what a nonsense such a case is. It came to registering the emergency call, only after the termination of such defects, the registration had to be canceled. My case can be called a workout for the mind of electricians professionals.