Main Fuse Overload in Apartment Cage Connection Box - Causes & Solutions for Overvoltage

Question

Hello. I live in an apartment with such a connection box. In the event of overload, the main overvoltage in the cage crashes, and none in the apartment. What's the problem? Anyone see some error? [/ img]

Brivido · Answer

What overloads are you talking about? What is the pre-meter fuse? When was the installation replaced?

talkinglives · Answer

When I connect several devices to one circuit. The upstream fuse is higher than the residential fuse, so selectivity is maintained. Installation for over a year. But the apartment was empty.

mawerix123 · Answer

And where is the RCD for socket circuits :?: I bet there is no selectivity. You will reveal what is the type and value of the fuse that blows on the cage

Turysta_ · Answer

This behavior only on this one circuit? The rest of the circuits are working properly in the apartment? What security in the apartment on this perimeter, and what in the stairwell?

Adam_Bandit · Answer

Where do you get that confidence? Buddy, give details. Selectivity is confirmed not only by the rated current of the protections used, but also by the current-time characteristics.

dvdix · Answer

Gentlemen, I hope that my friend will forgive me for connecting to the old topic but I do not want to start a new one. Could there be such a strange situation at home (I'm not an electrician) that someone took the phase from the main fuse (three of them connected by a common wajha ) and this was the phase that he railed on to some kind of fuse from the bottom, let's say for a contact from the gas furnace. In my opinion, it is dangerous because once when I was doing something at home, I had the main switch turned off and the test tube was still lit, now I guess why. Can I move this wire over the main fuse? (I already did it when there was a breakdown in the estate and this phase was missing, but I'm afraid that I was jumping something).

kkas12 · Answer

Sorry buddy, but it can be seen from what you wrote. Because you are not difficult to understand what you mean, that's one thing. And the second question is why do you first rummage in an installation you do not know and then ask? Probably you do not even know whether the covering on these three joined by a common lever was given to the lower or upper clamps.

dvdix · Answer

It was given to the lower terminals, so it did not suit me with the cable that goes from the lower main clamp to the lower terminal of another fuse.

kkas12 · Answer

Perhaps this three-way protection is another recipient's pre-meter protection. And this "other fuse" is the pre-meter protection of your apartment. By switching to the upper terminal, you have made any short circuit in your place (most likely) also disconnect the voltage in that apartment. And vice versa.
The guest, for example: will not pay for electricity, so they will turn off the voltage and seal the protection. And you will be punished for rummaging where you shouldn't, because you will also be free from tension.

dvdix · Answer

Now I understand that I could do something with neighbors, but it is a detached house, anyway I will try to find out from an electrician who used to do here what and how.

kkas12 · Answer

Do you see how many inaccuracies are due to not being an electrician? So ask first and then start digging. And the best thing is to contact a competent person. Always.

Main Fuse Overload in Apartment Cage Connection Box - Causes & Solutions for Overvoltage

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