In old houses, where wiring in most cases has developed its operational period, it often requires its replacement. A similar operation should be carried out if the apartment has a large number of modern household appliances. The fact is that in the buildings of Soviet buildings, mainly aluminum wires were installed, not designed for such a load. In any case, a separate line is drawn to each modern powerful device.
It is best to use a copper wire when replacing. To twist it with aluminum – not too good solution. The connection place will be very much heated and in the end will burn out. Therefore, when replacing it, pull the wiring into the apartment from the shield, which in most cases is located in the entrance. Consider how to make wiring yourself and correctly.
Installation technology
The first thing to do is, of course, to measure the distance from the rewinding box installed in the hallway to the shield. To do this, you can use a conventional roulette. The wire is bought with a margin, so that its length is enough to mount it inside the shield and box. It will be best to add two more meters to the obtained distance.
There is no need to stroke the wall in our time. PUE standards are currently allowing two more methods – the use of a corrugated plastic pipe, or a plastic channel cable. Both equipment will reliably protect the wiring from any damage.
If we talk about the wiring itself, then its choice also needs to be approached with all seriousness. The best option will be a three -core equipment with a section diameter of 4 mm. The value of the permissible cable current should be 35a. Its working properties are quite suitable for use in an apartment equipped with powerful household appliances.
If you decide to use the channel cable, you will need to cook screws and plastic dowels. It is best to extend the wiring through the corrugation. One end of it is attached to a specially provided wire inside. One person must pull by the conductor, and with the second hand to help the passage of the wire inside the tube. Hofra is attached to the wall with special clips. When buying them, you need to pay attention to the size.
Connection to the shield is made using special equipment. You need an automatic machine designed for a certain current force, RCD (usually 30ma), which is installed immediately after the meter, terminal, zero shinka, etc.D. This work can, of course, be carried out independently, but because of some complexity, you should still contact professionals.
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