Many residents of city apartments familiar with the situation when in the socket you want to connect to ground, and the desired terminal "land" is not on it (pictured below).
No grounding contact and the corresponding circuit - a characteristic feature of panel houses of old building, called "Khrushchev". Professional electricians solve this problem on their own, instead of using other means of protection grounding.
Far from electricity people even try to directly connect the ground wire to the radiator. The latter option is quite unacceptable, since in this case is a threat to all tenants entrance, apartments which are connected to the same riser.
A sound approach to the arrangement of the ground
Proper Grounding in apartment urban homes is only possible in the following versions:
- installing a special protected circuit emergency shutdown device (called RCD);
- use a separate grounding wiring conductors provided in the new buildings.
The first method is suitable for the old housing stock, where the power cable there are only two wires - and zero phase (special earthing bar none).
Method №1 - Connecting the RCD and cable replacement
Really protect the residents of city apartments where the wiring can not accommodate a third grounding conductor can only be by means of the RCD.
Its operation when a microscopic leaks in the human body is so rapid that the fault current never reaches a dangerous value (it takes a few milliseconds).
This device is installed either on a common line liner immediately after the meter (see photos hereinafter) or each branch to the corresponding linear automaton.
Chance of a comprehensive approach to solving the problem, in which it is installed at both locations. Its use is still considered to be a temporary measure, which does not exclude the need for a full ground arrangement. To do this, you must seek from the management company updates the existing wiring, which must be necessarily grounding conductor.
Useful note: Without waiting for the issue will be resolved with the introduction of three-core, each apartment owner can independently update the wiring.
To do this, he would need to dismantle the old 2-core aluminum wire and lay cable VVG, for example, contains three copper wires. By the time the liner to the house of the new power supply cable, this apartment will be ready for connection.
Method №2 - Construction of remote loop
Another approach to solving the problem - take decisive measures related to "forcing the" through the common collection solutions for the installation of His remote circuit is usually mounted near the entrance to the staircase to the wall at home. A general view of a grounding structure is provided below:
the following steps need to be done for its production:
- First prepared three steel rod with a diameter of 2-3 cm and a length of 2-3 meters, which are hammered into the ground at the corners of an equilateral triangle.
- Then they joined in the welding of steel bridges with a standard size of 40x4 mm.
- In conclusion, one of the corners is in the form of removal or copper bus wires of diameter not less than 6 mm, stretched to all floors of the entrance.
As a result, each of the access site will be a separate block, from which all the tenants will be able to reach up to his flat ground bus. Make it possible to braid the old cable of appropriate length.
The main thing in the regeneration of the self-made ground - is reliable contacts in places of joint conductors and circuit design elements.
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Also, for more information on grounding the apartment you can in the article - https://www.asutpp.ru/zazemlenie-v-kvartire-svoimi-rukami.htmlon my website.