As current load of supply lines has recently been rising, copper cables are installed in wiring, while aluminium ones are changed - under such conditions aluminium superheats; that may lead to a short circuit.

According to the new standards nowadays three-core double-braided cables 4,5mm2 are used. In residential buildings during electric installation work concealed wiring is applied; in this case cable is recommended to be installed in corrugated pipes for the purpose of the wiring protection from mechanical injuries. In the case of wiring in social buildings cable is installed in cable-trunkings.

The main types of cable used for electric installation work, are:

PVC – is a flexible polyvinylchloride-sheathed copper cable, used for electric installation work as well as for low-tension equipment and household appliances;

VVG – is a power copper cable, used for residential and industrial buildings wiring;

ShVVP is a double-core copper cable, which is used mainly for electric appliances connection;

NYM – is a power single-core or multicore copper cable, used for stationary electric power supply connection.

When wiring accessories are being connected, each of them is earthed. A common mistake is earthing of a separate circuit not connected with the neutral wire of the network. Wiring without neutral earthing is possible in the case of using RCD (Residual current device).

Wiring equipment producers market in Russia is represented by the following leading brands:

Legrand (France), Merten (Germany), Gira (Germany), Berker (Germany), Jung (Germany), Fontini (Spain), Bticino (Italy), Lithoss (Belgium).

The quality of general construction and finishing works, as well as their due dates, to a great extent depends on the level of the preparatory works execution. At the prime stage, dismounting works are carried out, surfaces (floor, walls, ceiling) are buffed and priming takes its process; in the case of smooth surface a common primer (concrete, reinforced concrete, oil-paint remainders) the optimal variant for interior and exterior works is using primer incorporating Quartz filler, which provides adhesion of bond plasters to the substrate surface.

In the case of rough surface common primer can be used. If the work is executed in a dump room Aquastop primer should be used, as it prevents ingress of moisture into the brick (stone), wood and other surfaces by filling up the microcracks. After  priming of surfaces and application of mortars are completed, priming of the dried mortared surfaces is made in order to strengthen the applied coating before the following tile paving, paint applying, wallpaper hanging etc.

The production of modern top-grade building materials affords the opportunity of increasing the level of the general construction and finishing works. The quality of dry-mix mortars which include glues and assembly mortars, fillings, mixes for floor leveling and joints finish, plasters, and sealing compounds is specially important here. According to the prices and quality as well as  purpovses of use the materials are subdivided into three grades: A, B, C. Among the producers we can point out the following ones: Vetonit, Bergauf, Knauf, Weber, Osnovit, Petromix.

Finishing materials can be used for a range of purposes. For example, besides of plasters of general use, there exist decorative plasters.