Marking of the cable VVG: decoding. VVG cable: transcript

Electric motors and appliances in private homes and onThe plants are connected to electrical wiring by various types of cable. The type of current in the wiring is variable. Wide-range cable has found wide use. Project organizations most often lay this wire in the specification of projects. Deciphering VVG-wires helps manufacturers when selecting the right material. Special designations make it possible to distinguish types of wires. Marking the cable VVG, the decoding of which is applied to isolation, literate electricians will tell everything.

What are the types of cable VVG?

The abbreviation of the cable decryption carriesinformation on its manufacture. It informs you that it is recommended to connect and in what way lay, outdoor or underground, where it is allowed to use and what permissible air temperature is recommended.

Sale of materials used inpower supply, and a huge range of wires by type of insulation and design, provide the opportunity for the buyer to choose the products that he needs. A novice-electrician and ordinary consumer will be interested to know how many varieties of brands of VVG cables with decoding are available on the sales market.

The cable protection from the open fire was created by manufacturers of cable products. The fire insulation of VVG is invented and applied. Below is the layout of the modifications:

• ВВГнг;
• VVGng FrLs;
• ВВГнг Ls;
• VVGng Hf;
• VVGng FrHf.

Each letter in the marking and name has a decryption, VVGT, VVG ng is not just a set of letters. Therefore, it is necessary to read the notation.

Let's look at the notation

The group gasket is made using the Hg current lead. The output material is VVG Png, the decoding of which indicates that copper veins have lived. Modification of the VVGGN wire informs us that this type is not afraid of fire.

The cable name ВВГнг Ls stands for information that during the fire the insulation of the wire allocates a minimum amount of smoke.

Cable VVGng FrLs with open flame does not contribute to the fire. Because of the melting insulation, smoke is minimal.

The next type of product is the decryption of VVGng Hf. When it is exposed to heat, for example, during a fire and melting of insulation, no gases are present. The wiring does not corrode.

The last type of wire VVGng FrHf has all the best characteristics of the above cables.

Insulation of the products

To the insulating material used inproduction of cable products, there are special requirements, including from the fire department. Material PVC (PVC) conceals one distinctive feature in relation to other polymers used for the manufacture of plastic goods. PVC products do not interact with fire. Due to this property, polyvinyl chloride is used in the manufacture of insulating coatings for cables.

Materials for the manufacture of cables:

1. The main type of insulating materials VVG - two-layer insulating coating. Material of PFC (polyvinylchloride). There is no additional insulation.
2. The insulation of the copper wires of the cable VVGng is made of non-combustible PVC materials.
3. Halogen-free PVC, used as an insulating material for the VVG Ls wire, does not emit smoke when melting. Used for the installation of electrical wiring, in crowded places.
4. Pulling the cable where it is possible to ignite it,It is carried out from mark ВВГнг FrLs. The insulation is fireproof and does not emit dangerous smoke. The cable with decryption VVGng FrLs is used for closed and open installation with a high degree of fire danger.

Understand the labeling of the cable. We will become acquainted with VVG-decoding of the wire:

• P - polymer wire insulation.
• B - polyvinyl chloride.
• PV is a group of materials based on polyethylene.

The decoding of the following letter designation allows you to find out the composition of the cable insulation.

• B - PVC outer insulation.
• Шв - protection of cores in the form of a hose.
• П - external polymer insulation.
• Шп - external insulation made of polyethylene hose.

Protection of the VVG cable (decoding below) from mechanical damage has its designation.

• B - armored cable with hard coating.
• D - the cable is flexible. There is no special protection.
• VVG APG wire a, the decoding of which is presented above and clearly indicates its purpose.

Cable cross-section and its meaning

When installing electrical networks it is important to correctlyselect the cross section of the current lead. The transmission of electrical current depends directly on the section of the wiring. Engines and appliances connected to the grid consume electricity. Electrical wiring when passing current on it begins to heat up. Heating the wiring with an incorrectly matched conductor cross section can lead to an involuntary fire. Wire cross-section must be taken at thirty percent more. There are current losses in the cable, which must be provided in advance. Having completed the hidden wiring in the house, it is difficult to replenish losses in the future.

The device VVG APG a

The cross-section of this type of cable is from 1.5 to 16 squares. The number of wiring is two or three.

Identification of the symbols of wires:

1. B - veins in PVC insulation.
2. In the (second) - PVC jacket of the cable.
3. D - no cable protection.
4. П - the arrangement of veins is parallel, flat.
5. Ng - combustion of insulation is not supported.

Cable cut VVG-Png A:

• lived copper round form single-wire first class;
• insulation material - polyvinyl chloride;
• colored wiring;
• PVC-sheath, reducing the properties of combustion.

The main use of this type of cable is in the transmission and distribution of AC power at a frequency of 50 Hz, with a power of 0.66-1.0 kV.

Cable ВВГож

A large demand in the sphere of cable production is caused by a cable with a cross section of 3x4 brand ВВГож. The composition of this copper cable includes veins covered with PVC insulation.
Explanation of VVG Auger:

1. B - vinyl insulation.
2. In the (second) - the shell is vinyl.
3. D is naked.
4. Auger - single-wire veins.

Cable construction VVGozh

The conductor conducting current, copper, first or secondclass GOST 2483. The form of the vein is round or sectoral. Belt insulation from PVC plasticizer, burning on an open fire insulation is reduced. Twisted conductors of a cable from two, three, four and five veins round the core from PVC. The outer sheath of the cable is made of PVC plasticizer, which does not support combustion.

Cable insulation made of polyvinyl chloride. Cable harnesses of different colors. White or yellow. Blue and green. Black or brown, red and crimson.

Scope of cable VVG Png a

Cable operation is permitted on the ground, in rivers and lakes. Suitable for temperatures from -50 ° C⁰From to +50⁰FROM . The height of the gasket above sea level is allowed at an altitude of 4300 meters. You can lay the cable in the ground, water, in the air, that is, on poles and walls of buildings and structures.

All of the above characteristics apply tocable VVGozh, the decoding of which tells us that the wire is made of copper veins with a cross section of 3x4. Use it in the northern regions and in areas with a temperate and tropical climate.

Councils for the construction of electrical networks

Installation of the cable with the decoding of the VVG can be carried out bywalls of buildings and structures. The gasket is carried on poles and pendants on cables. Use of this type of cable is allowed where there is no danger of fire. Pave it better on plastered walls or walls made of plasterboard.

If there is a risk of mechanical damage to the cablemust be protected. An excellent protection is the pre-installed steel pipes, in which the wire is wound. The most justified is a gasket in wooden houses. Corrugated hoses, which protect the wiring, are widely used in construction. Various cable protection channels are also used. Stacking products with decoding of the VVG cable is not recommended. For this purpose, the use of the VVGGG conductor is preferable. It is designed for hidden wiring. There are recommendations and regulations, in which the rules of installation work using the cable VVGng are painted.

Rules of outdoor work with cable products

When laying the VVG current conductor in the ground,observe strict rules. There is no protection for this type of cable. The use of concrete boxes, cable channels and pipes prevents mechanical damage to the cable. Widely used now is signal protection in return for red brick used earlier. The protection is made in the form of polymer plates, which have excellent non-destructible characteristics.

Pour a sand pillow into the trench. On it lay the cable, on top of which pour and compact the ground. The thickness of the sand layer should be at least 20 centimeters. Once the cable is padded, the protective plates are laid, which are also covered with sand. An alarm tape is placed on top of the sand, warning of the presence of a padded electrical cable.

Stacking of armored cable - the most correctsolution for excavation. The cost of its laying is higher than the cost of an VVG cable. The service life is the same, but the guarantee of protection against damage on the armored wire is much higher.

Having read this article, a simple buyer,not the expert, correctly will pick up a necessary cable. Based on the fact that the market today offers a variety of types and types of cable, without certain knowledge in this area to determine the choice can be very difficult. If there are still doubts when buying, it is better to consult the seller of the electrical wires. This is very important, because the quality of the wiring depends on the safety of all tenants.</ strong </ p>