Specifications VVGng cable

What does the marking?

First of all, you need to provide to you the transcript labeling guide.

Photos exterior cable

So abbreviation enables us to understand the following characteristics:

• «A» in the beginning is missing, then the strands of copper;
• first "B" - isolation of living material, in this case PVC (polyvinyl chloride);
• second "B" - the material of the outer shell, which in this case is, again, PVC;
• «D» - gives us to understand that there is no additional protection conductor;
• prefix "ng" means that the cable is flame retardant.

should also be noted that there are modifications to the current conductor having the prefix "ng-LS» - represents a low smoke emission and gas, "ng-HF» - does not emit corrosive gases during combustion.there are their own improvement, in turn these two modifications - fire, symbol that the code «FR».As a result, the product can be marked as follows - "VVGng-FRLS», which is not difficult to decipher.

encourage you to learn more about the transcript labeling wires and cables!

difference from the base case

Often electricians novice wonder what is the difference from VVGng VVGng-LS and the traditional version - VVG.

Based on the above labeling, you can easily answer this question, namely:

1. VVG - has no fire-retardant and self-extinguishing properties, ordinary PVC insulation.
2. VVGng - insulating layer contains halogen chemical elements, the purpose of which - the obstacle combustion process.
3. VVGng-LS - when creating the shell of the conductors used halogen-free PVC, which during combustion is practically does not emit smoke.

for the home environment, and especially if you have decided to implement the wiring in a wooden house, be sure to purchase the latter option is the most secure.

Key Features

So, we turn to the most interesting part of the article important - Review of Performance VVGng cable.

design

conductor may consist of one or of several veins, up to five.The acronym number of wires can be determined by the first digit.In turn, the core may have a circular or sector-shaped (a visual difference between the two kinds of the picture).

Another feature of the conductors, they may be stranded or single-wire, class 1 and 2 according to GOST 22483. Wire Colors can be represented by a full or partial isolation of staining - strip width of 1 mm along the conductor.Core colors VVGng cable wires meet all modern standards.If multi-core cable, the grounding contact can have a smaller cross section than the rest.

Weight

As for weight VVGng cable, it differs depending on the total cross-sectional area.Varies weight of 1 km cable from 28.5 to 10256 kg.

details see the description of all the weight values ​​in the table, you can:

cross-section

outer conductor diameter, and correct to speak of a cross-section of the cable VVGng can range from 1.5 to 240 mm2.All currently existing size and range we provided in the table:

The apartment house and most of the following dimensions VVGng cable used:

• for sockets - not less than 2.5 mm2
• least 1 For lighting,5 mm2
• to connect a powerful home appliance separate from the terminal box - not less than 4 mm2.

for proper selection of the diameter of the cable cross-section is recommended to carry out the calculation power and current.Formula fairly simple design and thus not work you take more than 5 minutes.

Technical and operational performance

main parameters of the power cable are VVGng:

• nominal (operating) voltage of 660V and 1000V;
• frequency of 50 Hz;
• continuous allowable temperature to which the cores can be heated during operation - no higher than 70oC.Thus not more than 4 seconds conductors can be heated to 250 ° C (e.g., short circuit).Combustion occurs at a temperature above 400 ° C;
• working temperature of cable VVGng can range from -50 to + 50 ° C, this despite the fact that the humidity does not exceed the 98% mark;
• laying conditions at ambient temperatures not lower than -15 ° C;
• emergency operation is not more than 8 hours a day, while for the entire useful life of up to 1000 hours;
• construction length: 450 m with a cross-section of 16 mm2 and 300 m for 25-70 mm2 and 200 m in diameter if the product is 95 mm 2 or more;
• smallest permissible bending radius is 7.5 the total cross-sectional dimensions for solid conductors and 10 sizes for stranded;
• electrical insulation resistance of 12 megohms / km at 20 ° C and the cross-section of 1.5 mm2.With a diameter of 4-5 mm 2 resistance is 10 megohms / km, at 6-9 mm2 - 9 MW / km, and if cross-section of more than 10 mm2, the resistance will not exceed 0, 005 MW / km;
• product life of 30 years, while the warranty period to 5 years, and if not properly stored up to two years.

Here, actually, and all the most important technical characteristics VVGng cable, which you need to know at the stage of selecting a conductor for its installation in the house and on the street.

Scope

Based on the above operating conditions and characteristics can be seen that the cable can be used in both industrial and domestic needs.Regarding the latter, then there should once again draw your attention to the fact that this guide is the best option for house wiring.

We recommend to use it in the following cases:

• when installing wiring in the bathroom;
• in the cornice plasterboard ceiling;
• under the wooden paneling of the walls;
• outdoor (street) pads.

As a method for wiring, it is possible to choose a hidden, and open lines lining.In the latter case, the conductor is better placed in a box-channel or corrugation.

Please note that VVGng to lay cable in the ground is not recommended, becausefor it is better to use an armored version that allows to provide reliable protection against rodents and mechanical damage.

Hersteller

very difficult Among the manufacturers to determine which one is better, becauseforgery can be found at every turn.We recommend that you as possible to give preference to such a cable factory VVGng as "Kolchugino", "Energokabel", "Podolskabel", "Sevkabel" and "Moskabel".

For a variety of negative customer reviews Orlovsky products better recheck the cable plant, asoften marking values ​​do not correspond to reality.To independently verify the quality, it is recommended to read the instructions to determine the cross-section of the cable by hand.And finally I would like to point out that it is better to compare prices in the Internet on the official websites of the company, so as not to run into a fake, which will cost less than the original cost VVGng cable.