- Description of the construction
- Operating environment
- Application area
- Best manufacturers
Description of the construction
Among the design features of the PVA wire are:
- number of cores - 2, 3, 4, 5;
- outer diameter of cores in the size from 5,7 to 13,9 mm;
- cross-section: minimum - 0,5, maximum - 25 mm2( the first and last standard size is used extremely rarely);
- insulation of cores - PVC, in fact, as well as an external protective shell;
- strand structure - copper, multiwire, flexible( class 5 according to GOST 7399-97);
- color marking of the wires is present and meets the standards;The
- mass ranges from 54 to 256 kg / km.
You can see these parameters of the PVA wire in the table:
Operating conditions for
Among the main operational parameters, PVA wires are:
- operating voltage( nominal) up to 660 V;
- frequency of electric current 50 Hz;
- operating temperature from -25 to + 40 ° C, while the electrical installation can be carried out at a temperature not lower than -15 ° C;
- the maximum temperature of cores is not more than 70 ° C;
- service life up to 10 years, with a warranty period of 2 years, and if the conductor will be used with frequent bends, the service life may be reduced to 6 years;
- service life of 30,000 cycles or 60,000 movements( in this case bends) at rated voltage.
It should also be noted that if the letter "T" - PVS-T is attached to the abbreviation, this means that the wire has a tropical design that makes it resistant to mold damage.
Visual video overview:
graphic model Scope of application
As for the field of application of the PVA wire, here it is necessary to dwell in more detail. It is unlikely that you know that most modern electrical appliances are connected using this conductor. Outwardly, it can resemble the VVGGG cable and many other products. In domestic conditions, PVS is used to repair an electrical appliance, replacing its cord with a new one( most often a conductor with the marking 3x 2.5 or 3x 1.5) is used. The photo shows how to use the wire to connect the chandelier, extending it under the plaster.
You can easily make an extension cord with your own hands, using this flexible conductor for connection. 
The main thing before you decide to buy a product, carefully calculate the conductor cross section for power and current in order to choose the most suitable diameter of the conductors. 
We do not recommend the use of a PVA wire for fixed wiring in an apartment or a house, due to its shortcomings such as:
- The product is not intended for use as wiring, which is associated with a short service life and low fireproof properties.
- The very interpretation of the marking indicates that the wire is intended only for connection.
- For about the same price, you can buy a more preferred analog.
At the same time, the rules of the Electrical Code and GOSTs do not specify a ban on the use of this option for laying buried wires, connecting sockets or even grounding. If you still decide to use just such a product, take care of the correct choice of the cross-section of veins, and also that the line does not pass on the street, because the temperature regime of use is rather limited. No one puts the PVS wire in the ground, becausewe have already stressed above that his appointment does not apply to the street laying of the line.
You should also pay your attention to the fact that the strands are multiwire, so before they are connected to electrical appliances, it is necessary to carry out tinning.
The best manufacturers
It is impossible to state with certainty that this or that manufacturer of wire ПВС is the most qualitative and optimum for the price. This is due to a variety of factors, such as the huge number of counterfeits on the market, the remoteness of the region from the city in which the plant is located, etc. 
We advise you to choose the wire section by yourself when selecting.sometimes it may differ from that cipher that is indicated on the isolation( for example, instead of 2x 2.5 it will be 2x2.35).As a result, you can become not only deceived, but also affected, if the line goes down with current overloads.
If you believe the reviews on the Internet, the most high-quality manufacturer is the Kolchugino plant.
That's all I wanted to tell you about the technical characteristics of the PVS wire. We hope that the information was useful and interesting for you!
