Technical Data and Cause of Hazard of the Lead Wire

Basic parameters of

So, first of all, let's talk about the technical characteristics of this conductor. Among the most important parameters for household use are:

• material veins - copper.respectively, the conductor is soft, not rigid;
• core insulation / outer sheath - polyvinyl chloride( PVC) / PVC;
• color of insulation in accordance with the approved standards of GOST color marking of wires;
• rated voltage - in the network up to 250 Volts;
• rated frequency - up to 50 Hz;
• operating temperature - from -15 ° С to + 50 ° С;
• permissible heating of wire conductors - up to 70 ° С;
• cross-section of conductors - from 1.0 to 4.0 mm2;
• number of live conductors - 2 or 3;
• service life - up to 3 years;

As for the specific weight per 1 meter of the length of the cable, we recommend that you familiarize yourself with this technical specification in the table:

Here we have provided a description of the most important parameters of this conductor. Now let's talk about a more important issue - why the PNPP was banned and where it can be used for domestic purposes.

Area of ​​application

Dangerous according to the opinions of specialists and consumers, the electrical conductor of the PNPP grade can be used for the following purposes:

1. for connection of outlets in the power line of domestic electrical wiring( size 3x2.5);
2. for connection of stationary lighting in houses and apartments( 3х1,5);

Simply put, this brand of conductor can be used for complete installation of electrical wiring in the house, both openly and internally. As for street use, here it is better not to use it, becauseaccording to the technical specifications, the flexible conductor can operate at a frost of at least -15 ° C.However, to date, the use of PPP is highly discouraged in electrical work, even if they are temporary. Specialists in the field of cable products recommend using a more reliable analogue - the VVG cable, which at a price is slightly higher.

Here we are told where the wire of the brand PNPP is used and how to replace it is recommended by experienced electricians. The last thing you need to tell, and, perhaps, the most important - why can not use this guide for domestic purposes, not to mention industrial!

What is the danger of use?

The thing is that the wire of the PPPP has a very poor quality and as a result - more than once caused a fire and electric shock. Both experienced professionals and ordinary buyers have been repeatedly demonstrated that the quality of insulation and wire veins leaves much to be desired. Yes, what can I say, if the production of PPP meets the requirements of TU 16.K13-020-93, according to which the cross-section of cores can be with a deviation of up to 30% of that indicated on the marking( !).

With regard to the diameter of live conductors, it is in most cases almost one quarter less than the one declared by the manufacturer. As a result - instead of the required wire 3 * 2.5 output 3 * 1.75 mm2.Do you understand the danger? The fact that a thinner guide can not withstand the current loads that are imposed on him. The consequence of an underestimated cross-section can be not only a short circuit, but also a fire in the house, becausePVC insulation is combustible, unlike the cable VVGng.

The next danger concerns the high probability of electric shock. The fact is that the thickness of the wire insulation of the PPP according to the genre classics does not correspond to the declared by the manufacturer. Instead of 0,4-0,5 mm thickness of the PVC shell required by the standard GOST 23286-78, the fact sheet does not exceed 0.3 mm. In a dangerous situation, the electrical safety of this conductor leaves much to be desired.

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