Specifications and cause dangerous wires SPAP

Basic parameters

So, first of all let's talk about what specifications in this guide.Among the most important parameters for domestic use should be made:

• living material - copper.respectively wire soft, not hard;
• core insulation / outer shell - polyvinyl chloride plastic (PVC) / PVC;
• color insulation in accordance with the approved standards GOST color-coded wires;
• rated voltage - in the network of up to 250 volts;
• rated frequency - 50 Hz;
• operating temperature - from -15 ° C to + 50 ° C;
• lived permissible heating wires - up to 70 ° C;
• cross-section of conductors - from 1.0 to 4.0 mm2;
• number of the conductors - 2 or 3;
• service life - up to s0 years;

With regard to the proportion of 1 meter length wire SPAP, with this technical feature, we encourage you to read the table:

Here we are given a description of the most important parameters of the conductor.Now on to the more important question - why banned SPAP and where it can be used for domestic purposes.

Scope

dangerous according to specialists and consumers of electric wire brand SPAP can be used for the following purposes:

1. for connecting outlets to power the house wiring line (size 3h2,5);
2. to connect stationary lighting in homes and apartments (3x1.5);

Simply put, this brand of wire can be used to complete the installation of wiring in the house, both open and internal way.As for outdoor use, it is better not to use becauseaccording to the specifications of the flexible conductor can operate in freezing temperatures not lower than -15 ° C.However, to date the use of SPAP is not recommended when the electrical work, even if they are temporary.Experts in the field of cable production is recommended to use a more reliable analog - VVG cable, which is priced slightly higher.

Here we are told where applicable SPAP brand wire and replace it with what is recommended by experienced electricians.The last thing left for you to tell, and perhaps most important - why not use this guide for domestic purposes, not to mention the industry!

What is the danger of using?

thing is that SPAP wire has a very poor quality and as a result - more than once became the cause of fire and electric shock.As experienced professionals, and ordinary consumers have been repeatedly demonstrated that the quality of the insulation and wire strands poor.What else can I say, if SPAP production complies with TU 16.K13-020-93, according to which the cross section can be a deviation of up to 30% from that indicated on the label (!).

With regard to the current-carrying conductor diameter, it is really in most cases almost a quarter less than the stated manufacturer.As a result - instead of your desired wire 3 * 3 * 2.5 yield 1.75 mm2.You see the danger?The fact that the thinner wire can not withstand the current loads, which are assigned to it.The consequence of low cross-section can be not only a short circuit, but also a fire in the building, becausePVC insulation is combustible, unlike VVGng cable.

Next danger for the high risk of electrical shock.The fact that the thickness of the wire insulation SPAP on the classics of the genre does not correspond to the declared by the manufacturer.Instead of the required standard GOST 23286-78 0.4-0.5 mm thickness PVC shell out upon not more than 0.3 mm.The dangerous situation of electrical conductor is poor.

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