How in modern times can you distinguish a high-quality cable or wire from a low-quality one? It is enough to know several ways to identify a marriage.
The year of production can also indicate a low-quality cable. If the cable is more than several years old, or even three, four years, then you have a cable lying around for one reason or another in the warehouse. Such a cable may be of poor quality, which makes it poorly sold. Also, such a cable can be of good quality, but significantly deteriorated, due to improper storage in a warehouse as an obsolete product. Better to buy "fresh" cables. This advice also applies to electrical product choices.
-quality cable products are distinguished by their mechanical strength, as well as proper properties. Try to bend the cable, bend it. For example, a quality copper cable must withstand up to 40 bends and not break.
When buying electrical products, it is more difficult to check their technical properties, unlike cable products, here you can only rely on: product certificate, name of a quality manufacturer of electrical products, appearance of electrical products.
-Purchase electrical products only in specialized stores that have the appropriate licenses.
-the price of electrical products does not indicate its quality.
-check the certificate of electrical products, make sure the proper marking on the product, compliance with GOST-am.
-Pay attention to the absence of external manufacturing defects, thoughtful design and the absence of visible low-quality parts, materials, fasteners.
High-quality electrical products must be certified and tested in the laboratory:
- the absence of flammable materials.
- to possess the property of heat resistance corresponding to GOST for a specific electrical product.
-to restrict the penetration of flammable materials and substances from outside.
-the ability to work in emergency modes (network overload, short circuit, weak contacts).
-the absence of the release of toxic substances harmful to living beings.
- for the presence of technical means of electrical products, automatically turn off in emergency mode.
- the absence of conditions during operation in the design of electrical products and its elements that can cause the release of incandescent or burning particles.
