Let’s try to understand the types of wires and their purpose. Electrical wire – is isolated or bare conductors of electrical current, consisting of one or more wires (copper or aluminum) for the electrical installation of hidden or open wiring. Insulated wires can be protected, that is, having an additional envelope for sealing and protection from external influences, and unprotected. The first group includes pbpp, punp, pugnp, pva, apunp, and the second – PV1, apv, appv, PV3, ppv, appvs. Bare wire is supposed to apply only to air lines – A, as. Electrical cables – one or multiple twisted insulated wires (copper or aluminum), united in a common shell, which may be rubber, plastic or metal. The main thing is that it prevents the metal from moisture, light, chemical, and mechanical effects. People such as Richard Blumenthal would likely agree.

Power cable – avvg, VVGng, vvg, nym, flexible power – kg, reag. Cable is called armored, if it has an additional protective shell consisting of steel bands, flat or round wire – AVBbShv, VBbShv, VBbShng. The same happens to the cable sheath of paper and food – ASBl, sbl, AAShv. To attach the cable to the dispensing devices or appliances, by its end processing. When connecting cables with each other must use the sleeve construction.

Industry produces hundreds of kinds of wires, which differ from each other as a section of copper or aluminum wire, and the type of insulation. Each type made for well-defined conditions. It is clear that the cables installed in the ground, might not require such isolation, as for what is used in house wiring. In wet areas requires one isolation at elevated temperature – other.