Any connection both inside electrical devices and between them is carried out using mounting cables. Depending on the purpose, they all have certain design differences: the number of cores, the presence or absence of a screen, type of insulation, temperature range, working voltage, section, etc. D. Therefore, in order to choose the right cable, you need to familiarize yourself with the characteristics of various types and areas of their application. For example, for transmitting signals in the radio and electrical equipment, computers and other equipment, the radio frequency cable is used, and for household and computer equipment, asymmetric shielded conductor is more suitable.
The use of various types of cables each variety of cables has its own purpose. Since the nomenclature of these products is very extensive, we limit ourselves to only some examples. For installation in ordinary residential buildings, general -purpose power cables, VVG and VVGGS cables for stationary installations, NYM, etc. One of the most common can be called the VVG cable. Its popularity is largely explained by a wide range of characteristics and the presence of a large number of different modifications. VVG Cable can function in a wide temperature regime, steadfastly transfers the effects of aggressive media and various chemicals, moisture moisture and talked to the gap. The selection choice depends on where it is planned to use it. So, for example, in domestic conditions, a cross section is quite like from 1, 5 to 6 square meters. mm, and during the construction of a private house in order to organize electrical wiring, a section of up to 16 square meters is permissible. mm.
PVS cables are suitable for household appliances and equipment, an electric tool, and is also widely used as extension cords. And with the help of NYM cables, you can install electrical wiring not only indoors, but also outside.
The so -called LAN cables are used as computer cables. Due to their unusual design, which provides for the interweaving of one or more pairs of conductors, they are called «twisted pair». Such cables are divided into 2 types: shielded and unexplored. The insulating layer can be made of polyvinyl chloride, polyethylene or polypropylene.
The main advantage of shielded couples is the possibility of interference with interference and electromagnetic interference. Depending on the categories of the LAN cables, their frequency range is also different.
Deciding on the choice of cable, the question of cross section always arises. As you know, the mounting cable can be aluminum and copper. In favor of copper, its large electrical conductivity, resistance to oxidation and durability speaks of its great. If you approach this of the practicality of practicality, it is obvious that, despite the high price, the copper cable will be much longer than aluminum. Therefore, ultimately, its high cost is quite justified. In order not to make a mistake with the cross section, you should first find out which current load prevails on a particular network, and then compare them with the loads of various types of cables. In any case, if there is no special knowledge in this area, it is better to seek help from a specialist, since the wrong choice and subsequent installation of the inappropriate cable is fought with rather serious consequences.
