An intelligent electrician knows very well that when laying wiring there are no trifles or trifles that could be ignored. In particular, the quality indicators of the cable and wire used directly determine the reliability and safety of the entire home electrical system - buy good cable and wiring products, having correctly calculated the cross-section of current-carrying conductors, taking into account the maximum possible load (including with a prospective increase in the number of consumers in the future), and all electrics will function reliably for many years. But petty savings can sometimes have very serious negative consequences - up to the failure of all wiring due to overload or even fire.
Trouble-free wiring - cable, wire
Thus, before going to the store for the cable, you need to professionally calculate the required cross-section for the power of consumers and current loads in various sections and calculate the length. Next, you should decide on the material of the cable cores. It could be:
● copper
● aluminum
Aluminum cable is somewhat cheaper, but it must be borne in mind that aluminum has a worse current-carrying capacity, therefore, with the same cross-section with a copper analog, it will be able to pass half the current, so the calculated cable cross-section must be increased accordingly. The conductive core itself can be solid or twisted from a large bundle of thin wires. In the latter case, the cable turns out to be flexible and it is much more convenient to lay it.
According to the operating conditions, wires and cables are:
● for laying the inner
● outdoor design
● universal
In public buildings, in order to increase fire safety, it is recommended to use a cable in non-combustible insulation or, at least, not supporting the combustion process. The most popular is a universal cable (VVG brand), suitable for laying both indoor and outdoor, which can be operated at temperatures from -500C to + 500C. In intra-apartment wiring, PVA wire with copper round conductors in double PVC insulation is most often used. Each core has its own insulation, and the gap between them is carefully filled with an outer insulating layer - such a solution significantly increases the level of protection against insulation breakdown, guarantees the reliability and trouble-free functioning of the wiring.
Take a look at the ElectricaShop multibrand online store if you you need a reliable cable, wire from the most reputable world and domestic manufacturers
