How to choose the right copper cable?

The choice of electrical cable should rest entirely on the shoulders of a professional. Only a specialist can say exactly what type of cable is needed, based on calculations. To electrify a residential building, for example, it is necessary to count all electrical appliances and their power consumption. Special tables help in choosing the required cable parameters.

Which cable is better?

An unconditional rule for choosing a quality product is a reliable manufacturer. The second most important factor is the cable material. The unconditional cheapness of aluminum should not be confusing. Because aluminum is susceptible to oxidation, it is brittle and produces significantly lower levels of conductivity compared to its copper counterpart. Copper NYY-J cable, although more expensive, is superior to aluminum because devoid of such shortcomings.

The third nuance is the choice of cross-sectional area. In turn, the required cross-sectional area is also determined by a number of indicators:

1. Operating current
2. Heating the cable at the power limit leads to losses of transmitted current up to a third of the total value.
3. Excessive cable length reduces voltage to critical levels.
4. Taking into account the maximum current losses is possible with proper wiring and all electrical branches.
5. The load moment can be found using a table or calculated as the product of cable length (m) and power (kW).

An error in even one calculation can lead to dire consequences. Therefore, it is worth turning to a professional, because electricity does not forgive mistakes.

The NYY-group cable has a number of advantages compared to other one-kilowatt cables. The main advantage is the possibility of laying underground. And the secondary advantages are: ease of installation, the cores are not soldered to each other and the elimination of damage.

The technical specifications are also very promising. The temperature range for maximum cable performance is 50 degrees on both sides of the zero scale of the thermometer. And the warranty and total service life (5 and 30 years, respectively) allow you to be confident in the reliability of the entire electrical wiring system.