Calculation of cable cross-section online

To correctly select the marking of the wire or power cable, the first thing to do is to calculate its cross section. The easiest way is to use a special program for this, in which you need to enter the initial data: the number of phases, power consumption, rated voltage and, no less important, the material of current-carrying conductors. So that our readers can quickly perform calculations, we have provided an online calculator for calculating the cable cross-section by power and line length. Everything is very simple - enter the information that you know and click the "Calculate" button. The calculator online will display the calculated and recommended value, and you just have to choose the appropriate marking of the wire or power cable.

Enter power: kW
Select rated voltage:
Indicate the number of phases:
Select core material:
Enter the cable line length: m
Indicate the type of line:
Core cross section mm2 :
Recommended cross section mm2 :

The advantages of this online calculator are that with it you can calculate the minimum cross section of a wire or cable in a network with a nominal voltage of 220 V to 10 kV. In addition, for more accurate settlement work, you can specify the type of posting - open or hidden, which will also affect the calculation. If you doubt the output, we strongly recommend calculation of cable cross-section by power and current using the formulas that we provided in the corresponding article. In addition, you can verify the result with the values ​​indicated in the table:

Moreover, we also recommend that you familiarize yourself with programs for calculating cable cross-sectionthat can be installed on a computer and phone. If you are not too lazy to calculate the cross section of the veins in several ways, the result will be the most accurate value that you need! Nevertheless, experience has shown that the calculator online is able to make calculations with minimal error!

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6 comments

  • Gotcha

    Thank you sooooooooooooooooooooooooooooooooooooooo

    To answer
  • Eugene

    Curve Calculator! When selecting the cable section for power to a load of 50 kW, 380v offers a section of 3mm.kv, and in the table below it is already 16 mm.kv. Who to believe?

    To answer
    • Admin

      Sometimes there are failures in his work. In this case, it is better to use special programs to calculate the cable cross section or the same formula and table.

      To answer
    • Sergei

      Eugene, the estimated S = 13.1 mm2, and the recommended 16 mm2.

      To answer
  • Basil

    The calculation produces the wrong!
    At a power of 151 kW, it produces a cross section of 1.187 mm2! According to the tables - 120 mm2

    To answer
    • Sergei

      For a cable in the ground, copper produces 151 kW of calculated S = 39.562 mm2, and the recommended 50 mm2. Everything exactly matches the third table

      To answer

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