Cable section by current, wire section by current, cable selection by current, wire selection by current, cable selection by power.
Table for selecting the cross section of a copper wire depending on the current strength
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The cross section of the cores of cables and wires is selected taking into account the maximum allowable cable load. And it’s not a constant. It may depend on the number of cores in the cable, the method and place of cable laying, as well as the type of its insulation.