Answer Posted / p. h. godavary

Cable size (area of each core) is normally specified in square millimeters
(sq. mm). In this case it is 35 sq. mm. The cable size is always printed / marked on the cable itself by the manufacturer.

The conductor in each core of power cables is normally made of multi strand circular wires (Copper / Aluminum ).

To measure the size/area of the conductor, measure the diameter of a strand in a core and calculate its area. Multiply this area by number of strands in a core.

If the diameter of a strand in mm is D,
then its Area = [∏/4] [ DxD ] = [3.14/4 ] [DxD] Sq. mm.

Size of the cable (or) Cross sectional Area of a Core
= [Area of a strand x No. of strands in the core].

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