[tarekibra88]

As the cable cross section(C.S) increases, the
density of current (A/mm²) decreases due to skin effect.

 

	Maximum AMPACITY	Current Density A/mm2
1 mm2	13 A	13
3* 150 mm2	350 A	2.3
3 * 300 mm2	570 A	1.9
3 * 400 mm2	680 A	1.7
3 * 630 mm2	880 A	1.4

the current passes in the outer layers  and decreases gradually to be zero in the
inner layers

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