Answer / ranga2k8

In order to increase the ruggedness & thereby mechanical
strength of cable, it will be made in spiral in shape.One
more reason is we can bend the core whenever a sharp curve
is needed in the erection of cable.

Answer / gurucharan singh

this is to increase the strength of cable core. As cable
core is amde of multiple small size wires called strandes.

Answer / j_diyym

I imagine its the case with all cables; is purely for
mechanical and practical consideration. nothing electrical.

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