Why r used of cable 50sq.mm and above size cable in 3.5 core. And below size in

Why r used of cable 50sq.mm and above size cable in 3.5 core. And below size in 4 core ? any technical reason please explain it

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Why r used of cable 50sq.mm and above size cable in 3.5 core. And below size in 4 core ? any technic..

Answer / rajiv gupta

3.5 CORE CABLES ARE USED FOR BALANCE LOAD. IN BALANCE LOAD
THERE IS 0 CURRENT OR VERY LESS CURRENT IN NEUTRUAL WIRE.

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Why r used of cable 50sq.mm and above size cable in 3.5 core. And below size in 4 core ? any technic..

Answer / ganesh v

3.5sqmm means the neutral conductor dia will be half of the
main conductor (mechanically weak). In 4 core cables, by
matching phase conductor dia for neutral conductor,
mechanical strength is maintained.

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