Why size of HT cable is less then LT cable inspite of the fact that voltage is

Why size of HT cable is less then LT cable inspite of the
fact that voltage is higher in HT cable?

Question Posted / aayush

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Why size of HT cable is less then LT cable inspite of the fact that voltage is higher in HT cable?..

size that is the cross sectional area of cable that is in
Sq mm. mainly depends on current carrying capacity of cable
and second on voltage if voltage increases than the
current decreases. so in HT that high tension above 1.1 Kv
current carring capacity decrease for transferring the same
amont of power. so is the size reduced . yes it has extra
insulation for this high voltage.

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37 Yes

2 No

Why size of HT cable is less then LT cable inspite of the fact that voltage is higher in HT cable?..

Answer / rainy

Hirer the voltage the lower the current. And the lower the
voltage the lower the current. Say for instance if you were
feeding the high side of a transformer with 230kv and the
sec. side was 100kv usually the size of conductors would be
(high side 1 mill. and on the low side would be 2 mill.
wire size usually dual conductors to carry the load on the
low side.

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