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Can someone tell me how to calculate the size of a power
cable? What are the factors involved in cable sizing?
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Answer Posted / anand
Size of LT able depend upon
1. Load that cable is to carry. Generally, design load for
cable selection is appx 1.4-1.5 times theoretical load
2.Voltage drop while carrying current. Higher the size of
cable, lesser is voltage drop.
Size of HT cable is decided on the basis of load as well as
fault current it is supposed to carry during fault. Cable
hould be able to carry fault current till the tripping
circuits trips
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