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sir, i want to know the calculation for find rated current
for cable sizes.(both copper & aluminium) with examole.
please sir
for example: 35sq.mm al.cable is withstands for how many
amps?
is suitable for 45kw motor?
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Answer Posted / abhishek
Copper wire conducts 1A/sqmm while Al wire conducts 1.2A/sqmm....Now 1.8A current is drawn by 1KW load..So for 45KW motor 80A is drawn....So 75sqmm of Copper cable & 65sqmm of Al cable will be reuired....
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