Answer / bala.a

Hai
its is very simple
load=10 HP
10 X 0.746= 7.46 KW

7.46 X 1000/ ROOT 3 X 0.8X 415= 12.97 A= 13 A

So our require cable shouls be withstand 13 A AT full load
condition .

u will reff any one cable manufacture catalouge which
cable suitable for the same load . but that cable to be
suitable for Appx -18A because u will consider the
derating factor for cable .

Answer / santosh

Sqmm of cable depends upon the cable material.In thumb rule Cu cable can carry 10-12 times of its rated sqmm.For ex 10 sqmm cu cable carry 100-120 amps.Al cable carry 4 times current of its rated sqmm

For ur problem: 13A is rated current. 50-60 amp staring current,7-8 running cu.So u may need 4 sqmm Al cable or 2.5 sqmm cu cable.

Answer / anil

Sir, it is simple 10kw motor will take 14 amp current in
normal running of motor but at starting shall take about 5-7
times more in case of induction motor. so we will consider
the cable accordingly

Answer / charan

fine buddy, what i want is how the manufactures is deciding
that Sqmm of the cable ??

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