how to choose the cable rating for load (KW)? EXAMPLE.50KW load
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Answer / er.p.somasundaram
1 H.P = 1.25 Amps
IN CASE ALUMINIUM CONDUCTOR USE CONSTANT VALUE IS =0.75
IN CASE COPPER CONDUCTOR USE CONSTANT VALUE IS =1.25
SO CONDUCTOR SIZE= 1.25*1.25(CU)=1.25SQMM
Is This Answer Correct ? | 26 Yes | 35 No |
Answer / er.p.somasundaram
10 H.P = 10.25 Amps
IN CASE ALUMINIUM CONDUCTOR USE CONSTANT VALUE IS =0.75
IN CASE COPPER CONDUCTOR USE CONSTANT VALUE IS =1.25
SO CONDUCTOR SIZE+cable sqmm *075 =10.25amps, now a days increase current so cable size is small size increases.
10.25*0.75=10 sq mm
Is This Answer Correct ? | 15 Yes | 33 No |
Cable carring capasity is there.. we can get form cable
manufacturer...
for 50kW load,
current(I) = 50/(1.732*415*.8(p.f))
I = 28.75A
For 1.5Sqmm cable curent carring capasity = 20A in ground
2.5 = 27,
4 = 34,
6 = 43,
10 = 57,
16 = 73A like that.
now our load current is 28.75A
No.of cable with size =28.75/43A (6Sqmm)
= .6686/.7 (Diff factor)
=.955
there fore 1run 6 Sqmm aluminium cable we selected for 50
kW load.
Is This Answer Correct ? | 31 Yes | 153 No |
Answer / suresh kumar
Copper Cable: Sqmm*1.5, Exam: If we have 50 Sqmm copper
cabe, The it will take load is 50*1.5=75Amp
Al Cable is multiplying factor of 1.
Exam: 50 Sqmm cable will take 50A load.
Is This Answer Correct ? | 98 Yes | 233 No |
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