how to calculate the size of cable for 100 kva load,?can somebody tell me with

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how to calculate the size of cable for 100 kva load,?can
somebody tell me with a formula

Question Posted / narsimha

7 Answers
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how to calculate the size of cable for 100 kva load,?can somebody tell me with a formula..

Answer / virendra

Considering Powe factor 0.8
Kw = KVA*.08
KW = 100*0.8
= 80 KW
w = 1.73 * 415 * Il * 0.8
80000 = 1.73 * 415 * I1 * 0.8
I = 80000/ 1.73*415*0.8
= 139 Amp

You can choose the cable which current carring capacity per
phase is on or above 140 Amp

By considering the future expansion of load the 180 Sq.mm
AYFY cable is ideal.

Is This Answer Correct ?

18 Yes

2 No

how to calculate the size of cable for 100 kva load,?can somebody tell me with a formula..

Answer / prashant singh

KVA=uder root3*V*A/1000
A=Under root 3*415*KVA/1000

Is This Answer Correct ?

22 Yes

7 No

how to calculate the size of cable for 100 kva load,?can somebody tell me with a formula..

Answer / abdulsubur

WE CAN GET FROM THIS REALTION
KVA=KW/KVAR
100*85=85KW
THEN FIND CURRNET FROM P=ROOT 3 VICOSPHI FORMULA THEN FIND
CURRENT AND THEN LENTH FROM THE MV=VD*1000/L*I

Is This Answer Correct ?

11 Yes

6 No

how to calculate the size of cable for 100 kva load,?can somebody tell me with a formula..

Answer / brijesh shakya

Before calculating size of cable, phase & voltage should be
clear then after we can calculate the current of load by
this formula
P=root3*V*I
I=P/(root3*V)
Accodingle we can select the size of cale.

Is This Answer Correct ?

8 Yes

3 No

how to calculate the size of cable for 100 kva load,?can somebody tell me with a formula..

Answer / jack

Depends on what voltage you working with.

P = V*I

You got P and V, find what your I is.

Then use a cable selection book from, eg. Olex, choose your
cable from there.

Is This Answer Correct ?

7 Yes

14 No

how to calculate the size of cable for 100 kva load,?can somebody tell me with a formula..

Answer / jiwanjot

i think something is wrong with question ...load can never
be in KVA it should in kw if we talk about motor.....

Is This Answer Correct ?

5 Yes

15 No

how to calculate the size of cable for 100 kva load,?can somebody tell me with a formula..

Answer / mehul g. c.

if your load is single phase then you should use 3.5c x 185
sq.mm alu. Armoured cable.

Is This Answer Correct ?

1 Yes

12 No

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