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.

Answer / prashant singh

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

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

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.

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.

Answer / jiwanjot

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

Answer / mehul g. c.

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

If we need4× 50mm sq cable but it's not available so we can pull 4×25mm sq 2cables

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