how to determine the size of power cable according to load current



how to determine the size of power cable according to load current..

Answer / sudhakar g

First we have to calculate the load details
Ex: for 100 kw load

I=(kw*1000)/(p.f* 415v*1.732)
=173A

For cable manfacutrer they give the list of for these amp
how much cable we have to lay

If u want to calculate means u have to consider
1) derating factor
2) temprature coffiecent factor
3) kfactor

Is This Answer Correct ?    6 Yes 1 No

Post New Answer

More Electrical Engineering Interview Questions

what is the difference between R Y B windings in three phase.does it differ by construction or by number of windings?Explain the difference between them.

3 Answers  


what is meant by MCB and MCCB? and what its full form?

7 Answers   Bajaj, JHM Hotels,


electrical

0 Answers   BSES, Minda,


can anyone explain the star-delta motor control wiring ,which wire go where and how they operate?

0 Answers  


1. What kVA rating is required for a transformer that must handle a maximum load current of 8 A with a secondary voltage of 2 kV?

3 Answers   BCPL,






I am a possesor of c licence from 1993. I forgot to renew during the year 1998. During that time I was working at TNEB to till date. Is there any possibility to get renewed? or to apply for a new one?

0 Answers  


Can double compression glands be used with regular cables?

0 Answers  


Why 11KV/440V distribution supply use for Domestic use?

3 Answers   Essar, Getco, Nissan,


I am about to write exam in RRB bangalore for the post of section engineer.please provide me with previous exam questions

0 Answers   Wipro,


how to calculate the size of cable tray

3 Answers  


why current transformer secondary side should be shorted ?

5 Answers   Areva,


What will happen if DC supply is given on the primary of a transformer?

6 Answers  


Categories
  • Civil Engineering Interview Questions Civil Engineering (5084)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • Electrical Engineering Interview Questions Electrical Engineering (16631)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1094)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)