how to calculate the cable size in sqmm if load (kw) is given?

Answer Posted / nishant

Its depends on the voltage drop by current calculated from
KW rating. In india generally 3% voltage drop is considered
pumps/motors. It is basically different for different
equipment. It also depends on the cable length. If cable
length is more then voltage will be high so size will be high.

Is This Answer Correct ?    3 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is the transformer rush current?

1584


Is there any rule to select the voltage of motor based on KW rating? What is the rating above which lt motor becomes the HT motor?.

1237


how line turns ratio changes in 3 phase with change in connection

1418


A commercial Building is designed with 14th floor levels with indoor substation of three phase transformer with rated capacity of 1000 Kva.The transformer delivered 65% of its rated capacity at 0.67 power factor lagging.Because of low power factor, the power customer was penalized and certain cost was charged accordingly based on every point percentage lower than 85%.This situation may repeatedly happen on the succeding energy bills of power customer.The power customer is desired to improve its historical power factor of 0.67 lagging and no further penalty be impose by the local power company on the next bill. Q: Identify the appropriate solution you want to offer to Client?.Justify SCIENTIFICALLY and MATHEMATICALLY the principles behind the solution.

1342


What is meant by derating factor?

674






what purose of the double circuit transmission line phase of the line phase changed for circuit-1 for Circuit-2 R-Y-B B-Y-R

1822


What is meant by coupling capacitor?

657


What are the no-load losses for the 11000/415V transformer with the following rated capacity? 1.1500 kVA 2. 2000 kVA 3. 2500 kVA 4. 3000 kVA

1166


I have a CT meter with ratio 60/5. The meter reading of previous month was 3290.49 and that of current month was 3797.26. How many chargeable units as per normal meter should be my reading.

979


What is the transfer function?

624


What is oscillator circuit?

680


There are a trformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?

681


What will be the effect if I use inverter as UPS mood?

1753


i want to know that what is the eligibility critaria for ongc exam?

2568


please send me the previous year's question papers of jindal GET exams

5518