WHAT IS THE THUMB RULE FOR DECIDING THE CURRENT RATING OF
COPPER WIRES SAY 2.5/4/6/10 MM SQUARE SIZES??

Answer Posted / sonu

current carrying capacity of wire's of
2.5 sq.mm=29amp
4.0 sq.mm=37amp
6.0 sq.mm=48amp
10.0 sq.mm=66amp

Is This Answer Correct ?    28 Yes 38 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Explain the working of any one cutting machine

672


how to calculate

1179


what are the different methods for the starting of a synchronous motor.

650


What happen Grid EARTH plat got cut.

1748


In case of salient pole alternator when number of poles are 4 or more than 4 it helps the flux wave to be sinusoid as air gap length is increased from center to tip , but if the number of poles are 2 how does the flux wave is sinusoidal?

1531






Testing procedure of DG alternator stability test

949


What is MSL designation of a motor and same may be provided in details.

1231


What are motor generator sets and explain the different ways the motor generator set can be used ?

719


which type of stability limit is higher,steady state or transient? why?

1461


What are the advantages of autotransformer?

765


What is Electrical Grade Aluminum for Tubular BusBars. i am confused between 6063 and T6 or T5 and what is BS 2898 and BS 159?

1428


What is the difference between type1 and type2 relay protection co-ordination for motor feeders

1751


how can maintaince the acb contactor moveing and fixing kit

1597


I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

1459


Does all the output contacts (N/O as well as N/C) of a Numerical relay operate when relay receives a binary input/inputs or contacts are designated to specific logic input/inputs and only these contacts operate?

1619