sir, i want to know the calculation for find rated current
for cable sizes.(both copper & aluminium) with examole.
please sir
for example: 35sq.mm al.cable is withstands for how many
amps?
is suitable for 45kw motor?
- 5 Answers
- 10841 Views
- L&T, I also Faced
- E-Mail Answers
Answer Posted / jack
For 35mmsq size cable ,current anything more than 150
ampers is applicable.To find current use the formula P=VI
COSfi,WHERE COSfi=0.8 ,from this find current I,to find the
cicuit breaker size use the formula c.b rating =I(1.1-
1.25) ,this will give the ciucit breaker size,
Cuurent (amp) Cable Size (mmsq)
10 1.5
25 6
50 15
100 25
150+ 35
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
difference between crane drive and line drive.
What are the types of instrument transformer?
SUTIABLE FOR ohm's law super conductor
why magnet has north and south poles only why not east and west and why we are considering as north and south poles? why cant we consider as east and west?
how to Select Lighting arrester? What r the parameters to be considered for the selection of Lighting arrester ?
diff. between tension mode & speed mode
In between UPS out going changer over switch and ups raising main input, both side cable gland producing heat but the cable doesn't get heat,Why?
CAN U PLEASE TELL ME SOME G.D TOPICS FOR APGENCO INTERVIEW&G.D
Why do we perform an open-circuit test and short-circuit test on the transformer?
if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .
what should be correct gas pressures to be a 1.5 ac unite
why are the maintaine power factor and how can this control and this is how work.
what is effect of length of air gap on performance of dc motor and generator?
Refernce currents are to be generated using refernce cueernts how can this be done??
what is allowed value of zero sequence impedancce of 6.6 kv nuetral earthing transformer ?what is the actual value
