How to calculate the current carrying capacity of
electrical cables
Answer Posted / t.raju goud
Actually current carrying capacity of the cable we can from
the manufacturer, But for the referance purpose I can give
some idea about current capacity of the cable.
So generally we are using two types of cable i.e,. copper &
Aluminium.
copper is the best conductor than the aluminium
At 1Sqmm copper conductor will Approx 2 amp in ground
At 1Sqmm copper conductor will Approx 2.4 amp in air
At 1Sqmm Aluminium conductor will Approx 1.2 amp in ground
At 1Sqmm Aluminium conductor will Approx 1.6 amp in air.
For example:
p=50kw
load current=87amps
So
for aluminum cable size(air)= load current/1.6
=87/1.2
=72.5
But In the market there is no availability for 72.5 Sqmm so
we can propose 70Sqmm or 95Sqmm.
This is the one of the best procedure for for cable
selection with using catelogues
Is This Answer Correct ? | 81 Yes | 36 No |
Post New Answer View All Answers
what is the effect of back reactive power on the generator ?
how to revers the direction of single phase motor
Why front mounted CT polarities are always towards breaker?
We have 90mX100m hangar with 16 no.of supporting pillar. It is required to provide power supply on all pillars. what is suggested earthing scheme for hangars.
Draw a circuit diagram in which if button is open we can use socket and bulb as a series test circit and if button is close than simple we can use socket as any load purpose.
Mention the methods for starting an induction motor?
how will we calculate the copper wire load..
how oil in the MOCB was reduced compared with OCB? what are the features of the MOCB?
Why can't we parallel the secondary circuits of two voltage transformers?
How to checked frequency drive output voltages?
What is ideal IR values for ground and neutral.
What is meant by time harmonics and space harmonics?
What is the meaning of Insulation H for transformers????
What’s electric traction?
there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit