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I want formula to calculate cable size as per load given in
kw & amp.I searched many sites but didn't right answer.Plz
reply me asap.
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Answer Posted / premgin
See dear the basic soultion to cable size calculatiion in
sismple form can be done like this
Vd= ( mv* I * lenghth)*100/(400*1000)
I u can calualte from the Kw value for the particular pf
simple P/554
L required length
mV is the volatage drop/amp/km that can be obtained for the
particluar size of cable from supplier
eg. for 4cx16 its around 2.5 for most suppliers
100/400 is just amultiplication factor for converting it in
to 3 phase
Now do calulation and check if voltage drop limit is below
2.5 or 4 as per your standards
Simple.
But be cutious this is the simplest method and suitabel
method,many factors like grouping factor,derating
factor,spacing factor,type of laying,etc has to be taken
for apt analysis
Software like E Tap can also be utilised
| Is This Answer Correct ? | 59 Yes | 43 No |
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