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Question
`how to calculate cable size by amp`
Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By

# 1
Based on the Total load & Votage drop
 Is This Answer Correct ? 130 Yes 20 No
Kuttivenu

# 2
for
a. cu cable: 1 sqmm=5amp
b. al cable: 1sqmm=1.5amp

 Is This Answer Correct ? 109 Yes 38 No
Er. Ankush Miglani 9718151073

# 3
how we calculate for 25 amps Al cable given example

from ur point of view 16 sq.mm Al cable is enough for the
25 Amps

 Is This Answer Correct ? 62 Yes 22 No

# 4
Fist Calculate the Full load current..then assume some
derating factor...nd evaluate that current..then check that
current with ny reputed cable makers manual(Havells,Pollycab)
to get the actual cable size

 Is This Answer Correct ? 46 Yes 13 No
Soumendasbiswas

# 5
It depends on the total load and voltage
 Is This Answer Correct ? 29 Yes 5 No
Pavan

# 6
Cable calculation is based on the following factors:
1.Total current based on the peak load(total connected .
2.Cable length
3.Type of cable using(get from manual of cable manufactures)
4.Ambient temperature(normally 28 degrees)

 Is This Answer Correct ? 26 Yes 5 No
Robins

# 7
cable size is calculated depending up on load ..for example
9amp is the current for amp current the selection cable size
can be opted on the basis of manufature detial like
havells,polly cab..have the range of cable for certain
amount of current we have to selected the cable size on the
basis of manufacture range sheet

 Is This Answer Correct ? 26 Yes 10 No
Azhar

# 8
Another factor in dxeciding on a cable size is where it
will be laid i.e in air, in soil, in ducts, on cable
containment ect

 Is This Answer Correct ? 15 Yes 3 No
Patson

# 9
Basically cable size is calculated depend Load & lenth. But
so many Place & area are also depend by temprature & low
Voltage for example Server Room

 Is This Answer Correct ? 9 Yes 0 No
Kartick Bango

# 10
Total current based on the peak load(total connected .
 Is This Answer Correct ? 12 Yes 4 No
Bharat

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