Answer Posted / tariqusman

if u want to find the cable size for a specific load. so u
find the load current. and just divid by 4, similsrly u
find the accurate size of cable for specific load. for
example. a load of 50kw, ist u find the load current, and
then divide by 4.
P = 50kw or 50,000watt
V = 440 volt
I = ?
p = 1.7320*440*I*0.8
I = p/1.7320*440*.8
I = 50,000/598.4
I = 83 Ampere

now u divid the load current by 4

83/4 = 20 sq.mm

its simple if u find the cbale size...

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