Answer / rajesh kumar

We can select the cable size in sqmm for certain load by
this process
Cross sectional area of conductor in sqmm
In single phase=a=2x4.59PL
Where a=crosssectional area of conductor
P=Load in KW
L=Distance of load point

In three phase=a=4.55xPL/3

Answer / swaroopreddy

skin effect by current carrying conduter mainly decides the
carrying capacity of cable,

Answer / simon

Wt=P=v*I find the amp cap of load.

Answer / pradeep bandre

AS WE KNOW CABLE CORE IS MADE UP OF ALLUMINIUM.AND IF
RESISTIVITY OF ALUMINIUM IS 'D' AND ARAEA OF CROSS-SECTION
IS 'A' THEN RESISTANCE=D(L/A) WHERE 'L' IS LENGHTH OF
CABLE.THEN BY FORMULA I=V/R YOU CAN CALCULATE THE CURRENT
CAPACITY.

Answer / sanjeet swarnakar

by kelvins law we can calcute the economical size of the
conductor

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