Answer / bala_vlsi

Cu
u can consider 1.4 A / sqmm
Al
u can consider 0.8 A / Sq mm
eXAMPLE
50 X 6 CU busbar
50x 6 = 300 x 1.4 = 420 A
It is suitable for 420 A capacity


50 X 6 Al busbar
50x 6 = 300 x 0.8 = 240 A
It is suitable for 240 A capacity

Answer / vishnu.a

load is the major thing to determine busbar..
aluminium bus bar
Amps=1.2x area.............. if busbar size is 50x6 means
we can allow 360 amps
copper bus bar
approximately amps=area

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