How can you calculate busbar size?

Busbar Length x Busbar Size x 0.009

ex- Length= 12meter

Size = 60 X 10 mm

ie, 12 x 60 x 10 x 0.009

Ans = 65 kg

Can you please let us know what is "0.009" for???

Ans: 0.009 = copper density

Max. Current for 60 x 10mm = 60 x 10 x 1.55 = 930 AMP

What is "1.55" for??