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How to calculate busbar size & what is the procedure we
make for determine that?

Answer Posted / jk

Aluminum current transfer capacity :0.8 amps/sq mm
Copper current transfer capacity :1.6 amps/sq mm

Example:640 amps

x= 640 / .8 = 800 sq mm

800/10 (Say 10 mm Width)
L=80 MM, W=10 MM

Is This Answer Correct ?    17 Yes 5 No



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