Aluminium & copper busbar size

You can Google your question. Here is one site for copper busbar.

http://www.copperinfo.co.uk/busbars/pub22-copper-for-busbars/homepage.shtml

Apart from cable sizing, this topic is one of CR4's most popular. Try reading-up here.

Current carrying capacity of any conductor (Al or Cu) depends on area of cross section.

Normal practice for calculating current carrying capacity is find the area of cross section, multiply with density of the material. Ex. Al density =1A, for copper = 1.6A etc.

25mm X 4mm thick Al can carry 100A

25mm X 3mm thick Cu can carry 100A current.

Copper Flat = 1.06A/sqmm, Copper Tube = 2.0A/sqmm

Al Flat = 1A/sqmm and Al tube = 1.25A/sqmm

my friend can you tell us how can we compare the benefits of Cu & Al bus bars ?

costing is one aspect but how do we cost it ?

Dear Sir,

Can any body tell the fault calculation for 40 X10 mm Aluminum Bus Bar.