Ampacity of a copper buss bar

[alohaelectric81]

What is the ampacity of a copper buss bar that is 1/4" by 4"

 

[bob]

What is the ampacity of a copper buss bar that is 1/4" by 4"

This might help.
http://www.lmphotonics.com/busbarcalcs.htm
http://www.copper.org/applications/busbar/ampacity/busT4.htm

 

[bkludecke]

I know this is 'shade tree' engineering but years ago I learned a 'rule of thumb' that copper buss was about 1000amps/sq in. So 1/4x4=1sq in=1000amps?

Bob on the left coast.