500 MCM 2

[rugger80]

I'm a mechanical designer but we have a project where some of the power transformers are under my contract. My specs. use the terms #6/0 and #4/0 which I'm familiar with but also refer to " 500 MCM" connectors which I am not familiar with. Can I get the short version of what type or size this refers to and a source?

 

[mcgyvr]

500 MCM (now referred to as kcmil instead of MCM) is a wire size meaning 500,000 circular mils.
Typically in the US it goes

smaller sizes 1 to 32 or whatever AWG
then
1/0 AWG
2/0 AWG
3/0 AWG
4/0 AWG
250 kcmil (or MCM)
300 kcmil
350 kcmil
400 kcmil
500 kcmil
600 kcmil
750 kcmil
1000 kcmil

 

[DRWeig]

And your source will be any electrical supply house....

Good on ya,

Goober Dave

 

[rugger80]

Thanks,new term for me.

 

[CupOJoe]

Just to note, that the area is the area of copper conduction, not the total area of the conductor.