strut-type channel raceways

[finhead]

Good Morning
Can someone tell me why 384.22 specifies using the outside diameter of a conductor to determine strut fill? Also, T384.22 is titled "Channel Size and Inside Diameter Area."
As I read the code, inside diameter has nothing to do with calculating conductor fill.
Thank you
Brian Dolan

 

[petersonra]

Re: strut-type channel raceways

Maybe it is a mistake and is referring to the cross sectional area of the inside of the strut and not the ID?

My guess would be someone copied this from a section having to do with conduit and forgot to change the terminology.

[ August 18, 2005, 11:51 AM: Message edited by: petersonra ]

 

[infinity]

Re: strut-type channel raceways

Aren't all wire fill tables based on the outside diameter dimensions of the conductors? Why should this be any different for strut type channel raceways?

 

[celtic]

Re: strut-type channel raceways

Originally posted by finhead:

As I read the code, inside diameter has nothing to do with calculating conductor fill.

OD of wire/cable and ID of raceway.