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#32679 12/31/03 10:52 AM
Joined: Jul 2001
Posts: 311
F
Member
Happy new year to all!
When using conduit as "protection from physical damage" for nonmetallic-sheathed cable as permitted in section 334.15(B) what is the maximum length of conduit that can be used as a sleeve.
Since the Code is not specific I suppose it might vary according to AHJ.

Frank

#32680 12/31/03 11:31 AM
Joined: Mar 2001
Posts: 2,056
R
Member
Hello Frank. Happy New Year to you.
This has been discussed in one way or another(see 250.86, exception 2) in several different forums.
There seems to be no consensus as to what constitutes a "short section".

BTW,
I say anything less than a full length.

#32681 12/31/03 12:21 PM
Joined: Feb 2002
Posts: 375
G
Member
You can use as much as you want to.

For less than 2' you can ignore the fill and derating requirements.

#32682 12/31/03 01:04 PM
Joined: Oct 2000
Posts: 4,035
Likes: 1
Member
Frank,

Happy New Year!

I've been told any length was OK as long as one end was open. On a closed conduit system I don't know.

Bill


Bill
#32683 12/31/03 06:42 PM
Joined: Apr 2002
Posts: 914
E
Member
As long as the conduit is sized properly for the size and number of conductors inside the NM, there isn't a restriction on NM in conduit. Most NM is THHN/THWN-2.

#32684 01/07/04 12:48 PM
Joined: Jan 2004
Posts: 91
R
Member
how are you using the sleeve? for what pupose, does the sleeve terminate into a box etc????


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