300.15(F) NEC2005 Handbook comentary

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plate

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In the Handbook commentary it indicates NM sheath can be removed. Doesn?t that violate 354.120? What am I missing here?

Code: ?(F) Fitting A fitting identified for the use shall be permitted in lieu of a box or conduit body where conductors are not spliced or terminated within the fitting. The fitting shall be accessible after installation.?

Handbook commentary (not code)
"Where a cable system makes a transition to a raceway to provide mechanical protection against damage, 300.15(F) permits the use of a fitting instead of a box. For example, where nonmetallic-sheathed cable that runs overhead on floor joists and drops down on a masonry wall to supply a receptacle needs to be protected from physical damage, a short length of raceway is installed to the outlet device box. The cable sheath is removed for the length of the raceway. The cable is then inserted in the raceway and secured by a combination fitting that is fastened to the end of the raceway.?

354.120 Marking
Enclosed conductors or cables shall be marked in accordance with 310.11.

310.11 Marking
(A) Required Information All conductors and cables shall be marked to indicate the following information, using the applicable method described in 310.11(B):
(1) The maximum rated voltage
(2) The proper type letter or letters for the type of wire or cable as specified elsewhere in this Code
(3) The manufacturer's name, trademark, or other distinctive marking by which the organization responsible for the product can be readily identified
(4) The AWG size or circular mil area
 
310.11(B) doesn't tell us where the marking has to be nor how often the marking has to occur on the conductor. I'd say the marking for the NM conductors inside the "short" raceway is on the sheath of the NM.

A key point is that the fitting must be accessible. . .I can see the sheath entering the fitting.

The other key point is that the fitting cannot have splices in it, so I know that the conductor inside the raceway is the same as the conductor inside the NM.

Now, if I were to strip out a piece of NM and use the blackor white conductor to run from one splice or junction through a raceway to another splice or junction. . .then there would be no associated marking, IMO.
 
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Part of 310.11(B)
The AWG size or circular mil area shall be repeated at intervals not exceeding 610 mm (24 in.). All other markings shall be repeated at intervals not exceeding 1.0 m (40 in.).
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Don't strip the jacket, problem solved.
 
The idea of the marking of MC, and its marking on a 310.11(B)(2) marker tape. . .located within the cable, causes me to realize that the purpose is not to make the "marking" something that can be readily read.

The marking just has to be there for the type of cable or raceway.

When a "combination fitting" is used to end the sheath of NM or MC, without splice, permitting the cable conductors to continue in a raceway, the conductors are still cable conductors and have been marked, under the cable sheath, by the marker tape.

If the sheath is ended, then I cannot mark under (or on, in the case of NM) the sheath. End of sheath, end of required marking.

If I run the cable conductors into a long panelboard and loop around to the other side, say, using six feet of conductor, there is no provision to "mark" those conductors.

Why then, would I mark the same cable conductors exposed after the combination fitting in the "short length of raceway . . . installed to the outlet device box."

And, consider AC. Once the reel, coil or carton is broken, the tag is "lost". There is no marking whatever that is required for installed AC.
 
I can get behind that Al.

Now I have an answer when people tell me I can't run cables in raceways due to the marking requirements.:cool:
 
iwire said:
I can get behind that Al.

Now I have an answer when people tell me I can't run cables in raceways due to the marking requirements.:cool:
Click to expand...
"You see, Mr. Inspector, I have this friend named Al, and he says . . . "
 
LarryFine said:
"You see, Mr. Inspector, I have this friend named Al, and he says . . . "
Click to expand...

LOL

But I swear Mr inspector Al is a sharp guy. :D


Kidding aside I think Al's read on this is correct. :cool:
 
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