Bored Holes

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resistance

resistance

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WA
Where does it say bored holes can act to secure NM cable before entering an electrical box.

All I can find is this: Nonmetallic-sheathed cable shall be supported and secured by staples, cable ties, straps, hangers, or similar fittings designed and installed so as not to damage the cable, at intervals not exceeding 4? ft and within 12 in. of every outlet box, junction box, cabinet, or fitting. Flat cables shall not be stapled on edge.
 
The code does not say that the NM can be secured within 12" of a box by running the cable through a bored hole. The code does say that in between boxes that the NM can be supported by running it though bored holes.
 
You were close -- read the next section 334.30(A). But I don't think this lets you not staple or otherwise secure it just before entering the box -- still need some sort of securing within 12" of a box. Horizontal bored holes can secure and support most of the run though.
 
Here's the relevant section:


334.30(A) Horizontal Runs Through Holes and Notches. In
other than vertical runs, cables installed in accordance with
300.4 shall be considered to be supported and secured
where such support does not exceed 1.4-m (41⁄2-ft) intervals
and the nonmetallic-sheathed cable is securely fastened in
place by an approved means within 300 mm (12 in.) of
each box, cabinet, conduit body, or other nonmetallic-
sheathed cable termination.
Informational Note: See 314.17(C) for support where non-
metallic boxes are used.
Click to expand...
 
In the real world, I dont see why the bored hole or the box connector can't be good enough, I dont see what a staple or other means is going to accomplish?

And to be honest, when wiring recess lights, I sometimes omit the staple, because it serves no purpose.
 
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