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In my reading of 334.30, am I allowed to omit staples near a junction box if NM cable is supported by a hole in the stud within 18" (or 12")?

Here is an image; can I get away with this or do I need a staple between each of the junction box entry clamps and the stud hole?

https://i.ibb.co/YfjgT8Z/Stud-Support.jpg

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  • Do not know, but I think I have read on here cables need support(stables) within a few inches of a box. As you diagram it, the stud hole is pass the limit(I think it is less than 8 inches). Will need the code experts to be sure.
    – crip659
    Commented Aug 27, 2022 at 19:10

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It looks like you need at least one securement other than the hole through the stud: "Horizontal Runs Through Holes and Notches.: ...and the nonmetallic-sheathed cable is securely fastened in place by an approved means within 300 mm (12 in.) of each box..."

Since you can't make a sharp 90 degree bend in the NM, I'm not sure where you would put your securement for the lower right box in your diagram.

Recent Code Language, maybe 2017?:

334.30 Securing and Supporting.

Nonmetallic-sheathed cable shall be supported and secured by staples; cable ties listed and identified for securement and support; or straps, hangers, or similar fittings designed and installed so as not to damage the cable, at intervals not exceeding 1.4 m (41/2 ft) and within 300 mm (12 in.) of every cable entry into enclosures such as outlet boxes, junction boxes, cabinets, or fittings. Flat cables shall not be stapled on edge.

Sections of cable protected from physical damage by raceway shall not be required to be secured within the raceway.

(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 nonmetallic boxes are used.

(B) Unsupported Cables.

Nonmetallic-sheathed cable shall be permitted to be unsupported where the cable:

(1) Is fished between access points through concealed spaces in finished buildings or structures and supporting is impracticable.

(2) Is not more than 1.4 m (41/2 ft) from the last point of cable support to the point of connection to a luminaire or other piece of electrical equipment and the cable and point of connection are within an accessible ceiling in one-, two-, or multifamily dwellings.

(C) Wiring Device Without a Separate Outlet Box.

A wiring device identified for the use, without a separate outlet box, and incorporating an integral cable clamp shall be permitted where the cable is secured in place at intervals not exceeding 1.4 m (41/2 ft) and within 300 mm (12 in.) from the wiring device wall opening, and there shall be at least a 300 mm (12 in.) loop of unbroken cable or 150 mm (6 in.) of a cable end available on the interior side of the finished wall to permit replacement.

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    Thanks Armand, I was thinking of dropping it down below the box and then bending it up along the stud with a 3" radius before it gets stapled and then enters the bottom of the box. Seems a bit silly, but if that's what is required then that's what I'll do. Commented Aug 29, 2022 at 1:55

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