Cable stables and bundling. How do the GB staples avoid derating?

[steven765]

Looking at those GB snapshot cable stables they're listed and the instructions say they're good for up too 8 12/2's in a staple. Link below.

Bundled is defined as: Cables or conductors that are physically tied, wrapped, taped, or otherwise periodically tied together.

Which seems to be okay as there's plastic between every 2 wires if you pack it full. However, does that meet the intent of the rule especially if you encased 8 of them in spray foam?

SnapSHOT Multi-Cable Staple, Red, NM (flat and round), Coaxial and Data/CAT5, (20/pk)

The Gardner Bender MultiCable Staples organize and secure multiple cable runs on a stud.

www.gardnerbender.com

 

[LarryFine]

I think the foam does not alter whether stackers render cables bundled; I consider them spaced.

I have used them both with NM cables and LV wiring. Here are a few shots from one of my jobs:




There are also Caddy's Colorado Jim cable supports, which hold cables flat and side-by-side, if you feel that spacing is better:




I found a shot online that came from another one of my jobs:




Now, this definitely qualifies as bundling of cables:

 

[hbiss]

Looking at those GB snapshot cable stables

Those are not staples, they are called stackers.

-Hal

 

[infinity]

Those are not staples, they are called stackers.

-Hal

Stackers are a 3M product. GB calls theirs Multi-Cable Staples. Arlington calls theirs The Spacer. Like you I call all of them stackers.