So suppose you drill a 7/8" hole through a 2x, and bang in a 1-1/2" length of the plastic channel pictured below. [The diagonal is 0.9", so I think it should friction fit.] And then you pass one NM cable through each of the 4 openings created, and then foam the whole thing. Have you successfully sidestepped the 334.80 requirement? Either by (a) creating 4 holes instead of 1, or (b) "maintaining spacing"?
Not important with #14 or #12 NM with just 8 CCCs, but would matter with more than 9 CCCs. Which might require a larger overall hole and divider.
Cheers, Wayne
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