1) When calculating for box fill, does a double light switch (2 switches on one unit) count as 1 device or 2?
2) Do cable stackers count for securing NM cable w/i 8″ of a plastic box?
if not, then
3) is it permissible to secure two 14-2 cables under the same staple? (side by side under a large SE staple – not stacked on top of each other)
All responses (including snide remarks) are appreciated 🙂
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Replies
One mounting strap = one device.
The "trees" are counted as support.
Two cables under one staple is generally allowed; however, you are forbidden to place the cables so that the staples press against the outside edges; they must be laid flat.
"1) When calculating for box fill, does a double light switch (2 switches on one unit) count as 1 device or 2?"
1 and the same for a double receptacle (the common duplex).
The code does not count devices at all. It counts Yokes (or straps).
"2) Do cable stackers count for securing NM cable w/i 8" of a plastic box?"
It reads "secured by staples, cable ties, straps, hangers, or similar fittings". Also a hole is a joit or stud is acceptable. So unless the approval of a stacker said otherwise it should work.
"3) is it permissible to secure two 14-2 cables under the same staple? (side by side under a large SE staple - not stacked on top of each other)"
You need to check the approval. See the box. IIRC the 5/8" legs are only approved for one. But the those with 3/4" legs are approved for 1 or 2 14-2 or 12-2.
Thanks guys!!