I am in need of a shallow electrical box. Googling led me to this one, which is 8 cubic inches. Assuming I am using 14 gauge wire, under what scenarios is this even useful, given box fill requirements?
Assuming that I understand box fill calculations correctly, 8 cubic inches would allow for a maximum of 4 conductors with 14 gauge wire (and only 3 for 12 gauge).
If the shallow box had an outlet or a switch, that counts as 2 conductors. The hot and neutral wires would bring the total to 4. Then the ground would bring it to 5 - too much for the box.
If this box were to have two different 14/2 cables enter it, it would again be too small (2 hots plus 2 neutrals plus ground = 5).
The product overview on that page indicates "use with non-metallic sheathed cable" - I am curious to know if that's even possible!
(by the way, I see that there are larger shallow boxes that I can select from. I just want to understand why this particular one is being sold)