I think I know the calculation for this gang box, but I want to double check. Specifically, does the light count as a "yoke"? This is a 15A circuit.
Per my other question (Calculate electrical box volume needed) I see:
- 3 14/2 coming into the box (count: 6)
- 4 grounds (count: 1)
- No clamps in the box
So that is 7 x 2in (14/2 awg) = 14.
But is the light a yoke? If so, that is +2 which means 9x2in for 18 needed.
I measured the round box and it is 4" by 2 1/4" (2 1/8" is all I could see in the nec tables) so that would allow for 21.5.
Sound about right? I am splicing in an outlet off this circuit and it would save me from putting up another gang box before the light.