I have a 4" x 1-1/2" octagon box with 1/2" and 3/4" knockouts mounted to a 2x4" rafter in my shed located in Indiana.
I'm putting a NEMA 5-20 outlet in the box and I'll have a switch-controlled 12/2 NM-B going into the box to supply power and another leaving the box to supply power to the next box.
I need to run another 12/2 NM-b past the box to provide power to another box in another location. Unfortunately, as you can see by the picture, the 4" octagon completely covers the 2x4 so there's no room to slide the cable past on the outside of the box.
The options I've come up with:
Run the "passing through" cable through the box behind the outlet. Do I have enough room to do this without over filling the box and is there enough room in the 3/8" grommets to allow this? This seems to be the easiest, at least until it's time to stuff everything into the box...
Repeat the above, but rotate the box so I've got the 3/4" knockouts in the direction of cable travel. Again, not difficult until it's time to put the outlet in the box & put a lid on it.
Drill a hole through the rafter on either side of the box and run the "passing through" cable to the other side of the rafter, then back to "this" side. Note that "either side of the box" could be near the top & bottom of the rafter so the cable makes almost the entirety of its run on the other side of the rafter. Not terribly difficult, but doesn't seem as "neat and tidy" or "professional looking".
Run the cable along the bottom of the rafter as it bypasses the box. The shed will remain unfinished as long as I own it, so there won't be any concern about this interfering with interior covering, however, this wiring is above a loft storage area, so it would be more susceptible to bumps and bangs from boxes and other things being put into and taken out of the loft. Quite easy, but just seems... wrong.
Which of these is code acceptable? As a "bonus", opinion-based question, how would our resident pros do this or want to see it done?