We've been debating the "legality" of pancake boxes on several jobs, so I thought I'd throw it out here...
3 1/4 x 1/2 Raco pancake is 3.9 cu in; 4 x 1/2 Raco is 6 cu in. There are also several "blocks" that fit over vinyl with varying cu in capacity.
Fill factor - #14 - 2 cu in per conductor plus 2 cu in for all grounds = 6 cu in (no clamps - black button for connector).
So, 3 1/4 can't be used anywhere, but 4" is ok for typical outside light next to door.
Right or wrong? How do you guys do it? Rough in - a wire poked out next to the door, and then comes finish......
Thanks for input / discussion.
