Hey electrical froods:
I have some receptacles and a light to wire. I plan to:
Feed the switch box with 12/2 NM
Run 12/3 from the switch box to the light, with both hots connected
to the switch box feed hot, the red switched, the black unswitched.
Connect the light to the red and the neutral.
Run 12/2 to the receptacles, connected to the black and neutral of
the 12/3 in the switch box, for unswitched power.
Since all my circuit conductors are always in one cable, and there
is no way to overload any conductor of the 12/3 without overloading
the 12/2 that feeds it, and I'm not paralleling because the red and
black are connected only at one end, would this not comply with
code? I can't find anything against it, and it's neater than running
two separate 12/2 cables. It's basically what you do with a
ceiling fan, but with the circuit continuing past the end of the 12/3.