If you are worried about different voltages in the same in enclosure, raceway, etc, notice the following: 300-3 (c) Conductors of Different Systems.
(1) 600 Volts, Nominal, or Less. Conductors of circuits rated 600 volts, nominal, or less, ac circuits, and dc circuits shall be permitted to occupy the same equipment wiring enclosure, cable, or raceway. All conductors shall have an insulation rating equal to at least the maximum circuit voltage applied to any conductor within the enclosure, cable, or raceway. I would "hit up" some of the guys that know about resi installations. I want to Redsy, sparky, and sparky66wv are up on these installations. Cindy posted a message about these setups as well.
Good Luck,
Doc
