National Electrical Code Articles and Information

1. You'll find the provisions for luminaire outlet boxes, canopies, and pans in Article 410, Part III.
   
2. Yes, but only under specific conditions. The first is the wiring must be 2-wire or multiwire branch circuit wiring. If it's not, then the second condition might get you past the requirement. That condition is the luminaire is identified for through-wiring [410.21].
   
3. Provide that box with a cover [410.22].
   
4. Through raceway, type MC cable, Type AC cable, Type MI cable, nonmetallic sheathed cable, or flexible cord [410.24(A)].
   
5. Suitable openings in the back of the box to provide access to wiring in the box [410.24(B)].