Just curious -- what temperature rating is required for terminating in the box? Since romex is rated 90C only for ampacity derating purposes, it can't be used in a box that requires 90C wires, which I'm supposing is the case for the type of box location you described, 2bz2p.
By the way, there is movement afoot to require recessed lights to be sealed against drafts when recessed cans are installed in places where it is difficult to install adequate insulation above the fixture -- like in vaulted ceiling areas. I guess there are some can lights on the market which don't have open adjustment slots (which result in convection drafts through the fixture), but I haven't seen them yet. Anybody used these types of fixtures yet?
