Thank you Joe, i had surfed this NEMA section previous, no soap on the issue.

One would think that given.....
Quote
The domestic luminaire industry represent about $4.5 billion with outdoor at $1.5 billion and indoor at $3.0 billion.
....there would be some reference.

The BB's have had individuals consider buried JB's, sleeving, insulation & scavenged thermals from IC cans as field fixes.

All bandaids....

As a follow up Q here, why would fan/lights, swagged fixtures, and luminares that have thier elements distal from the JB need instruct per 90C wire???