In order to finish wiring up my range and cook top (Splicing 6/3 wire to multiple 8/3 wires (or even other 6/3 wires) inside a junction box), I will be pulling 10/3 and 8/3 NM wire, respectively, from a junction box affixed to a basement joist, along the top basement joists, through the basement ceiling (kitchen subfloor), to two separate junction boxes mounted inside of my kitchen cabinets.
The range and cook top both have aluminum flexible conduit shielded wire coming out of them, going to the under-counter junction boxes.
Question - Does the NM wire I'm pulling up from the basement to those j-boxes require to be protected from damage (NEC 300.4 or others code sections) by similar or other type of shielding -
a) along the joist/through the subfloor plywood hole (I don't believe so, just confirming),
b) in the short space inside the kitchen cabinets before they enter the j-boxes (both cabinets have doors)?
Any applicable 2017/2020 code sections would be much appreciated with the commentary.