Plenum rated power cables

[Umtully1]

Has anyone seen plenum rated power cables? I've got an electrical room with a 1000A feed thats right in the middle of a plenum space. My understanding of the NBCC is that all cables passing through the plenum space (which will be every cable leaving the electrical room) is required to be plenum (or FT6) rated.

Problem is, I can't find any FT6 rated 600V cables.

 

[7anoter4]

If this plenum could be defined as per NEC Art.300.22 (C) Other Spaces Used for Environmental Air (Plenums) then since the FT6 cables-usually- are control cable of small conductor cross section area and only 300 V insulation grade you have to follow this:
“Other types of cables, conductors, and raceways shall be permitted to be installed in electrical metallic tubing, flexible metallic tubing, intermediate metal conduit, rigid metal conduit without an overall nonmetallic covering, flexible metal conduit, or, where accessible, surface metal raceway or metal wireway with metal covers.”
Anyway, you may consult a manufacturer-as Belden Cable for instance:

https://www.awcwire.com/mfg/belden/product/belden-cmp-ft6-multi-plenum-shielded