There are specific cable ratings for specific situations. CMR for risers or going between drops vertically. Rated for a slower burn. CMP for plenum as the other poster mentioned is for use in ducts. It’s rated to give off less toxic gases during a fire which is important since the ducts distribute air throughout your house.
Comment on I made a robot to inspect my HVAC ducts
KairuByte@lemmy.dbzer0.com 9 months ago
Just FYI, it’s usually fine to run cable through ducting. It’s usually only against code to run it when you have the walls open. Meaning a remodeling crew wouldn’t be able to get away with it, but a homeowner is usually in the green.
Fenrisulfir@lemmy.ca 9 months ago
kizzard@lemmy.world 9 months ago
that’s great information - thanks!
BlackOak@mander.xyz 9 months ago
If you’re going to run it through duct work, ensure the cable is plenum rated. For Ethernet cable, the jacket will be stamped “CMP”.