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Are there any code issues with running CAT6 and Coax thru flexible duct that is not part of a ventilation system?

Basically I want to use something like this as conduit into an unfinished attic instead of PVC: http://www.homedepot.com/p/Speedi-Products-3-in-x-96-in-Round-Aluminum-Flex-Pipe-EX-AF-396/202907340

The attic is dusty and full of insulation. So I want something flexible that can curve back up to keep the dust and insulation from falling into the living space/closet

  • I agree with the exception of a plenum. If the wires are in a air handling space they need to be plenum rated other than that in an attic/ wall standard wire is ok. – Ed Beal Jul 6 '16 at 1:25
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    Is there a reason you can't run a conduit instead? – ThreePhaseEel Jul 6 '16 at 2:20
  • @bib - not really true. sdmmag.com/articles/… – Ecnerwal Jul 6 '16 at 15:09
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May I introduce you to smurf tube? It's actually designed for the job, and meets your flexibility requirement.

Image from Home Depot, does not constitute an endorsement of home depot as a source

(Technically ENT (Electrical Nonmetallic Tubing), and it comes in non-smurfy orange as well as smurf blue.)

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