Interduct - same as Smurftube?

[LarryFine]

The title says it all. What is the difference between Interduct and the orange flexible non-metallic tubing?

 

[Dennis Alwon]

I found this
http://forums.mikeholt.com/showthread.php?t=64172
and this
Smurf Tube is the nickname for ENT (Electrical Nonmetalic Tubing) used in electrical applications, the industry standard color is blue for electrical. Per Carlon's web site: http://www.carlon.com/Flexible Raceway/FlexPlus_ENTApprovedUses.html 362.2 Definition. Electrical Nonmetallic Tubing (ENT). A nonmetallic pliable corrugated raceway of circular cross section with integral or associated couplings, connectors, and fittings for the installation of electric conductors... II. APPROVED USES ENT can be used in place of EMT, Rigid Galvanized Steel, AC or MC/ cable and NM cable. (Section 362.10 of NEC) ENT can be used in residential, commercial, schools, condominiums, apartments and industrial applications. A typical Carlon product code is 12005AK-001 for 1/2 inch. The "Protective Conduit...normally orange." Describes Innerduct (not interduct), a seperate product. "Carflex" (not Carlflex) is yet another product, it is non-metallic liquidtight conduit.

 

[LawnGuyLandSparky]

Innerduct is more like a heavy-walled pex used for both direct burial or drawn into buried teleducts and communications ductbanks. They usually contain a 1/4" nylon drag or mule tape. Used primarily for installind fiber-optic cable outside plant.

 

[LarryFine]

We're looking at a run through the drywalled ceiling space in a mall, for the future installation of a 25-pair phone cable. We're told by the mall engineer that plenum rating is a must.

We need about 120' of EMT at one end, about 50' at the other end, and something flexible for the 350' in the ceiling. I received a price of $160/100' for the Carlon PlenumGard:

http://www.carlon.com/Flexible%20Raceway/PlenumGard_Intro.html

Oh, we also need to fire-stop the penetrations, both concrete and drywall, which I will apply to the EMT, so the flex will be only in the hopefully-continuous ceiling space between.

Anyone know of options I should consider?

 

[infinity]

Innerduct is more like a heavy-walled pex used for both direct burial or drawn into buried teleducts and communications ductbanks. They usually contain a 1/4" nylon drag or mule tape. Used primarily for installind fiber-optic cable outside plant.

There are two types of innerduct. The smooth type which is used as you've described for direct burial or underground duct banks and the corrugated type that is typically pulled into conduit or run in free air above hung ceilings, etc. The smooth stuff is very stiff when compared to the corrugated version.