Filed under: Cable Pulling, Raceway, Duct and Conduit
It’s pretty well known among cable installers that when you’re pulling cables through long runs of conduit, friction is your biggest enemy. When cables are dragged through conduit, they not only rub together and against the conduit, they can also get caught in spots where the conduit bends. To keep things running as smoothly as possible – and to protect cables against the damaging effects of friction – cables are often sheathed in an innerduct material, like corrugated tubing. Corrugated tubing works great protection-wise, but since it’s rigid and essentially makes cables take up several times as much space as they would on their own, it can really waste conduit space. Wasted conduit space just means you need to use more conduit to get the job done, and more conduit translates into (you guessed it) more money.
So that begs the question: how do protect your cables from friction while saving valuable inner-conduit real estate? Easy. Give up rigid innerducts, and go with a soft and compact option like MaxCell Fabric Innerduct instead. These woven polyester sleeves surround cables to help them glide through twists and turns in conduit, but also conform much more closely to the cable’s shape and size, so you can fit many more cables into one conduit that you would ordinarily be able to with rigid innerduct.
MaxCell Fabric Innerduct is a soft, semi-sheer material, but it still has the ability to protect cables from moisture, petroleum products, chemicals, and UV light, and can be used in both manual/mechanical and air-blown cable pulling applications. It’s available in several versions to fit almost any environment: Standard protects against chemicals in conventional installations, Plenum and Riser Innerducts are low-smoke zero-halogen for safe use in indoor air handling spaces, and the Detectable version contains an 18 gauge copper core tracer that helps the conduit and cables be located easily in underground/buried installations.