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July 03, 2018
Vis Divide and Microducts: A Comparison

Posted by: Erin Schwasnick

Each cable installation project is different and will have varying requirements, so it’s important to have options for each scenario. Vis™ Divide and microducts are both options for network expansion and have a unified goal: maximizing the available cable space. But there are a few major differences between the two — differences that matter when determining the better option for a specific project.

Sizing restrictions

The size of the cables is certainly a factor to consider during project planning. As their name suggests, microducts accommodate only small cables with a fixed inside diameter (ID) of .5 inch or less.

Vis Divide can accommodate a variety of cable sizes up to 1.22 inches.  Each Vis Divide conduit can accommodate multiple cables with a combined cable outside diameter (OD) of up to 70 percent of the conduit’s ID (see graphic below). The fabric divider will move to accommodate cables of varying sizes. Vis Divide comes in 1 ½-inch and 2-inch options.

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Installation techniques

How each product is installed is another consideration. Microducts are typically installed in larger protective ducts that are flexible and durable — capable of withstanding internal air pressures. Microducts can be deployed directly within an already-occupied duct to either expand the network or replace old cables.

Vis Divide, on the other hand, is installed like a standard HDPE conduit and is compatible with plowed, direct bury, open trench and horizontal directional drilling (HDD) installation techniques. Vis Divide can be installed in a variety of applications, including new construction and network expansions.

Cable installation requirements

In addition to the actual product installation, how cables are installed into the product is also important. Cables are blown into microducts, and they typically require the use of proprietary equipment and/or contractor certification before they can be installed, due to some tricky coefficient of friction (CoF) requirements.

For Vis Divide, cables are placed into the dedicated pathways using pulling methods. Vis Divide comes with 1250-pound, pre-lubricated, color-coded Vis™ pull tapes with Mprint™ technology already installed in each cell for added installation ease.

Knowing what cable management options are available before a project begins will help avoid frustration during installation and make sure deadlines are met. If you’re working on a campus project, be sure to read about the factors necessary for futurization.

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Category: Cable management

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