Cable Jacket Materials - What's Right for You? - Multicom, Inc.

The cable jacket is the first line of moisture, mechanical, flame and chemical defense for a cable. More specifically, the jacket provides protection for the shielding and conductors within the cable. The jacket protects the cable from mechanical damage during and after installation. Cable jackets are not intended to replace internior cable reinforced armors, but they can provide a fairly high level yet limited means of protection. In addition, cable jackets also provide moisture, chemical, UV and ozone protection.

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What Cable Jacket Characteristics Do You Need?

In most exterior applications, a physically robust cable jacket is needed because the environment may be harsh &#; either above or below ground &#; most cables are designed with this in mind. As always, there are varying levels of ruggedness available in the market, and you often get what you pay for.

Common cable jacket characteristics to consider when choosing an the cable that&#;s right for you are listed below:

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Cable Jacket Characteristic Benefit of Characteristic Flexibility Ease of use and long-term flex life Chemical resistance Life expectancy during exposure to chemicals Low-temperature flexibility Suitability for arctic or winter climates High-temperature survivability Determines peak and ambient operating temperature and contributes to ampacity rating Color Identification, safety and appearance Surface texture Ease of handling and installation Elastic memory Flexibility and handling, especial in coil cords Approvals/Compliance Suitability for a given application/jurisdiction Flame resistance Safety and flame spread

Types of Cable Jackets

There are many types of cable jackets available. It&#;s important to consider the jacket type when selecting the compatibility with the application&#;s connectors and environment. For example, an extremely cold environment may require cable jackets that remain flexible at very low temperatures.

The table below contains typical characteristics of some of the most common jacket types used both indoors and outdoors for most cables:

A HDPE resin that can be used as a cable jacketing material when properly colored and stabilized. The material exhibits properties such as high hardness, toughness, tensile strength and heat resistance in combination with good flexibility, excellent environmental stress crack resistance and good processing properties. Due to the unique combination of HDPE and MDPE properties, this resin is an excellent material for power cable and telecommunications cable jackets.

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