Which type of cable is suitable for installation in air handling areas?

Plenum rated cable is specifically designed for use in air handling spaces, such as ceilings and raised floors, where air circulation is common for heating, ventilation, and air conditioning (HVAC) systems. The key characteristic that makes this type of cable suitable for these environments is its construction, which includes a fire-resistant jacket that produces low levels of smoke and toxic fumes when exposed to fire. This is crucial in plenum spaces because these areas can facilitate the rapid spread of smoke and flames, posing significant safety risks.

In contrast, armored cables are typically utilized for physical protection in environments where they may be exposed to mechanical stress or damage, but they are not inherently suitable for plenum spaces because their fire safety characteristics may not meet plenum requirements. Distribution cables are commonly used in various networking applications; however, they do not necessarily have the specialized construction needed for plenum areas. Patch cords are generally used for shorter connections and are usually not designed to be installed within air handling spaces, lacking the necessary fire resistance features. Thus, while all options have their specific uses, it is the plenum rated cable that is uniquely qualified for installation in air handling areas due to its compliance with safety standards for fire and smoke.