Final answer:
A plenum cable is found in the plenum spaces of buildings, designed to meet strict fire safety standards. These cables are special because they reduce the spread of flames and toxic smoke and are typically used in commercial buildings requiring adherence to building codes.
Step-by-step explanation:
You would find a plenum cable in the plenum spaces of buildings, which are the open spaces above the ceiling or below the floor that are used for air circulation. These cables are designed to meet strict fire safety standards because plenum spaces are used to facilitate air flow for heating, ventilation, and air-conditioning systems, and as such, they need to be coated with materials that inhibit the spread of flames and reduce the amount of toxic smoke produced if the cable were to catch fire.
Plenum-rated cables are often used in commercial buildings where meeting building codes is a requirement. It's important for these cables to be installed properly to meet the safety standards necessary in such environments.