Which type of CATV cable may be utilized in a riser installation?

In a riser installation, it's essential to use cables specifically rated for vertical spaces to ensure safety and compliance with building codes. The option that includes CATV-P or CARV-R is correct because these cables are designed with properties suitable for riser applications. They are typically constructed to resist flame spread, making them safe for use where they may run vertically through multiple floors.

The CATV-P cables are usually designed for residential and commercial installations, offering good performance for community antenna television (CATV) systems. CARV-R may offer similar benefits, with additional ratings for fire safety, ensuring adherence to local regulations. This characteristic is crucial in riser installations, where cables are often exposed to conditions that could increase the risk of fire.

In contrast, other types of CATV cables may not possess the necessary fire-resistance ratings or construction standards required for vertical installations. Using cables that do not meet these specifications can pose safety hazards and lead to non-compliance with electrical codes in riser applications. Therefore, proper selection of CATV-P or CARV-R cables is vital for both performance and safety in such settings.