What is required for communication cable bundles when they pass through fire-rated walls?

When communication cable bundles pass through fire-rated walls, it is essential to utilize fire-rated pathway devices. These devices are specifically designed to maintain the fire-resistance integrity of the wall. They ensure that when cables penetrate these walls, the opening is properly sealed to prevent the passage of fire and smoke, thereby safeguarding the structure and its occupants.

Fire-rated pathway devices include features such as fire stopping materials or systems that allow for cable installations while adhering to fire safety codes. These devices help to maintain compliance with local building codes and standards, which mandate that any penetration in a fire-rated barrier must be protected in order to resist the spread of fire for a specified duration.

While other options might serve specific roles in different contexts of cable management, they do not provide the necessary fire safety compliance required in situations where cables are installed through fire-rated walls. Therefore, the use of fire-rated pathway devices is crucial for maintaining safety and integrity in any building where communication systems are installed.