You are designing a cabling system for a chemical plant. What type of device is needed to prevent the spread of fire along the cable other than the barrier penetrations?

A fire break is a device applied directly to a cable bundle or tray run within an open pathway to stop fire from traveling along the cables between two fire-rated barriers. In chemical plants and industrial environments where long cable runs exist within a single fire zone, fire breaks provide intermediate protection that firestops - which seal the actual wall or floor opening - cannot provide. This distinction is critical in BICSI TDMM and NFPA 70 Article 300.21 guidance.

Fire shield is not a defined standard term in structured cabling fire protection standards and does not describe any recognized device applied along cable runs.

A firestop is specifically designed to seal barrier penetrations such as wall or floor openings against flame, smoke, and gas passage - it does not address fire spread along cable runs between penetrations.

A firewall is a structural fire-rated partition or barrier, not a device that is applied to cable bundles or installed along cable pathways.