One method to meet survivability requirements in EVACS is to use what?

One method to meet survivability requirements in EVACS is to use what?

• A. 2-hour rated CI cable
• B. 2-hour rated enclosure
• C. Metal raceways in fully-sprinklered buildings
• D. Non-rated cable

Answer: (A)

Survivability for an EVACS means the emergency signaling path must stay functional during a fire. The cable that carries the emergency audio and control signals needs to endure heat and flames for a set period, not just rely on surrounding components. A 2-hour rated CI cable provides the actual fire-resistance rating for the signaling conductors themselves, ensuring the communication path remains intact for at least two hours. Other options—enclosures, raceways, or using non-rated cable—do not guarantee the cable inside will withstand the fire exposure, so they’re less effective at meeting the required survivability. Therefore, using a 2-hour rated CI cable directly satisfies the survivability requirement by protecting the essential EVACS signaling path.

Survivability for an EVACS means the emergency signaling path must stay functional during a fire. The cable that carries the emergency audio and control signals needs to endure heat and flames for a set period, not just rely on surrounding components. A 2-hour rated CI cable provides the actual fire-resistance rating for the signaling conductors themselves, ensuring the communication path remains intact for at least two hours. Other options—enclosures, raceways, or using non-rated cable—do not guarantee the cable inside will withstand the fire exposure, so they’re less effective at meeting the required survivability. Therefore, using a 2-hour rated CI cable directly satisfies the survivability requirement by protecting the essential EVACS signaling path.