SilentKnight EVS - Manual (Page 14)

EVS Series Emergency Voice System Installation Manual
1-8 LS10062-001-SK-E
make sure all sensors and transmitters are working properly.
SURVIVABILITY:
Per the National Fire Alarm Code, NFPA 72, all circuits necessary for the operation of
the notification appliances shall be protected until they enter the evacuation signaling
zone that they serve. Any of the following methods shall be considered acceptable as
meeting these requirements:
1) A 2-hour rated cable or cable system
2) A 2-hour rated enclosure
3) Performance alternatives approved by Authority Having Jurisdiction