Douglas Krantz - Technical Writer - Describing How It Works

Does the NAC Panel Power Source have to be Dedicated?

Does the NAC Panel Power Source have to be Dedicated?


Greetings Douglas,

Does a Notification Appliance Circuit (NAC) power panel require a separate 120 Volt power supply similar to the FACP?

Thank you, BD

The National Fire Protection Association (NFPA) refers this type of power to be "Power Supply for Remotely Located Control Equipment"; the NAC Panel Power Supply is a remotely located panel for the Fire Alarm Control Panel (FACP).
  • So the FACP isn't turned off while some other equipment is worked on, the power for the FACP has to be dedicated; so the NAC Panel isn't turned off while some other equipment is worked on, the NAC Panel Power Supply also has to be dedicated.

  • So the FACP isn't accidently turned off, the circuit breaker needs to be red and mechanically prevented from being turned off; so the NAC Panel isn't accidently turned off, the circuit breaker also needs to be red and mechanically prevented from being turned off.

  • So the FACP isn't automatically turned off, there can't be a ground fault or arc fault circuit interrupter; so the NAC Panel isn't automatically turned off, there also can't be a ground fault or arc fault circuit interrupter.

The FACP and the NAC Panel are part of the Fire Detection and Alarm System; it's a Life Safety System. If any of the system is turned off, some people will not be warned that there is a fire. If that happens, the building may burn down and people can be injured, or worse.

That's why, for any remotely located control equipment in the entire building wide fire alarm system, the NFPA has the same requirements as the Fire Alarm Control Panel (FACP).

You can find these requirements in the NFPA 72 2007 Edition 4.4.1.7. With each new edition, they can change these numbers. You can look it up yourself in the NFPA 72's Index, under Power Supply, subheading Remotely Located Equipment.

I do want to know how this helps you, please let me know what happens.



Douglas Krantz

facpdoug@douglaskrantz.com
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