Fire Alarm

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 Question by Narayanan Ganesh posted 21 Jan 2006
 Fire Alarm
What is mean by SLC wiring and NAC wiring in Fire alarm system?
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 Answer by Joseph Golan posted 21 Jan 2006
Dear Narayanan,

SLC = Signaling Line Circuit and is used to connect typically multiple smoke detectors on a single loop.

NAC = Notification Appliance Circuit which typical controls horns or strobes.

Sincerely,
Joseph Golan, RCDD

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