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Joined: Aug 2001
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We have always advocated wiring the smokes to a local lighting circuit. The thinking is that if the breaker trips, you'll know it. You may not know it if a dedicated smoke circuit trips. Example being ... residents are on vacation and a surge or short outage causes the breaker to trip. After a week or so the batteries are dead and the residents return unaware of the lack of protection. The question: (I have no access to NFPA 72) is this code or just something we have always done?
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Joined: Apr 2002
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A quick discussion with my Fire Official results in:
Yes, the smokes on a circuit with a light (luminaire) WAS the chosen way, back 20-25 years.
NOW, a dedicated circuit is required. It's in "72", but neither one of us has the time to hunt it down.
BTW, Bob has 40+ years in Fire.
John
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Joined: Aug 2001
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Joined: Apr 2002
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Steve
Documentation I have access to (Thanks Bob) is as follows:
NJ IRC 2015......R314.6 .....Wiring shall be permanent, and without a disconnecting switch other than those required for overcurrent protection.
2013 National Fire Alarm & Signaling Handbook Chapter 29
Basically says a good practice is to use a branch circuit that supply a lighting circuit.....Further into that text it alludes that some states & locals may require a dedicated circuit, consult AHJ. (Not complete text, as I am not a typist.)
Seems like a round about way of saying 'either or'; however here it is a dedicated circuit.
John
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Joined: Jul 2004
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Put it on the circuit with the Wi Fi router. They will track down the fault right away. 
Greg Fretwell
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Posts: 1,803
Joined: March 2005
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