Interconnecting smoke detectors

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juz73

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Where are smoke detector interconnecting requirements found? I couldn't find it in the N.E.C. 2008.
Would first floor devices have to connected to 2nd and 3rd floor?? :confused:
 
juz73 said:
Where are smoke detector interconnecting requirements found? I couldn't find it in the N.E.C. 2008.
Would first floor devices have to connected to 2nd and 3rd floor?? :confused:
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You will not find it in the NEC it is in the building code. Yes, all devices must be interconnected within a unit. If this is a multifamily unit then I don't believe they can be interconnected.
 
I understand they need to be connected but... to what end... Say you have a monster of house.... 6-8 bedrooms.... and 3 levels or floors, obviously you may quite a number of devices... must all of the detectors being sounding if one detects smoke???
 
juz73 said:
I understand they need to be connected but... to what end... Say you have a monster of house.... 6-8 bedrooms.... and 3 levels or floors, obviously you may quite a number of devices... must all of the detectors being sounding if one detects smoke???
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I believe that is the point. If they were not interconnected someone on the first floor might not hear a detector going off on the third floor.
 
Dennis Alwon said:
You will not find it in the NEC it is in the building code. Yes, all devices must be interconnected within a unit. If this is a multifamily unit then I don't believe they can be interconnected.[/quote]

Right. 210.25 prohibits wiring from one dwelling unit extending into another dwelling unit. :smile:
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Right. 210.25 prohibits wiring from one dwelling unit extending into another dwelling unit. :smile:[/quote]


Fred
Excluding jurisdictions outside of NYS, would the requirement you are discussing be found in the Fire/building codes of NYS ??? :wink:
 
wbalsam1 said:
Right. 210.25 prohibits wiring from one dwelling unit extending into another dwelling unit. :smile:
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Pierre C Belarge said:
Fred
Excluding jurisdictions outside of NYS, would the requirement you are discussing be found in the Fire/building codes of NYS ??? :wink:
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R313.1 in the RCNYS establishes the rules for interconnection of SD's in individual units and 313.4 for interconnecting carbon monoxide detectors.:smile:
 
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juz73 said:
I understand they need to be connected but... to what end... Say you have a monster of house.... 6-8 bedrooms.... and 3 levels or floors, obviously you may quite a number of devices... must all of the detectors being sounding if one detects smoke???
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YES, without a doubt.

All the smoke alarms in one dwelling unit, no matter how large or how many smoke alarms must be interconnected.

Watch out when you buy the smoke alarms that they are listed for interconnecting the number you are using.
 
iwire said:
YES, without a doubt.

All the smoke alarms in one dwelling unit, no matter how large or how many smoke alarms must be interconnected.

Watch out when you buy the smoke alarms that they are listed for interconnecting the number you are using.
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Im not sure how many smokes you can link together, but I guesss if you exceed the limit, you could add a second circuit and control it with a relay, anyone see a problem with that?
 
There was a piece on the news lately about young children not hearing smoke alarms. There is a company making an alarm that uses the parents' recorded voice telling the child to get up and get out. Apparently young children respond more to their parents' voice than to an alarm.
 
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