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Old 02-01-2008, 02:11 PM   #1
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Interconnected Smokes


When the snow stops I want to get 3 interconnected smoke alarms. But ahead of time I want to get started with the wiring. I figure each with a wall mount 10" or so below the ceiling.(and 3ft. away from ceiling fans) For wiring I plan to start w/ a separate 15a circuit then 14/2 in and 14/3 out from the first alarm, then 14/3 between the rest. If this is correct then I want to know what the basic wiring configuration is???? Thanks in advance.

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Old 02-01-2008, 02:24 PM   #2
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Interconnected Smokes


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If this is correct then I want to know what the basic wiring configuration is

Correct.

Generally we use black and white for power and the red for the interconnect lead which will be clearly labeled on the smokies.

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Old 02-01-2008, 03:06 PM   #3
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Interconnected Smokes


It would be better to mount the smokes on the ceiling than on the walls.

Smoke will rise to the ceiling and will need to build down until it reaches the detectors if mounted on the wall. Ceiling mounts will give a faster alert to smoke than wall mounts giving you increased time to get out safely.
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Old 02-01-2008, 04:08 PM   #4
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Interconnected Smokes


I see no need for a separate circuit though. Is there a reason for this?
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Answers based on the 2008 & 2011 NEC. If you're on the '14 already I feel sorry for you.
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Old 02-01-2008, 05:33 PM   #5
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I see no need for a separate circuit though. Is there a reason for this?
Well, The first smoke is in the basement and all the j-boxes are loaded. It would actually be easier to just start from the panel 'cause there's lots of new breakers and room.

While we're on that subject is the radon system supposed to be on a separate 15a circuit??

Back to the smokes--So wiring wise 1 to 1 black, wht, and red all the way through?????
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Old 02-01-2008, 06:38 PM   #6
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Interconnected Smokes


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While we're on that subject is the radon system supposed to be on a separate 15a circuit??
The NEC does not care. The manufacturer or building dept may have something to say though.

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Back to the smokes--So wiring wise 1 to 1 black, wht, and red all the way through?????
Yes, keep it color coded all the way through and you'll be fine. As 220 said, black and white are the feed an use the red as the interconnect wire.
As for the ground, just twist, wire nut, and stick them in the back of the box.
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Old 02-01-2008, 07:32 PM   #7
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Interconnected Smokes


Thanks everyone for all the info!

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