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Extending Interconnected Smoke Detectors - Okay to use 12/2?

Extending Interconnected Smoke Detectors - Okay to use 12/2?

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Old 09-24-15, 12:47 PM
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Extending Interconnected Smoke Detectors - Okay to use 12/2?

I am looking to extend my existing interconnected smoke/CO detectors into the bedrooms. The one in the hall has 12/3 that runs to the downstairs. I have switched to a wireless interconnected system, and they do not use the red traveler wire. Would there be an issue with running 12/2 for the new locations? Is there any code violation? I wasn't sure if smoke detector locations had to have 12/3. I already have spare 12/2, but I can buy new romex if necessary. I appreciate any input.
 
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Old 09-24-15, 01:06 PM
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As far as I know the interconnect wire is required and wireless interconnected devices are approved for retrofit applications only, not new installations.
 
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Old 09-24-15, 01:22 PM
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I'm using the Nest smoke detectors, which are a newer product. They just released the second generation, which apparently fixed some of the issues. Are you saying that I can't use them for new locations in the bedrooms? I didn't realize that.
 
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Old 09-24-15, 01:59 PM
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You would have to verify with your local building inspector, I work in a couple jurisdictions where wireless interconnects are not allowed.
 
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Old 09-24-15, 02:10 PM
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The idea behind interconnected smoke detectors is when one goes off..... they all sound at the same time. Some of the wireless system smoke detectors have their own sounder, report when there is a fire but don't have interconnected sounders.
 
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Old 09-24-15, 02:40 PM
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That's exactly what these do. They just don't rely on the traveler wire for communication.
 
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Old 09-24-15, 05:37 PM
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Cool.... in that case it would be best to run it by the building or fire sub code official.
 
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Old 09-24-15, 06:20 PM
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If you need to run cable anyway, the wired interconnects are way cheaper.
 
 

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