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Thread: Fire Alarm device box in slab

  1. #1
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    Fire Alarm device box in slab

    Anyone have a pic of a smoke detector box or similar fire alarm device box mounted in slab? Thinking of running some conduit in slab for fire alarm wiring. Hotel job with no hung ceilings.....I think. Need to check RCP's.

  2. #2
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    Make sure you use cable rated for wet locations. I have made the mistake of running FA under slab before. It can become a ground fault nightmare in short order.

    1N73LL1G3NC3 15 7H3 4BILI7Y 70 4D4P7 70 CH4NG3.

  3. #3
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    Quote Originally Posted by luckylerado View Post
    Make sure you use cable rated for wet locations. I have made the mistake of running FA under slab before. It can become a ground fault nightmare in short order.
    I think he is talking about a slab between floors.


    I know what I don't know, and I know where to go to find it!

  4. #4
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    Quote Originally Posted by Strathead View Post
    I think he is talking about a slab between floors.
    Unless the hotel is doubling as a data center with under-floor detection, I tend to agree.

  5. #5
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    Quote Originally Posted by mstrlucky74 View Post
    Anyone have a pic of a smoke detector box or similar fire alarm device box mounted in slab? Thinking of running some conduit in slab for fire alarm wiring. Hotel job with no hung ceilings.....I think. Need to check RCP's.
    Concrete box but get the one that fits your device.

  6. #6
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    Quote Originally Posted by Strathead View Post
    I think he is talking about a slab between floors.
    correct

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