Fire Alarm device box in slab

[mstrlucky74]

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.

 

[luckylerado]

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.

 

[Strathead]

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.

 

[gadfly56]

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.

 

[sameguy]

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.

 

[mstrlucky74]

I think he is talking about a slab between floors.

correct