Class A fire alarm cable fire rating

[conraj2]

Kinda of new to the industry but my question is this.

On the job I am on we have a situation were the spec requires fire rated wire for all return and circut risers for the class A fire alarm system speced for the building. The electrical contractor used none fire rated wire but is convinced that because the cable is in EMT that the EMT used gives it a 2 hour rating. In some cases the wireing is in 2hr walls. What are your thaughts, codes proveing or disproving their side?

Thanks

 

[ron]

The only time the national code requires survivability for circuits is if there is partial evacuation.
If the spec calls for it, then it doesn't matter if the code doesn't require it.
EMT does not offer a fire rating. You would have to use CI cable in EMT to get that rating.

 

[gadfly56]

The only time the national code requires survivability for circuits is if there is partial evacuation.
If the spec calls for it, then it doesn't matter if the code doesn't require it.
EMT does not offer a fire rating. You would have to use CI cable in EMT to get that rating.

Did you mean CIC?

 

[ron]

CI and CIC is the type but whether it goes into EMT depends on the tested assembly by the manufacturer.

 

[DARUSA]

Rhh

Rhh

You can use a RHH cable listed as 2 hrs fire rate!

 

[ron]

DARUSA,
I'm not sure if the RHH solution is available in fire alarm cabling sizes. They do have it for power though.