2 hour rated fire alarm wiring

[mshields]

Say you have a 2 story office building and you bringing all of your SLC and IDC circuit directly back to a single FACP on the ground floor, do you need any of your cabling to be 2 hour rated?

Now - what if you put a transponder cabinet on the second floor, such that you are connecting backbone to it with all of your SLC and IDC circuits for the second floor coming off of that secondary panel if you will. Does the backbone need to be 2 hour rated?

Thanks,

Mike

 

[gadfly56]

Say you have a 2 story office building and you bringing all of your SLC and IDC circuit directly back to a single FACP on the ground floor, do you need any of your cabling to be 2 hour rated?

Now - what if you put a transponder cabinet on the second floor, such that you are connecting backbone to it with all of your SLC and IDC circuits for the second floor coming off of that secondary panel if you will. Does the backbone need to be 2 hour rated?

Thanks,

Mike

Do the project specs call for a 2-hour rating?
Are you doing defend-in-place?
Does the building have areas of refuge?
Are you doing partial evacuation?

I may have forgotten one or two, but if the answer to the above questions is "no", then you do not need a 2-hour rated installation. Heck, your cable doesn't even need to be riser rated.

 

[ron]

Pathway Survivability is covered by NFPA 72 section 24.3.6.

What Level of survivability is required for your application?

 

[mshields]

72 reference

72 reference

will look at that - thanks