Cable- Fire Rated

[mstrlucky74]

Not 100% clear on this. Drawing note say to provide 1 hour fire rated cable for EM feeders. Right below that they differentiate the feeders by color on the riser. Would the optional EM feeders(purple) fall into the one hour rating? Not sure if that note calling for one hour rating would be for both EM and optional EM feeders. Thanks.

I also attached spec section just as added reference but really doesn't lend anything to my question above.

On a side not if I need 1 hour rating in none sprinkler protected areas what are the simplest way to achieve that? Seems I would have to use 2 hour fire rated RHH.

 

[texie]

Not 100% clear on this. Drawing note say to provide 1 hour fire rated cable for EM feeders. Right below that they differentiate the feeders by color on the riser. Would the optional EM feeders(purple) fall into the one hour rating? Not sure if that note calling for one hour rating would be for both EM and optional EM feeders. Thanks.

I also attached spec section just as added reference but really doesn't lend anything to my question above.

On a side not if I need 1 hour rating in none sprinkler protected areas what are the simplest way to achieve that? Seems I would have to use 2 hour fire rated RHH.

"Optional EM" is sort of an oxymoron. It's either an optional system or an EM system as each has vastly different code requirements. I would get confirmation if the designer wants the "Optional EM" feeders fire rated.
For the feeders that are determined to need 1 or 2 hour ratings you need to adhere to UL product category FHIT. This can be cable or pipe and wire depending on the system you choose, but be advised that the requirements are for the complete system that you employ. That means each system has to be installed per the standard right down to the straps. It gets expensive from both a labor and material standpoint.
Edit to add: The good news is that today there are a lot of products available in this category to achieve these requirements compared to the past. One of the better known companies for this is VITALink.

 

[publicgood]

Agree textie - need confirmation EOR. Likely optional is NEC 702. Easiest is Vitalink MC. Concern otherwise is getting rating for both horizontal and vertical runs. Note rating is required even above ceilings or below floor where not rated. Is 1 hr or 2 by code? Depends on building type and application.

 

[mstrlucky74]

Ok, thanks. But in whatever scenario a one hour rating is required the spec says in non sprinkler areas. What if you have one conduit run that requires one hour rating but only pert of it runs through a sprinkler protected area? I would imagine the entire feeder would have to be one hour rated.

So how can you achieve a one hour rating with conduit and wire? I know Vitalink is an option. Thanks.

 

[publicgood]

Ok, thanks. But in whatever scenario a one hour rating is required the spec says in non sprinkler areas. What if you have one conduit run that requires one hour rating but only pert of it runs through a sprinkler protected area? I would imagine the entire feeder would have to be one hour rated.

So how can you achieve a one hour rating with conduit and wire? I know Vitalink is an option. Thanks.

Concrete encase this portion

 

[nec_addicted]

Fire 1 Hour Compliance

Fire 1 Hour Compliance

To protect any isolated fire protection loads running through any diverse area (multiple occupancy buildings under same ownership) it would suffice to say investigating NFPA 72, 2010 Chapter 12 'Pathways' should be included when determination required as to the safety and fire protection offered as (1) hour. An example would be where fire alarm beacons may require energized circuits in accordance with safety plan filed with the State all occupant's in a particular area will receive an evacuation notification during adverse conditions of emergency evacuation requirements.This scenario is often used for industrial plants during blow down and or shutdown and start_ups as the present danger in operation mode.