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Pathway Survivability Level 1, Level 0

Question asked by chiefns830 on Apr 23, 2020

I posted something similar in another forum.  But I know we have some fire guys here, so that is why I'm reposting.   

I'm not a fire guy, so that is why I'm asking.

 

Question 1: 

Assume a plenum-rated cable in conduit. 

Assume a building that is 1-hour, fully sprinkled, but not sprinkled above the drop ceiling.

If I route part of the run of the conduit above the ceiling (an area that is NOT sprinkled), did I just go from Level 1 to Level 0?  

 

Question 2: 

Assume a plenum-rated cable that is NOT in conduit. 

Assume a building that is 1-hour, fully sprinkled, but not sprinkled above the drop ceiling.

If I route part of the run of the cable above the ceiling (an area that is NOT sprinkled), did I just go from Level 1 to Level 0?  

 

WHAT SAY YE?

 

 

 

 

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