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Service entrance cable to be fire protected?

H

Heaven

Silver Member
Joined
Nov 13, 2009
Messages
130
Sorry, can't find this with a search of the board ~ the question was posed, is a service entrance cable (this is a sub panel cable) which is run above ceiling required to be protected by 15 min rated ceiling assembly? THanks in advance.
 
Re: Service entrance cable to be fire protected?

No, SER cable installed in a dwelling unit occupancy is not required to be concealed within a wall or ceiling that provides a 15 min thermal barrier.

SER cable installed as interior wiring must meet the requirements of Part II of Article 334 (NM cable).

Chris
 
Re: Service entrance cable to be fire protected?

Sorry, I posted under teh wrong section, this is in a commercial building, and from your wording it sounds like it must be protected, are you able to give me a section NEC2008 where I can read about that? thanks if so,
 
Re: Service entrance cable to be fire protected?

Heaven,

With regard to your requested 2008 NEC article, look at Article 334.12(A)(2) for NM conductors.

This question is coming up more and more!

 
Re: Service entrance cable to be fire protected?

north star said:
Heaven,

With regard to your requested 2008 NEC article, look at Article 334.12(A)(2) for NM conductors.

This question is coming up more and more!

Click to expand...
thanks you, I was looking unhder service equipment conductors : )
 
Re: Service entrance cable to be fire protected?

Heaven said:
Sorry, I posted under teh wrong section, this is in a commercial building, and from your wording it sounds like it must be protected, are you able to give me a section NEC2008 where I can read about that? thanks if so,
Click to expand...
For commercial installations SER cable run as interior wiring in accordance with 338.10(B)(4)(a) must be concealed within walls, floors and ceilings that provide a thermal barrier of at least 15 minutes. (See 334.10(3).)

Also as pointed out 334.12(A)(2) prohibits the SER cable from being exposed in droppe3d or suspended ceilings in other than dwellings.

Chris
 
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