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#169373 - 10/03/07 09:21 AM Fire Pumps  
Last Leg  Offline
Member
Joined: May 2005
Posts: 41
Houston, Texas
EMT conduits were previously ran through a Parking Garage. We are bidding on a project at the receiving end. 150HP Pump, 1200 Amp Service Fused Disconnect, RHW wire. REF: 695.6(B)3 - does this apply? This was suggested in the meeting with the GC. I usually avoid a Service disconnect and/or have routed 'outside the building', so haven't used this method. How or where do I confirm (Iknow - AHJ, getting my ducks..)that this is a "listed" electrical circuit protective system, with a minimum 1 hour rating? I've read EMT is not rated, as it is not combustible and read the RHW rating, but can't put my finger on the exactness. Any help?


2017 / 2014 NEC & Related Books and Study Guides

#169377 - 10/03/07 10:16 AM Re: Fire Pumps [Re: Last Leg]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,135
Estero,Fl,usa
I had a fire pump with conductors run about 30' into the building. We got by this by putting the raceway down in the corner between floor and wall, building a 2x8 form and pouring it solid with concrete.


Greg Fretwell

#169380 - 10/03/07 10:55 AM Re: Fire Pumps [Re: gfretwell]  
Alan Nadon  Offline
Member
Joined: Mar 2005
Posts: 399
Elkhart, IN. USA
Check out www.drakausa.com/lifeline Their RHH wire is listed for two hours in EMT.


Alan--
If it was easy, anyone could do it.

#169385 - 10/03/07 01:59 PM Re: Fire Pumps [Re: Alan Nadon]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,874
Brick, NJ USA
Just a thought...
The RHH was $$$$$$ on a job that the EC thought would solve the dilemma.
They wound up saw cutting the floor, and going under the slab


John

#169451 - 10/05/07 12:01 PM Re: Fire Pumps [Re: HotLine1]  
mikesh  Offline
Member
Joined: Jun 2006
Posts: 613
Victoria, BC, Canada
I think that a fire pump must be fed with 2 hour rated conductors. In EMT there is a special conductor that can give a 2 hr rating otherwise I think you need several inches of concrete encasement or other 2 hour fire rated enclosure.


#169452 - 10/05/07 12:06 PM Re: Fire Pumps [Re: mikesh]  
allphase  Offline
Member
Joined: Sep 2007
Posts: 14
Chicago il.
RRH is a lot of $$$$ but it will pass the 2 hour rate in emt.

Have fun pulling it its thick . We over size the emt.

Larry

Last edited by allphase; 10/05/07 12:07 PM.

#169466 - 10/05/07 04:55 PM Re: Fire Pumps [Re: allphase]  
Last Leg  Offline
Member
Joined: May 2005
Posts: 41
Houston, Texas
Thanks for the input... just turned in the bid. Wish I had checked 'have fun pulling it.. it's thick' first. Pipe is oversized a bit though - 3- 250's and grnd in a 3". I did up the labor a bit, not knowing.
Thanks all.



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