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odiji
Participant

Join Date: Aug 2011
Posts: 2

G.I. Conduit for Fire Alarm System Instead of uPVC

08/18/2011 5:53 AM

Is it a mandatory to used the G.I. Conduit on all Fire Alarm System Lay -out on that are embedded on Slab instead of uPVC Conduit? Do we have a reference on this as per National Electrical Code latest Ed.?BSN (British Standard ) latest Ed. ? NFPA latest Ed.?

Just want to be clarified..

Thank You..

-ODY JIAN -

Phnom Penh
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harry potter
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Join Date: Nov 2008
Location: India
Posts: 333
Good Answers: 6
#1

Re: G.I. conduit for fire alarm system instead of uPVC

08/18/2011 6:34 AM

GI Conduits serves the double purpose.

1. RF interference free signal cables

2. Complete fire protection in comparision with PVC - which melts >70deg. C

So, it may be made standardised. However, For concealed wiring, embeded in walls & Slabs, you may go for PVC conduits, but RF interference free feature will be lost. You may have to use braided signal cables in that case.

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odiji
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Join Date: Aug 2011
Posts: 2
#2
In reply to #1

Re: G.I. conduit for fire alarm system instead of uPVC

08/18/2011 7:29 AM

Thanks for the reply..Any basis of reference from British Standards (BSN) latest Edition, regarding the subject? or National Electrical Code (NEC) latest Edition?
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