It is not manufactured to BS8436.Ah, OK.
I had assumed it was like Flexishield and the foil shield would take out the RCD/OCPD if penetrated by a nail, etc.
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Discuss Fire Alarm Circuit RCD Protection TT System in the Commercial Electrical Advice area at ElectriciansForums.net
It is not manufactured to BS8436.Ah, OK.
I had assumed it was like Flexishield and the foil shield would take out the RCD/OCPD if penetrated by a nail, etc.
Thanks for this info westwood10. I did not realise that FP200 is not suitable for this application. Following on from your post, I did a little research. I think it has to do with the construction of the foil shield, in that it is not capable of carrying a large fault current for long enough to operate the OCPD. Every day's a school day...It is not manufactured to BS8436.
Shouldn't fire alarms be wired from the board in fireproof cable??Putting in on its own RCBO is one option if it is wired in T&E or similar so the < 50mm rule applies, though if in FP cable it should be OK without "additional" protection due to the foil shield.
If worried about spurious trips not being noticed/fixed, how about taking it off a central lights circuit?
In any case I would still prefer a 100mA delay RCD up-front so a failed RCBO is not leaving the system with no viable means of disconnection on a L-E fault.
Depends if you're doing a Part 1 or Part 6 system.Shouldn't fire alarms be wired from the board in fireproof cable??
It will still need a supply!And to bring my side of this thread to a close.
The landlord has had another FRA done and the system has been put down as LD2 D1 so he's going for a wireless system...
Fed from a local lighting circuit which is acceptable.It will still need a supply!
Ah, OK.
I had assumed it was like Flexishield and the foil shield would take out the RCD/OCPD if penetrated by a nail, etc.
Thanks for this info westwood10. I did not realise that FP200 is not suitable for this application. Following on from your post, I did a little research. I think it has to do with the construction of the foil shield, in that it is not capable of carrying a large fault current for long enough to operate the OCPD. Every day's a school day...
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