danny7299
Well-known member
Am I right in thinking that the supply to a fire alarm pannel has to be wired in fire proof cable ?
Cheers for that.BS 5839-1:25.2 (supply as near as practicable to origin), and
26.1 ( supply cable capable of withstanding fire)
HTH
KME
The regs quoted are right - but there is also a requirement to ensure that the FCU cannot be disconnected accidentally. This can be done in two ways - either by fitting the FCU in an enclosure with a lock, or by fitting a lockable FCU such as made by MK.Cheers for that.It is just that some people ask questions like this and all the answer is yes but it would be nice if there was further info supporting their answer.
Or the third one which is an unswitched FCU so if the fuse where to be removed it would not be classed as an accident.The regs quoted are right - but there is also a requirement to ensure that the FCU cannot be disconnected accidentally. This can be done in two ways - either by fitting the FCU in an enclosure with a lock, or by fitting a lockable FCU such as made by MK.All FCU's must be double pole too.
Sorry, no.Or the third one which is an unswitched FCU so if the fuse where to be removed it would not be classed as an accident.
Hiaccordfire,Can you please elaborate on why an unswitched fcu is unacceptable please?
The fcu fuse would need a screwdriver to remove the fuse, with a screwdriver one could open up the distribution board and disconnect the supply live conductor.
Surely this is the "same" act.
I don't do much alarm stuff so I am equating these actions to those legislated elsewhere and other similar situations in other BS's.
Asking really to grow the knowledge base in here.
I agree totally with you Paul - it's a regulation for the sake of regulation in my humble book.DB areas will not always be out of bounds!I have several customers where the practice is to isolate all non required circuits at the mcb at the end of the day!
This is done by the guy locking up and no they aren't skilled persons in the idea of 7671.
However the rest of this I get, thanks for the explanation, shows I haven't read my copy of the std!
Added:>>
What about tamperproof drivers?
Perhaps tri lobed, tamperproof torx, or the castle type AKA system zero?
Such as:
http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=4447891#header
There are others.
Again not criticising just trying to get an idea of your thoughts.
Paul
HiYes - BS5839-1:2002+A2:2008, Section 2, reg 25.2, clause g.
Every isolator, switch and protective device that is capable of disconnecting the mains supply to the fire alarm system should be situated in a position inaccessible to unauthorized persons or be protected against unauthorized operation by persons without a special tool.
That's further supplemented by Note 4:
NOTE 4 A special tool may, for example, be a key actuator (sometimes called
HiYes - BS5839-1:2002+A2:2008, Section 2, reg 25.2, clause g.
Every isolator, switch and protective device that is capable of disconnecting the mains supply to the fire alarm system should be situated in a position inaccessible to unauthorized persons or be protected against unauthorized operation by persons without a special tool.
That's further supplemented by Note 4:
NOTE 4 A special tool may, for example, be a key actuator (sometimes called
In short no, compliance in this case would mean correct visual labeling and warning label to identify the circuit.so the mains intake and and fuseboard will have to be locked to achieve compliance?
In short no, compliance in this case would mean correct visual labeling and warning label to identify the circuit.so the mains intake and and fuseboard will have to be locked to achieve compliance?
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