A metal clad FCU won't offer fire resistance.
Red Twin & Earth
- Thread starter AndyPRK
- Start date
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Exactly.
So what's the point of wiring a panel in fire resistant cable?
That's the point I'm trying to make as the distribution board won't be fire resistant.
That's the point I'm trying to make as the distribution board won't be fire resistant.
But is it a requirement to feed the alarm panel with fire resistant cable?
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I am sure the supply is meant to be in FP or similar, not so sure on the colouring, but have often seen it done in red by firms. The supply to the firealarm should be taken from the main intake where practicable, and not a submain.
I don't have my BS here, but am really sure it has to firetuff, although perhaps there are get outs like "run in away as to minimise risk" etc.
I don't have my BS here, but am really sure it has to firetuff, although perhaps there are get outs like "run in away as to minimise risk" etc.
I sort of recall there is no reg that states the cable must be firetuff, but the there is a reg that states the mains supply should be prolonged as long as possible, or words to this effect. All new installs use firetuff for detection, sounders and the supply.
H
holmslaw
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H
holmslaw
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And what about the fire protection?
H
holmslaw
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someone earlier said only the sounders need to be in fire cable, not so, used to be detectors could be in tw/e but not for many years.
Also supply cables,26.1: "the integrity of the mains supply to the system is also regarded as essential, even though the system has a standby supply. Accordingly, mains supplycircuits need to be adequately protected against the effects of fire"
"all fire alarm cables should be of a common colour that is not used for cables of general electrical services in the building, to enable these cables to be distinguished from those of other circuits."
Note 10, the colour red is prefered.
Also supply cables,26.1: "the integrity of the mains supply to the system is also regarded as essential, even though the system has a standby supply. Accordingly, mains supplycircuits need to be adequately protected against the effects of fire"
"all fire alarm cables should be of a common colour that is not used for cables of general electrical services in the building, to enable these cables to be distinguished from those of other circuits."
Note 10, the colour red is prefered.
Could it be used for maintained circuits? That is some places (my experience is in lifesciences departments in Universities) have a range of circuits that are maintained. That is should the mains power fail then a generator will kick in and start supplying power to the maintained circuits. Not funny if the power goes out to the -80 degree fridge that has your life's work in.
These all had red face plates at the last university I worked at to distinguish them from other sockets. It is not hard to imagine that you might use red T+E to supply them as well.
These all had red face plates at the last university I worked at to distinguish them from other sockets. It is not hard to imagine that you might use red T+E to supply them as well.
Regular maintenance and testing should avoid a complete battery failure.
As for red T&E, you could use it for the link between the consumer unit and the first of the interlinked smoke/heat detectors in domestic premesis. The interlinks normally need to be done in 3C&E
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