Hi i need to install 6 wired smoke alarms and one heat sensor in the kitchen.I intend to get an electrican but i am looking for the least disruptive way of installation to my ceilings.I have read on the web that they can be installed into the lighting circuit.Is this correct
wired smoke alarms
- Thread starter highbury44
- Start date
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You need a 230v voltage source at one point. The usual/easiest method is to take a permanent live&neutral from a nearby light point.
The disruptive bit is that, from the starting location, you'll need to run 3core&earth cable to all of the other alarm locations.
The lighting circuit(s) do not form the interlink.
To avoid running wires everywhere, you could take a power feed from a local light fitting to each smoke alarm and use wireless bases, but they are pricey.
Why do you need so many alarms by the way? Is this a house, or something else?
The disruptive bit is that, from the starting location, you'll need to run 3core&earth cable to all of the other alarm locations.
The lighting circuit(s) do not form the interlink.
To avoid running wires everywhere, you could take a power feed from a local light fitting to each smoke alarm and use wireless bases, but they are pricey.
Why do you need so many alarms by the way? Is this a house, or something else?
The reason for the alarms is to get a HMO licence.So if i use wireless ones the disruption would be minimal?
Even the wireless types, require cables!
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Check with the licencing officers if a wireless connected alarm is acceptable to them in an HMO.
The Wireless Models are a Backplate that sits behind the Alarm/Heat Detector , They require a Feed & Neutral which can be taken from a Light point nearby by fishing a Twin & Earth from the Light point to maybe a point a Metre away, subject to them having a Loop System and not just having a Switched Live & Neutral at the Light point
So if acceptable they can be fitted with a minimum of disruption , Otherwise its a Feed & Neutral from a Light point and a 3 Core & Earth linked to each Detector.
I have fitted these Wireless Systems in HMO Buildings (Student Accom) , they also required a Fire Alarm system which was also a Wireless system , This was covered by Manchester Building Control , Though other areas may have their own ideas / requirements.
Lucky
So if acceptable they can be fitted with a minimum of disruption , Otherwise its a Feed & Neutral from a Light point and a 3 Core & Earth linked to each Detector.
I have fitted these Wireless Systems in HMO Buildings (Student Accom) , they also required a Fire Alarm system which was also a Wireless system , This was covered by Manchester Building Control , Though other areas may have their own ideas / requirements.
Lucky
Your electrician will know the least disruptive way to install them. I would expect it to be possible with out any damage to your ceilings at all.
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