hi there ive been reading with interest, pages 65&66 of the OSG explains wiring of fire detectors and alarms its states that where all circuits are protected by RCDs there is a advantage in supplying fire detectors from regulary used lighting circuits.It also states there should be a means of isolating the supplyto the alarms without affecting the lighting. how can this be achieved?
 
Hi Holte end74

On some units the base of the detector is akin to a socket outlet for all intents and purpose. The detector head plugs in and you twist it, similar to a starter for a fluorescent light fitting. Thats your simple isolation, to isolate base open circuit mcb.

Regards,

Kev
 
i was taught separate circuit or a regularly used lighting circuit on my 17th. only stipulation was interconnections ;)

If you install the Aico Radio link system then you have too supply the bases from the local lighting circuits!
 

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