john@total Posted March 12, 2009 Share Posted March 12, 2009 Hi Fellas just a quick one, i have been asked by a landlord to install some non interlinked 240v smoke detectors in x3 flats. Accourding to her and her council surveyor the 3 flats don't need to be interlinked, which i find strange, also do the detectors need there own feed stright to the dis board and put on a seperate rcd or can the be tapped off a lighting ring main? john Link to comment https://www.thesecurityinstaller.co.uk/community/topic/27518-240v-mains-detection/ Share on other sites More sharing options...
Rulland Posted March 12, 2009 Share Posted March 12, 2009 Hi, I would have suggested interlinked-but get in in writing if they don't!. As far as the feed-the only stuff really that should be fed of the lighting circuit is lights/emergency lights IMHO. Richard. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/27518-240v-mains-detection/#findComment-228571 Share on other sites More sharing options...
aismoresecur Posted March 12, 2009 Share Posted March 12, 2009 BS 5839: Pt.6 states that a Grade D system (domestic mains smoke and heat alarms with a back-up supply) may be wired either from a dedicated circuit or from a regularly used lighting circuit; it also refers to radio- linked systems as being acceptably wired in this manner. Wiring from a lighting circuit is advantageous as it is unlikely the user will deliberately or accidentally turn the circuit off, which is more likely in the case of a dedicated circuit. Hope this helps. Rab Link to comment https://www.thesecurityinstaller.co.uk/community/topic/27518-240v-mains-detection/#findComment-228588 Share on other sites More sharing options...
MatonTE1 Posted March 12, 2009 Share Posted March 12, 2009 Hi Fellasjust a quick one, i have been asked by a landlord to install some non interlinked 240v smoke detectors in x3 flats. Accourding to her and her council surveyor the 3 flats don't need to be interlinked, which i find strange, also do the detectors need there own feed stright to the dis board and put on a seperate rcd or can the be tapped off a lighting ring main? john Is it three rooms in a house or purpose bulit flats?When you say not interlinked,do you mean between each flat or in each flat? Link to comment https://www.thesecurityinstaller.co.uk/community/topic/27518-240v-mains-detection/#findComment-228590 Share on other sites More sharing options...
lawandorder Posted March 12, 2009 Share Posted March 12, 2009 I would wire them from the nearest reguarly used light, if they are on a dedicated breaker and it trips there is a good chance it will be overlooked whereas a non working light will be quickly noticed. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/27518-240v-mains-detection/#findComment-228594 Share on other sites More sharing options...
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