For what it's worth, I personally agree. I've personally never done the former and have always been the latter,...Never put an isolator on a smoke alarm circuit and make sure it’s on a lighting circuit
That's all very well, but it doesn't address (and one wouldn't expect it to address) the issue of the isolation that would be required if one needed to work on the fixed wiring supplying the base of an unpluggable alarm (which I have acknowledge to be such a rare event as to not warrant consideration) - so I'm not sure what point you are trying to make.Isolation and remote silence facilities. BS5389-6
Approximately 3 months without power for the battery to deplete with Ei Electronics/Aico.With re-chargeable ones, unless the battery does not live up to its expected life expectancy, that would presumably only happen after a pretty long period without mains power? Anyway, from what you say, it sounds as if, at least with yours,it won't beep with mains failure, provided the battery remains OK?
That would certainly be my personal inclination, but (for whatever reason) I've read quite a lot of contrary opinions about that.
Why is that - because the burglar alarm 'chimes up' in the event of mains failure?
It's the same as for any other circuit.the issue of the isolation that would be required if one needed to work on the fixed wiring
Yes, it would.If the arms are wired to a lighting circuit, without any intervening switch/isolator, then the whole lighting circuit would have to be de-energised
yes, but that was after (and before I repeated it) I had written that I regraded the need for such work as such a once-in-a-blue-moon occurance that it didn't warrant consideration. And when someone wrote what you have just repeated, I confirmed that such was also my view (for the same reason).As someone said earlier work on them in the daylight, warn the tenants or whoever.
On the contrary, I tire of having to spend time thinking about, and ask/write about, 'uncertainties/' due to people raising 'problems' that often don't exist. You don't have to look far at all to see people advising FCUs, key switches or whatever for feeds to alarms, and some of them also advocate are pout into my mind, very often unnecessarily.. In fact, only today the thread here that moved me to start this one saw people talking about such things.You like problems that don't exist....maybe?
I've already been through that with flameport.The Ei base meets the isolation requirement of BS 5839-6 where powered from a regularly used local lighting circuit.
Exactly what I've been saying (x3) - so why are you seemingly arguing?It's the same as for any other circuit.
The presence of connected equipment changes nothing.
Yes, it would.
Just like working on any other circuit.
What on earth are you talking about? Did you not read what I wrote in the very first significant paragraph in the very first post in this thread, namely ...@JohnW2 Just stop procrastinating and fit mains powered inter connected smoke and heat alarms from a lighting circuit
I will be installing a few (probably Aico) interconnected (hard-wired) mains-powered (and re-chargeable battery backed-up) smoke/heat/CO alarms. .... I am personally no fan of supplying such things from a 'dedicated' circuit, much preferring to power them from the ground floor lighting circuit (whose failure would be rapidly noticed).
So you know what to do and how to do it so what's all this about?What on earth are you talking about? Did you not read what I wrote in the very first significant paragraph in the very first post in this thread, namely ...
As I've said, that's exactly what i am going to do.Regarding wiring of smokes. To me, you take a 3 core+E from the smoke at the top of the house, run this down to the next floor/smoke etc. until you get to the ground floor smoke. At this last smoke, you can either take a cable to the ground floor light circuit, or run a few more meters into the CU, where you can connect it to the light circuit RCBO, or do whatever you wish with it.
As I've said, I have already decided to feed the alarms (as well as possibly other things such as you mention) from the downstairs (6A) lighting circuit.You could have a B6 RCBO where you could connect as many of the following to it as you wish. Smokes, Burglar Alarm, 1 light near CU, door bell
Why ?I would want the boiler on it's own, ...
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