smoke detectors

[barbroadside]

hi
please could someone tell me, with the electric smoke detecotrs go on to a lighting ring or power ring or on their own

thanks

 

[Adam_151]

Either on their own circuit or on a regulary used lighting circuit (if battery backed I beleive)

Don't like the idea of non battery backed alarms at all (are they even still available?) , and can see the advantage of putting alarms on a regulaly used lighting circuit (if it should trip for whatever reason, you know about it pretty quickly)

 

[luminaire]

They can go on a lighting circuit or on their own dedicated circuit.
Why do you ask?

 

[barbroadside]

i am thinking of putting one in a room i am decorating but i know it is not possible for a electrician to wire back the fusebox due to wooden floors,
but if it can go on the existing lighting ring then that would be fine

thanks everyone
barb

 

[FingRinal]

Lighting circuit only if smoke alarms also have battery back up (Grade D system). If they don't have battery back up (Grade E) then it's a dedicated circuit from the consumer unit.

 

[Pensdown]

If you intend to feed the SA from the lighting circuit you should note 1.19 in the (approved document Part B)

There should be a means of isolating the power to the SA without isolating the power to lighting circuit.

Edit..change part

 

[Pensdown]

Lighting circuit only if smoke alarms also have battery back up (Grade D system). If they don't have battery back up (Grade E) then it's a dedicated circuit from the consumer unit.

Can you quote the section or reference number as I thought grade D was the minimum requirement?

 

[FingRinal]

Lighting circuit only if smoke alarms also have battery back up (Grade D system). If they don't have battery back up (Grade E) then it's a dedicated circuit from the consumer unit.

Can you quote the section or reference number as I thought grade D was the minimum requirement?

Minimum requirement for what exactly?

 

[Pensdown]

Part B....1.3

Edit..same

 

[FingRinal]

Who is talking about Part M? You raised it, I've not commented on it (Part M).

 

[Pensdown]

Typo. Part B

 

[FingRinal]

I think what your question is getting at is answered by asking whether the smoke alarms are being installed in a new build, a refurb, or an installation in an existing dwelling. I don't know the answer to that as the OP doesn't say...

 

[Pensdown]

The only regs I'm aware of are for new builds. Are there any other regs?

 

[FingRinal]

Well, BS7671 applies to ALL electrical installations and not just new ones.

 

[Pensdown]

Lighting circuit only if smoke alarms also have battery back up (Grade D system). If they don't have battery back up (Grade E) then it's a dedicated circuit from the consumer unit.

All I'm asking is where does it say that?