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Laurie
 
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Default Smoke Alarms in domestic/holiday homes - new build, bank holiday wiring

Hi,

Do smoke alarms have to be:

A. wired from a separate wat in the consumer unit, and

B. limked together?

Many thanks for your continued support!

Laurie


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Pablo
 
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Default Smoke Alarms in domestic/holiday homes - new build, bank holiday wiring

Do smoke alarms have to be:

A. wired from a separate wat in the consumer unit, and

No. They can be supplied from a local, regularly used lighting circuit.
B. liked together?

Yes.

Source: On-Site Guide para 7.4.1


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Laurie
 
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Default Smoke Alarms in domestic/holiday homes - new build, bank holiday wiring

Thanks Andy,

It is the right way to do it, but I am stuck in rural Devon on a BH, nearest
DIY store is 1 hr drive!!!!

Might have to bodge it!

Laurie
"Andy Hall" wrote in message
...
On Sun, 24 Aug 2003 22:59:56 +0100, "Laurie"
wrote:

Thanks Guys,

I don't have any three core and earth wire (i.e. L,N&E + Interconnect),

can
I use two lots of 1mm^2 T&E i.e. one for L,N&E the other for interconnect
(providing I remember which is which!)?

Laurie


You could do, and I am not aware of any regulation saying that you
can't, but it has the potential of creating confusion so is not really
a very good idea.

Where twin T&E is used for wiring single lights, it's quite common
practice to label the black wire coming from the switch (the switched
live) with red insulating tape.

For this example, I suppose you could label the switched common wire
with yellow tape.

Cable is very cheap, so to be honest, I would buy some of the right
stuff. When you come to look at the wiring in a few years time and
want to change something, you will be pleased you stuck to the
conventions.


.andy

To email, substitute .nospam with .gl



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John Armstrong
 
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Default Smoke Alarms in domestic/holiday homes - new build, bank holiday wiring

On Sun, 24 Aug 2003 23:23:55 +0100, "Laurie"
wrote:

Thanks Andy,

It is the right way to do it, but I am stuck in rural Devon on a BH, nearest
DIY store is 1 hr drive!!!!

Might have to bodge it!


http://www.screwfix.com/app/sfd/cat/...00054&id=12436

9.42 for 50m + 5.95 handling (free if you find a few more things you
need to push the order over 45.00)
Probably still cheaper than the sheds including the delivery.


--
John
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Niel A. Farrow
 
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Default Smoke Alarms in domestic/holiday homes - new build, bank holiday wiring

In article ,
Laurie wrote:
Hi,

Do smoke alarms have to be:

A. wired from a separate wat in the consumer unit, and


IEE on site guide states that they can be supplied from a seperate
MCB/fuse which is not RCD protected, OR a regularly used lighting
circuit, which is also not RCD protected. The TLC (on-line electrical
suppliers) smoke alarm guide however states that only battery back-up
alarms can be connected to a light circuit, and non-battery back-up
larms have to have their own circuit.


B. limked together?


IEE guide says they are 'required' to be interlinked

Many thanks for your continued support!


The IEE giude states that they are required to have a battery backup.

Laurie

Incidentally, the screwfix mains optical smoke alarm (non-battery
back-up) are a different make to the mains ionisation alarms (battery
back-up) and the instructions state they are not compatible with other
brands!
Neil



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Gel
 
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Default Smoke Alarms in domestic/holiday homes - new build, bank holiday wiring

AC only smoke/heat alarms in 2000 Approved Document B, which covers
England & Wales, conbfirms that this type must be connected direct to
unswitched/dedicated spur on consumer unit.
Those with battery back up, can come off adjacent unbswitched lighting
circuit.
This brought Bldg Regs into line with IEE Regs; Document B is free;
download off links page at web site below.

AC only will be cheaper to buy, but not when installed,
& are as much use as a chocolate teapot in a power cut;
or what the Yanks delightfully call a brown out!!


Manuals [pdf's] with wiring diagrams at www.smoke-alarms.co.uk

Would be wary of some Screwfix list as dont appear to be BS
Kitemarked;
anyone can say Made To BS..but it needs independent Testing to confirm
compliance.

(Niel A. Farrow) wrote in message ...
In article ,
Laurie wrote:
Hi,

Do smoke alarms have to be:

A. wired from a separate wat in the consumer unit, and


IEE on site guide states that they can be supplied from a seperate
MCB/fuse which is not RCD protected, OR a regularly used lighting
circuit, which is also not RCD protected. The TLC (on-line electrical
suppliers) smoke alarm guide however states that only battery back-up
alarms can be connected to a light circuit, and non-battery back-up
larms have to have their own circuit.


B. limked together?


IEE guide says they are 'required' to be interlinked

Many thanks for your continued support!


The IEE giude states that they are required to have a battery backup.

Laurie

Incidentally, the screwfix mains optical smoke alarm (non-battery
back-up) are a different make to the mains ionisation alarms (battery
back-up) and the instructions state they are not compatible with other
brands!
Neil

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ARWadsworth
 
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Default Smoke Alarms in domestic/holiday homes - new build, bank holiday wiring

Incidentally, the screwfix mains optical smoke alarm (non-battery
back-up) are a different make to the mains ionisation alarms (battery
back-up) and the instructions state they are not compatible with other
brands!
Neil


Most smoke alarm manufacturers state that their products cannot be
interlinked to another manufacturers alarm.

Also, I prefer to run the smokes (with a battery backup) off the lighting as
it is soon obvious that there is no mains power.

Adam


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