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.
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.
IEE guide says they are 'required' to be interlinked
The IEE giude states that they are required to have a battery backup.
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
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
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
anyone can say Made To BS..but it needs independent Testing to confirm
email@example.com (Niel A. Farrow) wrote in message
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.
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