Smoke detector wiring

[Welsh_sparky_21]

Working in a mates house yesterday and noticed his smoke detectors are coming off the socket circuit...should this be changed?? Or is that okay. I know it’s okay to be supplied off the local lighting circuit just curious

 

[telectrix]

depends..is the detector cabling fused dowm accordingto it's csa?

 

[Welsh_sparky_21]

depends..is the detector cabling fused dowm accordingto it's csa?

It’s a 2.5mm coming off the socket up to the Smokey

 

[telectrix]

unconventional but can't see any reg. being broke.

 

[Welsh_sparky_21]

unconventional but can't see any reg. being broke.

Thought that, normally I would take it off the lights. Or it’s own dedicated circuit, never seen that before though

 

[westward10]

If it is a ring final circuit it requires suitable circuit protection to BS1363.

 

[Lister1987]

560.10 states 5839(-6) should be complied with;

15.4.a.i. states an independent circuit is permitted.

15.4.a.ii states a local lighting circuit is permissible

The above described Installation is neither, therefore does not meet 5839-6 and as such 560.10 is not complied with.

HOWEVER the installer can list it as a deviation from standard and it would them comply with 560.10 however the liability is on the installer should something go wrong or the system not function.

 

[littlespark]

Is it just one smokey?
Interlinked? That’s a 2.5 and a 1.5?? Getting crowded in the connector.

 

[pc1966]

It is not my area, so I looked up the instructions for the Aico Ei140RC out of curiosity and was a little surprised to see no mention of maximum OCPD limits!

I would have though something like a 10A MCB (typical maximum for lights) would be specified, but nope....

 

[westward10]

BS5839:1 or 6 is generally not concerned with circuit protection just compliance with BS7671 is maintained however it does suggest circuit configuration.