Wiring Alarm Circuit

[ScottishGasMan]

Fitting some Mains wired smoke alarms in the house, and also hard wired Carbon monoxide detector. Now the fire alarms have 9v battery backups but the COD doesnt,

I was wandering if wiring the hall light onto the citcuit would contravene regs?

Just so if it ever did trip for any reason I would be alerted to the fact reasonably quick. Alarm circuit is on 1.5mm T+E on 6A RCBO.

 

[RF Lighting]

It is acceptable to supply smoke alarms from a regularly used local lighting circuit.

 

[PrenticeBoyofDerry]

Are you talking about the CO detector to lighting?

 

[PrenticeBoyofDerry]

It is acceptable to supply smoke alarms from a regularly used local lighting circuit.

But should they have an independent isolator, if using this method?

Wiring of smoke alarms
The detectors are required to:
a) be linked, so that the operation of one will initiate all
b) be permanently wired with independent circuit to CU or supplied from local regularly used lighting circuit. (there should be a means of isolating the supply without switching off the lighting circuit).
c) have a standby power supply.

 

[RF Lighting]

Not that I'm aware of unless it's specified in the MIs.

I'm of the opinion that the harder it is for them to be isolated the better.

 

[PrenticeBoyofDerry]

Something from approved doc part b that I recall.
http://www.planningportal.gov.uk/uploads/br/BR_PDF_AD_B1_2010.pdf
1.19 (page 18 power supply)

 

[EFLImpudence]

I'm of the opinion that the harder it is for them to be isolated the better.

I agree. Especially in rented properties.

1.19 (page 18 power supply)

About as useful and contradictory as most Approved Document guides

 

[EFLImpudence]

double post.