just a quick one about a rewire quote

[Lurch]

The wiring "could" be installed in FP200 (etc.) thus it could comply with a remote battery system, however this and its compliance gets complex!

Exactly, which is why it's easier to put a conventional smoke on a relay base with mains interlinking and internal battery with a remote trigger to the IAS. Complies with building regs.

What you state is the best option for most people these days as it does not involve the level of detail design that is required to comply with statutory legislation to deviate from the "norm" thus it does not require the commenusrate level of competence to design and install such deviations from the "norm" which requires a significant level of comptence.

Exactly.

 

[initforthemoney]

Smoke alarms connected to an alarm system do not comply as the cabling is not up to standard, i.e. the batteries are remote from the detectors and sounders and is not fireproof.

What standard does the cabling need to be in a domestic installation?

None of the Aico or similar detectors are fire proof. There is nothing to say they have to be.

The whole alarm system will have its own stand by battery which will supply the back up. It doesnt matter if it is remote.

I have just recently installed a similar system.

 

[batty]

What standard does the cabling need to be in a domestic installation?None of the Aico or similar detectors are fire proof. There is nothing to say they have to be.

The whole alarm system will have its own stand by battery which will supply the back up. It doesnt matter if it is remote.

I have just recently installed a similar system.

I may be wrong but all the alarm smoke detectors I have fitted are powered from panel so if cable gets burned smoke would not work where as most mains smoke detectors have battery back up so if cable gets burned they will still work until they catch on fire.

 

[Lurch]

What standard does the cabling need to be in a domestic installation?None of the Aico or similar detectors are fire proof. There is nothing to say they have to be.

The whole alarm system will have its own stand by battery which will supply the back up. It doesnt matter if it is remote.

You've misunderstood. Domestic mains smoke alarms have built in back-up supplies so don;t need fireproof cabling. If the batteries were remote the cabling would need to be fireproof so the alarms will continue to sound in the event of a fire and a mains failure.

I have just recently installed a similar system.

A remote battery fire alarm type system with no fireproof cable?

 

[initforthemoney]

Indeed i have.

And was all ok'd by the powers that be before i started the install.

This was on a domestic rewire.

 

[Lurch]

Indeed i have.And was all ok'd by the powers that be before i started the install.

Any chance of some more details, type of detectors, type of cable etc... and who are "the powers that be"?

That is not a compliant way of installing smoke alarms.

 

[kme]

Init:

I believe you will find that such an install, "passed by the powers that be" or not; fails to comply with the requirements of BS5839, given the info you have provided.

I`m with Sidewinder & Lurchio on this; if the power source is remote, the cabling needs to be fireproof; which is the main reason domestic smokies have built-in battery supply.

KME