Cable clips as per 18th edition.

[ZippyMo]

Friends,

I'm rewiring my brothers house tomorrow. Can someone tell me if the new 18th edition allows me to use the plastic cable clips to secure the cables to joists etc?
Or do I have to replace them with metal ones?

Thanks

ZippyMo
Trainee Sparks

 

[Darkwood]

This is a fundamental teaching in fire alarm courses. When there is a clash then BS 5839 overrules. Furthermore BS 7671 does not cover fire alarms and directs us to BS 5839.

As I have stated. Cable integrity of fire alarms is not just about protecting fire fighters. You seem to have brushed over all my other points???

The cable integrity of a fire system I would agree with has to be maintained in some cases much longer for obvious reason that it needs to remain functional beyond that of general wiring systems.
I was simply saying that if you can show a cable is suitably supported and will not impair the cables integrity nor will it cause premature support failure then there is no reason why imho you cannot do what I said.

The regulations and the end of the day are a guidance and yes of course if you want to belt and braces you follow it all to the T but I have designed this, I understand the regulation and why it exists, had a secondary opinion on it by another designer who has 40yrs experience as well as had it accepted by BC and the local fire service, the regulations are belt and braces because they cannot cover all of life's scenarios and somewhat do agree and see where you're coming from but I believe this particular regulation is over egging the pudding somewhat especially when I can easily demonstrate I can maintain both support (and cable integrity now you bring it up).

Designers are allowed to make excursion from regulations as long as they can show it does not undermine why the regulation exists, is not applicable in your scenario or you can show you have met its purposes in other means.

I made 3 excursions of the regulations one of which had me questioning detection coverage hence I brought in a career designer to confirm my method as I couldn't possible comply due to building make-up without going well beyond what I thought was practical.

 

[Tony Reidy]

Friends,

I'm rewiring my brothers house tomorrow. Can someone tell me if the new 18th edition allows me to use the plastic cable clips to secure the cables to joists etc?
Or do I have to replace them with metal ones?

Thanks

ZippyMo
Trainee Sparks

You only need them if they are exposed if it's behind a plasterboard ceiling then plastic is fine

 

[Deleted member 26818]

Those excursions with the Regulations, were they to Margate?

 

[Dave OCD]

Well I haven't seen them round these parts.