I wonder if they are also going to try to 'ban' plastic pipe clips in some situations, for similar reasons?
Kind Regards, John
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Kind Regards, John
So are non combustible/melt proof cable clips a requirement under the new amendment like CU's having to be made out of non combustible materials, or is it simply a better alternative than plastic cable clips; I guess it the latter baring what I have quoted below.
They already do require fireproof restraints for fire related circuits.
Following the requirement for "non-combustible" (whatever that means) CUs, people are thinking up all sorts of unrequired add-ons, such as - fire-proof CUs and intumescent seals for the CU spaces and now we are talking about metal cable clips.
You may rightly argue that fixing cables to ceilings with clips which give way in a fire is irresponsible and against present regulations but that is nothing to do with amendment 3.
If future requirements extend to the likes of this then that will be then.
Following the requirement for "non-combustible" (whatever that means) CUs, people are thinking up all sorts of unrequired add-ons, such as - fire-proof CUs and intumescent seals for the CU spaces and now we are talking about metal cable clips.
You may rightly argue that fixing cables to ceilings with clips which give way in a fire is irresponsible and against present regulations but that is nothing to do with amendment 3.
If future requirements extend to the likes of this then that will be then.
Yes, but only for cables in "escape routes" which are "liable to collapse in the event of fire" ('Note 2' of new reg 521.11.201) - so it doesn't really apply to very much.
Kind Regards, John
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No.
I can but presume that they are talking about cables high up in escape routes which could fall down and impede escape if their attachments (plastic clips) melted.
Kind Regards, John
What is your interpretation of 521.11.201 then? I'm taking the This precludes the use of non-metallic cable clips, cable ties or trunking as the sole means of support. Part of note 2 to mean just that, that in escape routes (however you to choose to define that) you cannot use plastic cable clips.
That obviously doesn't mean you can't use clips elsewhere and can't use them in combination with other fixing methods.
Does 521.11.201 not just refer you to 422.2.1 which was there previously - before amd3?
As you implied, what is an escape route in a dwelling?
As you implied, what is an escape route in a dwelling?
We have this type of clip available here - Perhaps it's time for the U.K. to adopt something similar?
It does refer to 422.2.1, but it's quite specific about what you must not do.
An escape route would definitely cover hall/landing and stairs. Beyond that, it would depend on the layout of the house. If you needed to go through the living room from the kitchen to get out of the house, then you'd have to include that too.
An escape route would definitely cover hall/landing and stairs. Beyond that, it would depend on the layout of the house. If you needed to go through the living room from the kitchen to get out of the house, then you'd have to include that too.
Would it?
Would it?
Would you?
So, fundamentally the whole house could be an escape route.
Is that official, or does it not apply to dwellings?
422.2.1 says nothing about cables that may "collapse" due to clips etc. melting in a fire. It talks only about the wiring system not being 'fire propagating'.
AIUI, and as has been said, conventionally it consists of halls, landings and stairs - and becomes particularly important, regs-wise, when there are more than two stories.
Kind Regards, John
521.11.201 applies to all installations, although it is not likely to be an issue in most dwellings, as people do not generally have surface mounted wiring in their home.
Common stairways of blocks of flats etc. are more likely situations, where plastic mini trunking seems to be used for everything.
The low cost answer is this item: https://www.tlc-direct.co.uk/Main_Index/Trunking_Pvc_Index/Dline_SD_CLIPS/index.html
Common stairways of blocks of flats etc. are more likely situations, where plastic mini trunking seems to be used for everything.
The low cost answer is this item: https://www.tlc-direct.co.uk/Main_Index/Trunking_Pvc_Index/Dline_SD_CLIPS/index.html
What do you mean by 'conventionally'?
Is there anything which states dwellings have (official) escape routes and are subject to this regulation?
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