just brushing up on the 18th edition before I take the refresher this week. Iv seen Regulation 521.10.202 which basically states cables need to be supported throughout the installation in such a way they do not get in the way in the result of a fire. Does this mean cable clips on ceilings / upper floors are not longer used due to them being plastic?
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Discuss Regulation 521.10.202 - Wiring systems in the UK Electrical Forum area at ElectriciansForums.net
In a nutshell yes there is a thread about this wait and I’ll have a dig about to find it here’s a report on fixings makes good reading if your looking to see which fixings to use
https://electrical.------.org/media/1578/fire-performance-of-cable-supports.pdf
https://electrical.------.org/media/1578/fire-performance-of-cable-supports.pdf
Yes indeed, plastic mini trunking or conduit cant be used anywhere in the building either without fire proof supports at suitable intervals.
This used to only apply to escape routes but in the 18th it applies throughout the building.
This used to only apply to escape routes but in the 18th it applies throughout the building.
Here is one of the threads I’m sure there’s at least a couple of debates about it but the link I posted earlier was published by the IET so that’s about as good as it gets for clarifying regs New cable support regulation 521.10.202 (18th) - https://www.electriciansforums.co.uk/threads/new-cable-support-regulation-521-10-202-18th.169272/
T
The Ghost
Personally I have thought this to be somewhat puzzling, the whole requirements around this subject. Remembering this all came out of the greater London Fire fighter observations that there operatives were being electrocuted from live wires I suppose breaking and dangling and making contact. The puzzle for me is what happened to protection. A cable subjected to flames should surely cause the migration of conductive parts to short out and activate the protection for that circuit. So in a home 6242y or whatever similar type should start to melt and set off the MCB, why doesn't it?
It's not just a case of the possibility of electrocution during a fire but a trip and building accessibility hazard from hanging cables
Plastic mini trunking or conduit is not the problem, they just melt in a fire. Cables within the trunking/conduit are the problem as they can cause entanglement with fire fighters.
Then surely they are exactly the problem, because in the event of a fire they are not doing an adequate job of supporting / protecting the cables within.
To clarify; the new regulation is regarding cable supports.
Sorry mate.... Monday morning and all that....
I missed the bit from your post about "without fire proof supports at suitable intervals."... I'm sure it wasn't there before...
but my reply has it in as well...That's why I posted. It sounded like you were saying plastic trunking was not allowed... end of...
I think I need to go home....
Yes plastic cable clips are now banned, as are red rawl plugs
These regs are mostly for large public buildings but not for your average domestic household.
Places you would normally use metal trunking or tray anyway. Just have to add metal cable ties along with the plastic ones.
I read somewhere else on the forum that ceiling plasterboard is sufficient to stop any cables dropping into the firefighters in the domestic situation.
These regs are mostly for large public buildings but not for your average domestic household.
Places you would normally use metal trunking or tray anyway. Just have to add metal cable ties along with the plastic ones.
I read somewhere else on the forum that ceiling plasterboard is sufficient to stop any cables dropping into the firefighters in the domestic situation.
No worries, respect
I thought that 521.10.202 applied to "your average domestic household"... or have I misread another post???
It applies to all wiring systems as far as I know.
Reply to Regulation 521.10.202 - Wiring systems in the UK Electrical Forum area at ElectriciansForums.net
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