Protected corridors and ELV cabling

Question

Hi, Does anyone know whether the 422.2.1 requirements for compliance with BS EN 60332-3 fire propagation (bunched cables) also applies to ELV cables including cat 6 cables or is is this requirement limited to LV cable?

AJJewsbury · Accepted Answer

Just check that your corridor is still covered by 422.2.1 - the 2023 corrigendum tweaked the definitions somewhat - and it seems to apply only to "a firefighting lobby, shaft or staircase of a protected escape route". 
 If it does apply, I see nothing with limits the requirements to LV cabling. I suspect part of the issue is smoke etc from cables when they're burnt - the fact that they're ELV rather than LV would make little difference in that regard. 
 - Andy.

gkenyon · Answer

Yes, because it's about the smoke etc. produced in a fire impeding escape etc. 
 BS 7671 applies to ICT cables as well as power/control (as required by BS 6701). This includes optical fibre cables.

Protected corridors and ELV cabling

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