Discuss Plastic trunking over a door way in the Electrical Forum area at ElectriciansForums.net

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The use of fire-resistant clips to avoid premature collapse of cables is obviously a good thing, but what about when the cables are in plastic (PVC-U) trunking that offers metal clips for this reason. The reason for asking is I am looking at some options just now (Marshall-Tufflex Mono Plus 20) and it claims:
  • Suitable for dado application
  • Self extinguishing and non-flame propagating PVC-U
  • Fire clips available to secure cables within trunking and prevent premature collapse in the event of a fire
Is there something I am missing as in the event of a fire I would assume the PVC trunking would simply melt and the clips would be useless?

TL;DR: Is plastic trunking with metal clips OK above a doorway?
 
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