Heat resistant power cable - availablility

[steamer14]

I'd like to run a (spur) power cable alongside central heating pipes in a PVC surface mounted conduit about 50mm square in section.
Can anyone advise me, please, if there is a form of 240v cable that wll withstand this heat for prolonged periods?
If necessary I could enclose the two 15mm copper pipes in pipe insulation, inside the conduit. Would that help, please?
Any help, information or advice will be gratefully received.
TIA
CJ

 

[EFLImpudence]

http://www.tlc-direct.co.uk/Products/CA2dot5TQ3slash50.html

It would be a good idea to insulate the pipes anyway.

 

[seasickstevie]

Two pipes encased in insulation inside a 50mm trunking ain't gonna to leave much room for your cable.

It's all going to be a bit squashed in there.

The fact that it's heat resistant isn't going to help the current carrying capacity when it gets very warm - which it will do despite any insulation.