Can a regular speaker cables PVC jacket survive 120°C atmosphere? Or do I have to use some other cable?

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  • Maybe I could try to separate the whole cable, but I can't use the cable naked because the space where I am installing it is moist also:/ but I will still try to separate it from heat somehow.
    – Oneprime
    Jan 17, 2016 at 9:21
  • well i would test it , i think it's a lot tho, have you thought of trying cloth wire? I've seen them getting some black burns from time to time but could work... especially if its a fat one!
    – frcake
    Jan 18, 2016 at 8:58
  • This question seems better suited to electrical engineering stack exchange.
    – MickLH
    Jan 20, 2016 at 5:00

1 Answer 1


You have to use some other cable.

I usually go with Teflon in difficult thermal situations.

In general, the thermal performance of PVC may be severely inadequate for the 120°C conditions you've mentioned. Many forms of PVC insulation are rated as low as 80°C. Here are some supporting references to back up this claim:

See Semi-Rigid PVC (SR-PVC) under the Plastic materials:


See sub-heading UL Style 1007, CSA TR-64 under Polyvinylchloride (PVC) Insulated UL/CSA Hook-Up Wire:


See PolyVinyl Chloride (PVC) under the Thermoplastic heading:


  • 2
    Useful solutions in low-risk-of-damage may also include Silicone (150 to 250 deg C rated are most common) or glassfiber reinforced Silicone (200 to 350 deg C most common) - The latter is better suited for rough or sharp terrain, sometimes usually even better than PVC. But then, Teflon itself is also very soft. Might be good to include that in the advice; if there's sharp edges or a lot of rough abrasion that won't always do. (light abrasion should be fine as Teflon is slick as hell, but requires testing).
    – Asmyldof
    Jan 20, 2016 at 18:02
  • Thank you for the help! I bought some silicone cable which should endure temps from -80 celsius to 260 celsius:)
    – Oneprime
    Jan 25, 2016 at 7:08

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