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Is it safe to say that all PVC jackets are inherently UV-resistant?

April 26, 2017inherently Jackets PVC safe uv-resistant

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Is it safe to say that all PVC jackets are inherently UV-resistant?

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No. I wouldn’t rank PVC very high on the UV-resistant chart because its plasticizers will outgas when exposed to UV and even to oxygen. So over time, PVC will become brittle. Usually a nylon coating on PVC will help its resistance to UV. That’s the THHN type wiring that the National Electric Code specifies, so you have to have something in addition to PVC that’s for a UV application.