Jacket Material
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The outer covering of a cable that provides physical protection and determines flexibility and fire rating.
PVC is the most common jacket — cheap and flexible but emits toxic smoke when burned. TPE (thermoplastic elastomer) is softer and more durable for consumer cables. Nylon braided jackets resist tangling and abrasion. Plenum-rated cables use low-smoke FEP or LSZH jackets required by building codes for air-handling spaces.