The cable shall be sheathed overall with a PVC (polyvinyl chloride) outer sheath. The outer sheath shall be of smooth and uniform composition and free of holes. Cracks blisters and imperfection.
As protection against termite attack, the outer covering shall contain the termite repellent substance of Pb naphthenate.
The outer sheath shall be of adequate strength and thickness to withstand the test voltages armored cable lifetime and mechanical tests and shall be suitable for the ambient conditions at the site.
The outer sheath material shall be capable of withstanding without damage or deformation the highest temperature achieved with the cable at its rated current and at the site ambient conditions.
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