What is the outer jacket material of THWN conductors?

The outer jacket material of THWN (Thermoplastic Heat and Water Resistant Nylon-coated) conductors is specifically designed to provide durability and resistance to moisture, heat, and chemical exposure. The nylon coating is a key feature of THWN conductors, as it enhances their ability to withstand harsh environments, making them suitable for both wet and dry locations.

This nylon jacketing serves to protect the underlying insulation from physical damage, moisture ingress, and environmental factors that could otherwise compromise the integrity of the conductor. As a result, THWN conductors are often employed in various electrical applications where enhanced protection is critical. The unique properties of the nylon, including its toughness and abrasion resistance, contribute significantly to the overall performance and longevity of the cable in industrial settings.