Type THW Building Wire is constructed with a heat, moisture and flame retardant polyvinyl chloride compound which is designed for general purpose wiring in residential, commercial and industrial installations. Thw-2 is sunlight resistant. Type THW wires are designed to operate at conductor temperatures of 90oC for dry locations, 90oC for wet locations. The smaller diameter of these wires and cables makes them particularly suitable for rewiring of existing systems. Specifically recommended also for industrial installations where exceptional resistance to heat and corrosive atmospheres are needed, such as chemical plants, oil refineries, paper mills, etc.