100% True 4AWG Stranded Copper Made with high-conductivity stranded copper for superior flexibility and low resistance. Ensures stable power delivery for home, automotive, RV, solar, inverter and industrial projects. "THHN/THWN-2 Rated for 600V Built with thermoplastic insulation and a protective nylon jacket, supporting up to 600 volts. Provides strong resistance to chemicals, oil, gasoline, and moisture for both indoor and outdoor electrical applications." Heat & Abrasion Resistant Engineered with high-temperature thermoplastic insulation rated for 90°C in dry locations and 75°C in wet environments, delivering reliable performance in conduit runs and demanding electrical installations. Flexible & Easy to Route Stranded copper core and smooth nylon jacket allow easy bending and installation. Perfect for DIY electricians and professionals needing reliable 4 gauge wire. What Is THHN Wire? THHN means Thermoplastic High Heat-Resistant Nylon-Coated. It features PVC