Thhn

THHN (Thermoplastic High Heat-resistant Nylon-coated) wire represents premium-grade 600V building cable featuring a copper conductor with dual-layer protection: PVC insulation and an abrasion-resistant nylon jacket. This versatile wire delivers exceptional performance in temperatures up to 90°C (dry locations) and 75°C (wet locations), meeting UL 83, UL 1063, and optional CSA/RoHS certifications. Available in both solid and stranded configurations (14-6 AWG), THHN excels in commercial, industrial, and residential applications, particularly for conduit and raceway installations. The specialized nylon coating provides superior protection against moisture, chemicals, and mechanical stress, while the thermoplastic insulation ensures optimal electrical performance. Commonly used in machine tools, control circuits, and general building wiring, THHN/THWN dual-rated versions offer additional flexibility for wet location applications. All variants comply with NEC guidelines and NEMA WC 70 standards.