Applications:Type THHN/THWN-2 building wire is intended for general purpose applications as defined by the National Electrical Code (NEC). 4 AWG THHN-THWN-2 is permitted for new construction or rewiring for 600-volt applications. Applications requiring Type THHN or THWN-2, the conductor is appropriate for use in wet or dry locations at temperatures not to exceed 90°C or not to exceed 75°C in oil or coolants. Applications requiring Type MTW conductor is appropriate for use in dry locations at 90°C, or not to exceed 60°C in wet locations or where exposed to oils or coolants. Applications requiring Type AWM conductor is appropriate for use at temperatures to not exceed 105°C in dry locations.Also Known As:4 AWG Copper wire, 4 AWG THWN-2, 4 AWG Building Wire, hook up wire, conduit wire, lighting wire, nylon copper wire, construction cable, 4 Gauge Wire.FeaturesNylon outer jacket for easy pulling. VW-1 rated 14 AWG - 8 AWG. All sizes are rated gasoline and oil-resistant II.Jacket:A tough, polyamide, Nylon outer covering per UL-1063 and UL-83.Standards:Underwriters Laboratories Standards UL-83, UL-1063, UL-758AWM Spec 1316, 1317, 1318, 1319, 1320, 1321ASTM Stranding Class B3, B8, B787Federal Specification A-A-59544NEMA WC70/ICEA S-95-658Institute of Electrical and Electronics EngineersConstrction:Insulation:Color-coded Polyvinyl Chloride (PVC), heat and moisture-resistant, flame-retardant compound per UL-1063 and UL-8Specifications:Size:4 AWGNumber of Strands:19PVC Insulation Thickness (Conductor):1.020 mm / 0.040 inchesNylon Jacket Thickness:0.150 mm / 0.317 inchesOutside Diameter:8.06 mm / 0.317 inchesWeight per Foot: 0.166 lbsAllowable Ampacity:70 Amps at 60℃ / 85 Amps at 75℃ / 95 Amps at 90℃