THHN Building Wire, Heat, Moisture, Gasoline and Oil Resistant;Simpull(R) Technology For Easier Pulling;Sunlight Resistant Additional Information, Commercial;Industrial Application, Gray Color, Copper Conductor Material, 600 Kcmil Conductor Size, 350 A (60°C);420 A (75°C);475 A (90°C) Current Rating, PVC Insulation Material, 70 Mil Insulation Thickness, Nylon Jacket Material, Made In Usa, +90 °C Maximum Operating Temperature, 61 - Strands, 1024 Mil Outside Diameter, Reel;Spool Package Type, Csa C22.2 No. 7