Thhn wire is a conductor used primarily in conduit and raceway applications for branch circuits, services, and feeders in commercial and industrial designs as specified in the National electrical Code 2. It is suitable for dry locations with temperatures under 90°c, or wet and oil or coolant applications when temperatures are under 75°c. The wire conforms to UL certifications for 600 Volt conductors. Kit includes black, green, red, & white