8-AWG Copper THW building wire in white color, has 60-mil thermoplastic insulation that offers protection against electrical threats. This building wire has voltage rating of 600-Volts and current rating of 55-Amps at 90 deg C. It has outside diameter of 262 mil. This 1000-ft building wire comes in coil. It is suitable for services, feeders and branch wiring applications. Building wire is UL listed and meets Federal specification.