Manufactured to 12/3 AWG (American Wire Gauge) specifications. All copper is soft drawn & annealed for maximum flexibility under full load. Our Pro Star® PVC insulation and jacket guarantees working flexibility in temperatures down to -40°F. SJTW outside jacket is rated at 300 volts. We use heavy duty molded on 15A-125V NEMA 5-15 plugs & connectors that will not pull away from the cord body. cETLus and OSHA Listed for USA and Canada. Blue color.