Pro Glo Lighted Outdoor Extension Cord with Continuous Ground Monitoring, SJTW, 10/3 Gauge, Personalized With Your Name and Phone Number &hellip; (Green, 25 Feet) Manufactured to 10/3 AWG (American Wire Gauge) specifications. Each of the three conductors contains 104 strands of 30 gauge 100% copper wire. Type: SJTW thermo vinyl coldweather compounded jacket guarantees the cord not to crack nor become brittle, and remain flexible in temperatures below freezing. These extension cords provide Continuous Ground Monitoring (CGM), an OSHA safety requirement. A green neon light in the female connector lets you know at-a-glance that there is ground continuity. U.L. Listed, CUL (CSA) Approved