PowerTech 15A GFCI extension cords and adapters are the best in the industry for applications requiring ground fault safety protection, maximum performance and reliability. The GFCI solid state construction provides years of trouble free protection and interrupts the electrical circuit to a load when a fault circuit of 6mA or more is detected. PowerTech GFCI's need to be manually reset after a trip incident, an important feature that prevents the equipment from restarting unattended after the incident. Our SJTW (300V) cords use soft-drawn, bunch stranded 100% copper with molded on plugs and connectors which have large strain reliefs that prevent the ends from pulling away from the cord body. Our cords are manufactured with cold weather insulating and jacketing compounds. As a result, PowerTech cords are extra flexible in temperatures well below freezing.