This AC WORKS brand chainable PDU with a 10ft extension cord [PD4GF-010] meets OSHA requirements and is ETL approved. It features heavy-duty outlets and an anti-cold weather jacket, keeping the cord flexible in harsh temperatures. This generator extension cord has a NEMA L14-30P, 30 Amp, 125/250 Volt, locking plug to (4) GFCI NEMA 5-15/20R, 20 Amp, T-blade household female connectors. There is also an L14-30R outlet, allowing you to chain multiple PD4GF-010 cords together. The GFCI outlets come with status indicator lights and the cable is an SJTW, 10/4, 30 Amp copper wire, with a 300 Volt anti-cold weather jacket. Included with your purchase is a 5-year limited warranty.