NEMA L21-30 Extension Power Cord - 20 Foot, 30A, 120/208V 3 Phase, 8/5 SOOW - UL Listed - Iron Box # IBX-5809-20 - Amazon.com
Tripp Lite Power Extension Cord NEMA 5 15P to NEMA 5 15R 10A 120V 18 AWG 3 ft. 0.91 m Black 120 V AC Voltage Rating 10 A Current Rating Black - Office Depot
Southwire 120-ft 16 / 2-Prong Outdoor Sjtw Light Duty General Extension Cord in the Extension Cords department at Lowes.com