10/3 25 Foot Outdoor Marine Shore Power Extension Cord at Menards®
Amazon.com: Parkworld 60943 Marine Shore Power Extension Cord 50 AMP SS2-50P to SS2-50R, Marine Shore Power Cord SS2-50 Male to Female 50A 125V/250V (36FT) : Tools & Home Improvement
VEVOR RV Power Cord 30 amp Extension Cords 30 ft Heavy Duty TT-30P Marine Shore Power Cord STW 10AWG/3C, Waterproof for Mobile Homes and Recreational Areas - Walmart.com