Amazon.com : Rophor 50 Amp Generator Cord 15 Feet, NEMA 14-50p to CS6364 & SS2-50R Generator Emergency Power Cord, STW 6/3 + 8/1 AWG, 125/250V, 12500 Watts, Perfect for Generator to House
Champion Power Equipment 50-Amp RV Generator 30-ft / 1 3-Prong Outdoor Heavy Duty Locking Extension Cord in the Extension Cords department at Lowes.com
Champion Power Equipment 25 ft. 30 Amp 125-Volt Fan-Style Flat Generator Extension Cord 100436 - The Home Depot