Amazon.com: Tripp Lite Heavy Duty L5-30P to L5-30R Power Extension Cord with Locking Connectors, 30A, 125V, 10 AWG, NEMA L5-30P to NEMA L5-30R, 6-Feet / 1.83 Meters, Lifetime Limited Warranty (P046-006-LL-30A) :
L530TT 30A 125V NEMA L5-30P to RV 30A TT-30R Rubber Cord With Handle – AC Connectors
AC WORKS 10 ft. SOOW 10/3 3-Prong NEMA L5-30 125-Volt 30 Amp Generator Rubber Extension Cord L530PR-010D - The Home Depot
20 Amp NEMA TT-30P to L5-30R Power Extension Cord Adapter - Twist Lock – GearIT
Superior Electric RVA1555 Generator Extension Cord 30 Amp 3 Pole SJTW 10AWG/3, 40ft
Locking Power Cords. L5-30 Extension Cords - Molded, UL Listed, 30A, 125V, 10/3 Wire
Champion Power Equipment 25-Foot 30-Amp 125-Volt Fan-Style Generator Extension Cord (L5-30P to three 5-15R) at Tractor Supply Co.
Superior Electric RVA1558 Shore Power Extension Cord 30 Amp STOW 10AWG/3, 25ft