Amazon.com: 25 Feet NEMA L14-30P/L14-30R Generator Extension Cords, 4 Prong Heavy Duty, 30 Amp,125/250V,Up to 7500W 10AWG Cable and The Cable UL Certification,Yellow : Patio, Lawn & Garden
Leisure Cords 4-Prong 30 Amp to 15 Amp Tri-Outlet Generator Power Cord 25 Feet, 10 Gauge Heavy Duty L14-30 to 3X 5-15R 125/250V 7500W (25 Feet) - Walmart.com
DuroMax 240v 30A 10GA 25Ft Generator Cord with Cord Hanger — Garage Department
Champion Power Equipment 25 ft. 240-Volt Generator Power Cord 48033 - The Home Depot