parkworld Generator 30 Amp Locking 4-Prong L14-30P Plug to 30 Amp 3-Prong L5-30R Outlet Splitter Adapter(NEMA L14-30P to L5-30R) 884913 - The Home Depot
AC WORKS 1.5 ft. L14-30P Generator 4-Prong 30 Amp Plug to (4) NEMA 5-15/20R 20 Amp Household Female Connectors Adapter Cord L1430F520-018 - The Home Depot
NEMA TT-30P to Triple 5-15R Generator Power Cord Adapter | 30A to 15A/ – Journeyman-Pro
AC WORKS 5 ft. L14-30P Generator 4-Prong 30 Amp Plug to (4) NEMA 5-15/20R 20 Amp Household Female Connectors Adapter Cord L1430F520-05 - The Home Depot
parkworld 2 ft. 12/3 3-Wire 20 Amp 125-Volt NEMA 5-20P to L14-30R Generator Adapter Cord 886672 - The Home Depot
Utilitech Generator cord Generator Cord in the Generator Accessories department at Lowes.com
Leisure Cords RV Generator Adapter with 30 Amp 4 Prong Locking Male Plug to RV 50 Amp Female Standard Connector (4-Prong) - Walmart.com