AC WORKS 1.5 ft. L14-30P 4-Prong 30 Amp Generator Plug to 6-30R 3-Prong 30 Amp 250-Volt HVAC Female Adapter L1430630-018 - The Home Depot
Amazon.com: Power Converter, L14-30P Twist Lock Generator 220/250V Male Plug to TT14-50R 110/125V RV Travel Trailer Camper Motor Home Female Socket Receptacle Outlet Cable Electric Cord Adapter FX125V864 : Automotive
3 ft. 30A 125/250V Generator Y-Adapter Cord - Champion Power Equipment
30A Generator Adapter - Male Plug A10-G3030AVP – United RV