30 Amp Male to 15 Amp Female RV Pigtail Power Adapter
WEN 120-Volt 30 Amp 3600-Watt Generator to RV Adapter, NEMA L5-30P Twist-Lock Power Plug to TT-30R RV-Ready Outlet GNA030 - The Home Depot
Amazon.com: NEMA TT-30P to L14-30R Adapter Cord,1.5 FT 10AWG 30 Amp 3 Prong to 4 Prong Generator Plug Adapter,Generator to House Inlet Box Adapter Cord : Patio, Lawn & Garden