Check the listing for details. 30AMP 120V L14-30P to TT-30R Generator Plug Adapter – Heavy Duty. Condition: New. Listed at 10.99 USD. Leisure Cords 30AMP 4 Prong Nema 14-30P-TT-30R Generator Adapter Plug RV Free Expedited Shipping Ships Same or Next Day ---Quantity: 1 ---Leisure Cords Generator RV Power Adapter, 30AMP Male 4-Prong Locking Plug to 30 AMP RV Nema TT-30R female AC generator to RV Camper Power adapter ---NEMA 14-30P 30A 125/250V 3-Prong Locking Male plug connect to the generators,TT-30R Female RV Socket connect to the RV Camper power cord. ---Maximum Power up to 3750W @ 30A 125/250V ---14-30P Locking Plug to TT-30R Standard Connector ---Durable PVC construction. ---Suitable for generators, transfer switches, RV, trailer & camper welding equipment, practical for locking tightly on generator to prevent loosing and falling out, working perfectly for your electrical set-up.