Nema L5-30R Flanged outlet with Waterproof Cover, L5-30R Lock in 30AMP 125/250V female Power Inlet, 30AMP Generator Inlet ETL Verified Nema L5-30 Power outlet Black Color (ETL verified Nema L5-30R Power outlet, it works with ST STOW STO SJTW etc, 12AWG 10AWG 8AWG 3 conductors cord, Very easy to install. Nice outside cover, it is used for your device to provide electricity whenever you need. It was simple to install & you need only a power source and extension cord to provide power to any devices. 30AMP 125/250V outlet Easy to hook up a transfer switch in the garage and this will either go inside the garage to provide a place to run the cord from the inlet to the transfer switch, or on the outside of the generator box i intend to build.