Review on Leviton 2711 Industrial Grade 30 Amp Locking Plug - NEMA L14-30P, 125/250 Volt, Grounding, Black-White by Jacob Fish

Thank goodness Revain had them in stock before Hurricane Irma hit Florida. Local stocks were long gone, but I was able to finish my generator cable 2 days before the hurricane made landfall. The connectors inside took the 6 AWG wire I had laying around, but the wire clamp/strain relief struggled with 3/1 that size. I'm pretty sure this will work fine with 10 AWG. It worked perfectly for 2 days before the power came back. FYI there is nothing waterproof on this fork so I filled the back with silicone sealant as it will be used in heavy rain.