I bought a new 240v homebrew system. The system requires a 30 amp circuit and comes with 10 gauge wires (black, white, green) but no plug (so you can connect the plug needed for your situation).
I also recently bought an electric vehicle so I had a 14-50R installed in my garage with a 50 amp GFCI breaker.
I want to connect my system to the 14-50R, so I bought a 14-50P to connect to the bare wires from the system. The issue I have is that the 14-50P has 4 terminals (2 hot, 1 neutral and 1 ground), but there are only three 10 gauge wires coming out of my 240v system (1 hot, 1 neutral and 1 ground). The terminals in my 14-50P are removable, so should I connect the 1 hot, ground and neutral and remove the unused hot terminal? Or should I do something totally different? And am I okay using the 10 gauge wire since the system will only draw less than 30 amps?