Taking delivery of a PRO S today. Have a question about how to setup for L2 charging. We currently also have a 5th wheel RV capable of 50amp service. I was thinking of installing one setup outside where I can plug the RV in or plug the EV in. Do I need to put an EVSE in for the EV, or can I just get the right cable to go from 50 amp outlet to the EV? I hope this makes sense ...