By all means hire an electrician. Request a 14-50 outlet for your big RV. They know how to do this, Do not confuse him by referring to an electric car's EVSE.
2012 Cayenne Red SL traded for:
2013 Pearl White SL Premium
Traded for a Cirrus White 2014 Mercedes B (totaled)
2016 Urano Gray eGolf SEL w/ drive assist
Loved the VW but it sat too low for my old body
Back to a Cirrus White 2017 B250e