I’m looking to order this Charge Point Home Flex for my Hummer because I’ve read some good things on here and on Facebook. I have an electrician that will be coming in the next few weeks to install but I know nothing about what plug I need. I just told the electrician that I need a 240V plug installed for an EV charger and I would provide my own charger. Should I be ordering the 6-50 or 14-50 plug?