The answer to 'what size EV charger do I need' is that the size of the EV charger you need depends on the electrical capacity of your home and the charging requirements of your electric vehicle. In general, most homes can accommodate a Level 2 EV charger, which provides faster charging than a standard household outlet (Level 1). The size of the Level 2 charger you need will depend on the power output of your vehicle and the electrical service in your home.
To determine the right size EV charger, you'll need to consider factors like the amperage of your home's electrical service, the charging requirements of your EV, and any local building codes or regulations. It's best to consult with a licensed electrician who can assess your specific needs and recommend the appropriate EV charger size and installation.