The answer to 'what size EV charger installation do I need' is that the size of the EV charger you need will depend on the power output of your electric vehicle and your home's electrical capacity. Most residential EV chargers range from 16 to 50 amps, with 240V Level 2 chargers being the most common choice for home use.
To determine the right size, you'll need to consider factors like your EV's maximum charging rate, the available electrical capacity in your home, and any local code requirements. It's generally recommended to install a charger that matches or slightly exceeds your EV's maximum charging rate to ensure optimal charging times. However, you'll also want to make sure your home's electrical system can handle the load without overloading circuits or tripping breakers.