I had an electrician install a NEMA 14-50 outlet in my garage with a 50 amp breaker. My current and previous EVs only needed 32 amps. I left space for future expansion. I use a plug-in EVSE with adjustable current of 16, 24, or 32 amps. I usually set it to 24 unless I'm in a hurry to charge.
Reality: You charge at home overnight. Kia pak is typical 64000Wh. So assuming you actually take it down to 20% and want 100% when you are done, let look at time using simple math. 64000 * .8 = 51200/(charge watt/hours) = Time. This is simplified so, actual times vary slightly longer in general, rounding tie up, blah blah IMPORTANT: Breakers are rated to run at 80% continuous, so your charging amps must reflect continuous load. Breaker = Wire Size = Amps = Watts = Time Typical Level 1 110-120VAC charger is set for: 15A breaker = 14AWG = 12A charge = 1200W = 43 hours Level 2 / 220-240VAC 20A breaker = 12AWG = 16A charge = 3600W = 15 hours 30A breaker = 10AWG = 24A charge = 5600W = 10 hours 40A breaker = 8AWG = 32A charge = 7200W = 7 hours 50A breaker = 6AWG = 40A charge = 9600W = 6 hours As you go up you get rapidly diminishing reductions in time. but make sure your charger matches your breaker. A 40A charger needs a 50A breaker. As that AWG number goes down the cost of the wire goes up quite a bit, and it is harder and harder to work with, and your panel really needs to support it. I have a single 30 amp circuit (24A charger) that I use for two EV's (Niro & Kona) without grief. I have an old 150A panel, and had put in a split breaker15-30/30-15 and ran a 240/30 to my garage when I did some re-modeling around 9 years ago on an NEMA 14-30 socket. Commonly used for an oven or dryer. Unless you are driving > 150mi/day and are only at home for a few hours a night, you will be quite satisfied with a smaller circuit. We generally just trade places in the garage on the weekends and charge (Time of Use) once a week. Check with your electrician, you need to have the amps at your panel.
