You CAN install a 60 amp breaker and use a NEMA 14-60 plug with a 48 amp rated wallbox for a plug-in setup (which would be very uncommon), but that necessitates rewiring circuits and noticeably additional expense, and really not significantly advantage. Most residence charging will take place right away in any case, and you are not likely to run your EV down to zero daily so regular charging time with a 40 amp shipping and delivery will be 6-8 several hours -cutting that down to 4-6 several hours is not that a lot attain with usual charging use circumstance, for a whole lot far more trouble and expense, and surely not Supercharger territory.
An electrician would be a very good plan for any of people situations, but if anyone was thinking Do-it-yourself without having the vital pre-wiring, you could theoretically just install a 60 amp breaker and outlet, acquire a NEMA 14-60 plug, set their charging device to 48 amps, and Voilà! 48 amps to your car – violating code with the risk of overloading your circuits and burning your property down. So difficult-wiring to your panel appears like a far better route if you genuinely needed or essential 48 amps – much more highly-priced than a plug-in but a bargain in the prolonged operate, with some small cons (charging device not simply swappable for case in point).