The BMW wallbox score is likely the similar as other professional wallboxes – the situation is the variety of circuit on which you would set up it. In the US at minimum, electrical code requires that the circuit breaker should really only provide 20% of the greatest load of the breaker. And most household wiring supports a one circuit optimum of 50 amps – if you use a plug-in wallbox with a 14-50 plug on a 50 amp circuit breaker, the most it can produce is 40 amps. Some wallboxes nevertheless assist 48 amps, but only if challenging-wired into your electrical panel (which can be done) – ChargePoint, Wallbox (the charger) and Juicebox models are all capable of delivering 48 amps (if challenging wired), and probable so is the BMW wallbox though any facts readily available is sketchy – that’s why the 48 amps assert possibly.
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 extremely strange), but that demands rewiring circuits and substantially more cost, and genuinely not a lot advantage. Most residence charging will manifest overnight in any case, and you are unlikely to run your EV down to zero daily so standard charging time with a 40 amp shipping will be 6-8 hrs -cutting that down to 4-6 hours is not that much attain with typical charging use situation, for a whole lot far more trouble and expenditure, and undoubtedly not Supercharger territory.
An electrician would be a good notion for any of people situations, but if any individual was wondering Diy without having the vital pre-wiring, you could theoretically just put in a 60 amp breaker and outlet, acquire a NEMA 14-60 plug, established their charging unit to 48 amps, and Voilà! 48 amps to your auto – violating code with the chance of overloading your circuits and burning your residence down. So challenging-wiring to your panel sounds like a far better route if you truly wished or needed 48 amps – additional high-priced than a plug-in but a cut price in the long operate, with some small negatives (charging unit not simply swappable for instance).