Tesla Motors Club

The onboard MS charger has a max capacity of 40 amps. This can be satisfied with a 50 amp receptical (80% of 50). As far as I can tell, the M3 has a max of 32 amps. I’m getting a M3 and was assuming I could install a 40 amp receptical of some kind to meet the 32 amp max (80% of 40). I have not been able to find a 40 amp NEMA receptical, however. There are plenty of 30 and 50 amp models. Is there a reason for this or am I missing something? The reason I care: I’m may be short on panel capacity and 10 amps might make the difference....