For the past 3 – 4 weeks I have been having trouble charging my year-old Model 3 on 220 volts using the mobile charger. It will charge for 10-20 minutes and then trip the breakers. I took it in to the Tesla shop and it charged fine using my mobile charger. I have 2 garages each with a 220 hook-up. It flipped and continues to flip the breakers at both places starting after a software update (the one before 2020.28.6). The car has charged without flaw for over a year at both places and still charges fine with 110 volts. Any ideas.