I have a 120V outlet good for 3 miles/hour charge rate which is sufficient for my daily commute, but having the option to completely charge from empty overnight for consecutive weekend longer distance trips would be nice. I understand a 14-50 requires a 50A breaker and allows charging at up to 40A (about 28 miles per hour), while a 14-30 requires a 30A breaker and allows charging at up to 24A (about 17 miles per hour). I have an induction cooktop (240V, 32A max) and oven (240V, 17A max) on an existing sub panel fed from the main panel by a 50A breaker. A licensed electrician suggests he could (according to building code) install a 50A breaker on the sub panel running to a 14-50 receptacle for charging. However, using the oven or cooktop during charging would probably trip the 50A breaker at the main panel feeding the sub panel. Has any one else had to live with a similar arrangement? Would it be better to install the 30A breaker and 14-30 receptacle instead, leaving approximately 26A of "free capacity" for use for the cooktop? The cooktop has 4 burners, rated at 8A, two at 10A, and one at 15A. Any other options I've missed?