Your installer is wrong, the CAN buss cannot power a camera, or anything else. CAN is used for high speed communication between controllers and devices and sensors. The prewire definitely has 12v for a camera.
daveo4EV
has the right idea; if the actual circuit breaker is not tripping it is not an over current and is probably a issue with the GFCI itself or how the charger is interacting with the GFCI. If the GFCI is old or an off brand try changing it out for a Leviton.
90% of the people buying a Macan EV will not notice the performance difference between the 20s and the 21s. But the 20s will, supposedly, give you a little better range and will be quieter and better off road.
I saw this note on Test cycles on page 17 of the EPA Test Data. The note states Porsche chose to test these at 55 mph and not 62. If this is what they did then the stated range is higher than what it would be at 62 mph, which is the normal test speed. Comments?
"Test cycles: Porsche chose...