Tesla Motors Club

Ok, so I have a rented model Y. I have a work garage with a 200 amp panel and really less than 20 amps pulling from it at any given time. I am using a mobile connector with a 14/50 dongle and when I plug it in the max charge rate I can get is 16/32 amps, approx 14 mph, regardless if the battery is at 10% to 80% SOC. I verified all connections are tight in the panel, breaker, plug, car, dongle. I tested each hot to verify its getting 120 volts separately and 240 volts combined.

I took the car and plugged it into another 14/50 plug at a different location and it goes straight to 32 amps and 29/30 mph charge rate.

I had an electrician friend come check connections and verify with his meter and he cant find anything wrong. I tried a different breaker and different nema 14/50. Its 6 gauge wire, 50 amp breaker, and total length of cable is 10 feet or less.

When charging at 16 amps the screen inside the car shows 231-232 volts steady.

Any suggestions? Any other info you guys need?

Thanks!!