Submitted by crazy canaler on Tue, 2020-06-30 21:14
I bought my Dec. 2018 standard range S about 14 months ago and proceeded to charge on average about 100 miles per day on the charge cord and adapter that came with the car. For 8 months, I didn't have any problem charging it on the Nema 14-50 outlet that I had professionally installed. It consistently charged about 23 to 24 miles until it all of a sudden started giving overheating errors and reduced the charge rate to around 8 to 11 miles per hour. Tesla replaced it, and the same thing happened with the new charge cord and adapter. They replaced it again. This third cord does the same thing with the exception that it will eventually go back up to 23 miles per hour before again dropping back down to about 11 miles per hour.
Is this normal? I don't think the outlet is bad. I have time-of-use billing, and the slower charging speed can sometimes cause it to still be charging when the peak rate starts.