After a Gen3 wall charger install I was curious on temps so I took some FLIR pics. They are quite interesting to look at. Makes you appreciate what is going on that your eyes can not pick up.
Setup
100A subpanel in garage
60A breaker to wall charger
#6 romex of about 20 feet dedicated branch circuit
Gen3 Wall charger
Model S Plaid
Results
The wall charger was initially set to 48A for about an hour but dialed back to 44A in Model S location settings due to breaker temps being warm and realizing code really wants you to be at 20% of the rating for constant loads and #6 romex gets a hit at being rated 55A. Being right at the 48A limit made things feel warmer than maybe they should be. Needs more testing to see if setting the location limit to 44A made a difference. Until then will likely set the wall charger to 40A. It is not going to be that much of a noticeable addition of time for charging for my situation.
Setup
100A subpanel in garage
60A breaker to wall charger
#6 romex of about 20 feet dedicated branch circuit
Gen3 Wall charger
Model S Plaid
Results
The wall charger was initially set to 48A for about an hour but dialed back to 44A in Model S location settings due to breaker temps being warm and realizing code really wants you to be at 20% of the rating for constant loads and #6 romex gets a hit at being rated 55A. Being right at the 48A limit made things feel warmer than maybe they should be. Needs more testing to see if setting the location limit to 44A made a difference. Until then will likely set the wall charger to 40A. It is not going to be that much of a noticeable addition of time for charging for my situation.
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