What does 48A mean?

Hello I just took delivery of my model 3. What does the 48A mean in the charging section of the app? Do I need to change that when I charge my car at different spot?

Thank you!

Hello I just took delivery of my model 3. What does the 48A mean in the charging section of the app? Do I need to change that when I charge my car at different spot?

Thank you!