Titanium48
Well-known member
Since an EVSE is considered a continuous load, electrical code compliance limits it to 80% of the nominal rating of the branch circuit it is connected to. The definition of "continuous" appears to be three hours or more, so it should be acceptable to build an EVSE that will feed the car 100% of the nominal branch circuit rating if it automatically shuts down after three hours. An EVSE with such a "boost mode" could be useful for EV owners whose charging capabilities are limited by wiring that is cost-prohibitive to upgrade. For example, an EVSE for a 20 A circuit could have a normal mode where it would limit current to 16 A, and a boost mode where it would supply 20 A but automatically shut down after 3 hours. Normal mode would be used for usual overnight charging, while boost mode would be useful to get as much charge as possible in a short time, such as if you want to go out in the evening after the drive home from work has drained the battery.
Has this ever been implemented?
Has this ever been implemented?