The answer to 'why is my EV charger sparking' is that a sparking EV charger is a serious safety issue that requires immediate attention. This could be caused by a problem with the electrical connection, damaged wiring, or a faulty charger. Sparking poses a fire risk and should never be ignored.
If your EV charger is sparking, stop using it immediately and unplug it from the power source. Do not attempt to inspect or repair the charger yourself, as this can be dangerous. Instead, contact a licensed and experienced electrician to diagnose and fix the problem as soon as possible.