The answer to 'why is my EV charger tripping breaker' is that there are several common causes, including an overloaded circuit, a faulty charger, or a problem with the electrical wiring. The most likely culprit is an overloaded circuit - the EV charger may be drawing more power than the circuit can handle, causing the breaker to trip as a safety measure.
Other possible issues include a faulty or damaged EV charger, loose connections in the wiring, or a problem with the home's electrical system. If the breaker continues to trip, it's important to diagnose and address the underlying cause to avoid potential fire hazards or damage to the EV or home's electrical system.