The answer to 'why is my EV charger sparking' is that there could be several possible causes, including a loose connection, damage to the charger or wiring, or a problem with the electrical system. Sparking is a sign of an electrical issue that needs to be addressed immediately for safety reasons.
Some common causes of an EV charger sparking include a loose plug connection, damaged charging cable, water or moisture getting into the charging port, a problem with the electrical outlet or wiring, or a fault in the EV's charging system. Sparking can also be caused by a short circuit or ground fault in the electrical system.