The answer to 'EV charger making buzzing noise' is that a buzzing or humming sound from an EV charger is often caused by electrical issues. This can be due to a problem with the charger itself, the electrical wiring, or even the car's charging port.
Some common causes include a loose connection, faulty components, or interference from other electrical devices. The buzzing may be accompanied by flickering lights or a reduced charging speed. In most cases, the buzzing is not a serious issue, but it's important to address it to prevent further damage or safety concerns.