After conducting tests at the Sollatek house, where the same problem occurred, it was determined that the EV charger was getting damaged due to excessive repeated over voltage. The consistent incoming high voltage fluctuated between 243 V and 253 V which is the above optimal range required for appliances in the UK. This excessive voltage led to overheating and failure of the PEN fault device, which detects overvoltage and cuts off all conductors, including live, neutral, and earth, to prevent electrical shocks In this case, the EV charger in use had a capacity of 22 kW with a 7.6 W output. To resolve this issue, Sollatek installed the AVR-L, a three-phase automatic voltage regulator with an advanced display module and WiFi connectivity(optional).