An Electric Vehicle Supply Equipment, EVSE, (100) is disclosed where monitoring of a vehicle supply plug (108) state and a voltage applied on a power plug (115) takes place Depending on the voltage and depending on different states of the vehicle supply plug (108), a number of actions involving transmission of a notification takes place. This is advantageous in that, e.g., interruptions of charging due to poor electrical conditions or disconnections due to theft may be discovered.