Ground-fault protection of electrical equipment is required by the National Electrical Code (NEC) in order to minimize the damage to the equipment in the case of a ground fault.
Let's examine how electric vehicles are charged and what NEC 625 requires for the charging stations, and at what the owners need to know to install and maintain these systems safely.
In 1996, a new Article 625, Electric Vehicle Charging System Equipment, was added to the NEC in anticipation of electrically charged vehicles.