How to connect the ground wire of charging pile

If it is a villa or a village in the city, users usually live alone in a building with a relatively independent power supply system. In a new villa or village in the city, there will be a row of floors in the incoming distribution box of each household, which can be directly led to the charging pile from here. If you are a user in a high-rise residential area, the parking spaces are generally in the underground parking lot, which is far away from each household's independent electricity meter, so it is unrealistic to connect the household's own distribution box, so consider the following possible ways to connect electricity: 1, property access. Generally speaking, considering the power capacity and fire protection, the owner of the property will be reasonably equipped with a power connection location nearby, and the user only needs to connect electricity from the lower end of the property distribution cabinet. Usually, this power supply connection location is located in the power distribution cabinet near the charging parking space, and there is usually a grounding bar or grounding point for connection. 2. The power supply bureau takes electricity. Car owners apply for installation, and generally there is no meter for grounding wire connection. Generally, there are many available ground wires in underground parking lots, so it is more convenient to choose nearby ground wires first than to make their own. Common ground wires include bridge, fire cabinet and so on. In an electrical system or electronic equipment, it is connected to the earth, a shell or a conductor with zero reference potential. In general electrical appliances, the ground wire is connected to the shell to prevent electric shock accidents caused by insulation damage inside the shell. Charging pile belongs to electrical equipment, and grounding is essential. Of course, there are still some charging piles of individual manufacturers, which shield the grounding detection in the charging pile for surface compatibility charging, and even some car owners agree to shield the grounding detection for blind charging, so there must be potential safety hazards of electric shock.