Generally laid 3 to 5 vertical grounding pole. In areas with high soil resistivity, 3 to 5 radial horizontal grounding poles are laid.
In the area of equipment that needs to be grounded, set up a centralized grounding network, the grounding resistance to meet the design requirements. Then from this centralized grounding device leads to the grounding line and need to be connected to the grounding equipment. Centralized grounding device is generally used in a horizontal mesh, and set up a number of vertical grounding body in the horizontal network to help reduce the grounding resistance of the centralized grounding network.