According to the requirements of the electrical lightning protection and grounding set up, the building can use the joint grounding, joint grounding set up a total of grounding pole, each group of not less than 2-3, *** with the time is required in the electrical equipment at each level and equipotential equalization ring connected to the front end of each set of equipotential box, lightning is connected to the roof lightning belt and through the lightning lead and equalization ring to achieve.