2, general equipment lightning protection grounding, grounding resistance requirements less than 4 ohms. Lightning protection and grounding generally require 40×4 mm flat iron, and grounding resistance and grounding conditions need to be checked before thunderstorm season every year. Grounding can be done alone or together with the grounding body of the building. Grounding requires that each junction box should be separately led to the grounding body to protect the grounding resistance of the ground wire. When the grounding body is set separately, it should not be greater than 2 ohms.

3, lightning protection grounding is divided into two concepts, one is lightning protection to prevent lightning damage; The second is electrostatic grounding to prevent electrostatic hazards.