Why do some high-rise buildings not only have to be lightning protection belts, but also have to be several high lightning rods? Isn't lightning protection zone and lightning rod the same principle?

The protection range of lightning protection zone is limited, and the protection range of lightning rod is larger according to the radius of rolling ball. In addition, if there are other equipment on the roof, there will be lightning rod protection. General high-rise buildings (such as banks, hotels, office buildings, telecommunications, mobile, etc.) have a lot of electronic equipment. ), and usually use lightning rod and lightning protection belt joint protection, relatively safe.

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