For example, you should consider the external lightning protection solution and the design and construction of grounding from the beginning of building construction, and then you should consider the lightning protection of the power supply system of the building as a whole. Generally, we recommend three-level lightning protection. After the power supply is completed, you should also consider the lightning protection of the signal. R45 and RJ 1 1 integrated switch lightning arresters are mainly used for signal lightning protection.
In fact, the whole scheme ultimately has a great relationship with the quality of grounding, so grounding is the most important.