Do distribution boxes need lightning protection
However, according to the national standard GB50057 lightning protection standard division, the outdoor distribution box belongs to the LPZO area and enters the LPZ1 area, and should be equipped with a first-level lightning protection device for the T1 test. It can be seen that it is very necessary to install a surge protective device in the distribution box. In North America, distribution systems are often of the 4-wire configuration with three phase conductors and one neutral.
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