[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

家用总配电箱选防雷器应看通流容量(Imax),单相进线选20kA/相以上,三相或农村/顶楼/雷区选40kA/相以上,配合Up残压≤1.5kV才能有效保护后端设备

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