近年来的房屋建筑,一般采取三相电源进户(楼),并在进户处做中性线重复接地。本文则是在此基础上谈谈如何利用万用电表测试住户室内电源插座的接地保护可靠性。在房屋竣工后,一般仅在进户接地点以接地摇表测试整个保护接地系统的接地电 In recent years, the house construction has generally taken three-phase power into the household (building), and repeated grounding at the entrance to the neutral line. This article is based on this discussion about how to use a utility meter to test the reliability of the grounding protection of the indoor power outlet of the household. After the house is completed, the grounding power of the entire protective grounding system is generally tested only at the grounding point of the incoming house using a grounding rocker.