零线断线引起的家用电器烧毁的事故分析一天，我厂外线班连续接到宿舍居民用户的电话，反映１号楼照明电压太低，灯泡不亮；而４号楼电压太高，烧坏灯泡。维修人员赶到现场后．用万用表测１号楼进户线电压只有４０Ｖ，测４号楼进户线电压竟高达３４０Ｖ。到变压器台检查时... Zero line breakage caused by household appliances burned accident analysis One day, I plant outside the class continued to receive dormitory user’s phone, reflecting the lighting voltage of Building 1 is too low, the bulb is not bright; and Building 4 voltage is too high, burn out light bulb. Maintenance staff rushed to the scene. With a multimeter to measure Line 1 into the line voltage is only 40V, measured Line 4 into the line voltage as high as 340V. To the transformer station inspection ...