Yichengwanjia Water Heating Hardware Building Materials
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验电笔的使用注意事项有验电笔不能受潮，不能随意拆装或受到严重振动。应经常在带电体上试测，以检查是否完好。不可靠的验电笔不准使用。检查时如果氖管内的金属丝单根发光，则是直流电；如果是两根都发光则是交流电。
东西很全，日用五金基本都有。插线板插孔内部有两个铜片，在经常插拔过程当中，铜片弹性会变弱，容易引起插线板的虚接或者接触不良现象，也就是插不紧的现象，这样容易引起电弧或者电火花。为了安全起见插线板用的时间久了就要及时更换，否则容易出事
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