Not long ago, a friend said his home circuit in question, so have a look what the reason, the result after the electric pen measured and found to be neutral with electricity, we know that under normal circumstances, the zero line is not electrified, and that friend electric home in the end, where is the problem?
Usually zero conductor main reasons are as follows:
1, the house on the grid, some people because in order to protect the electrical and grounding, resulting in a zero conductor;
2, the three-phase load is not balanced, resulting in a zero potential line unstable, with a voltage;
3, will take a live wire connected together.
Analyzed the situation of a friend's house, generally speaking, zero conductor is basically a poorly grounded, more common because of the zero line or cut off contact is not good, there are some other reasons usually more rare, clawed socket friend's house after confirmed, a friend's house circuit problem is caused because the zero line break.
And how can we solve the problem of zero conductor do? In fact, it is not difficult.
1, is based on the zero line, expand and enhance the effect of inspection and connection of the cable,
2, all the wires of the line of fire from the zero line are through, the area of the zero line must be large enough, may be connected to a main switch box from the zero line in the past.
3, the wire breaking due to external force excluded.
4, if the zero line occurs when the flash lights, should check the quality of the base is not a short-circuit at the light switch and; the case if all the zero line on the charged portions are present, check the master switch zero line.
Based on the above points, regardless of the zero line and charged because of what caused the electricity will lead to unsafe, so we need to pay close attention, if not handled well bring life unimaginable harm, so when installing wiring, be sure to buy good quality guaranteed regular wire, and secondly to find good technical electrician responsible, must not be careless when wiring, must pay attention to the details, after all, a major responsibility for security, so that safe use of electricity.
Reproduced in: https: //www.jianshu.com/p/d6f2c9d4750b