1. How to deal with the electric wire leakage
1. First, we should find out what causes the electric wire leakage at home, and then make targeted rectification to solve it. If the wire is aging, it needs to be replaced with a new wire. If it is caused by poor electrical contact, it is necessary to re-insert or replace the wire box. If it is caused by the wrong connection between the zero line and the live wire, you need to find an electrician to replace the live wire connector. The leakage of wires in the home should be found out in time to eliminate the safety hazards of household electricity in time.
2. For short-circuit leakage, as long as the insulation of mains lines and related components is strengthened, the frequency of leakage can be avoided or reduced. However, due to the inherent high resistance and distributed capacitance in household appliances, it is usually impossible to completely eliminate high resistance leakage and capacitive leakage. Therefore, an indirect method is generally adopted to connect the metal shell of household appliances to the earth, so as to discharge the leakage current. If short-circuit leakage occurs after the shell is grounded, and the current into the earth is very large, the fuse of household appliances power supply can be blown, thus playing a protective role. But the grounding must be good, and the leakage current should be smooth, otherwise the protection function will be lost. In addition, special attention should be paid to the fact that gas pipes, lightning rod conductors and telephone grounding wires that are easy to cause explosion cannot be used as grounding bodies, otherwise it will bring more trouble.
3. After the leakage of the buried conductor occurs, it is not recommended that you exchange the leakage conductor with the ground wire and continue to use it, which will leave a great safety hazard; It is recommended that you replace the wire to deal with it; The specific steps to replace the wires are: use tools to pull out the leaking wires, if it is really not feasible, pull out all the wires in this section, then thread the tape wires, re-thread the new wires, and finally handle the connectors of the wires.
second, the skills of circuit selection
1. Look at the packaging and wire skin. The wires of the national standard are often made well and neatly, and they have a sense of quality when held by hand. It's time to open the package and look at the wires inside. According to the national standard, the wire thickness (insulation thickness) is .7mm, and if it is too thick, it is not the standard. You can pull the line skin hard, but what is not easy to tear is generally the national standard. In addition, it can be burned with fire, and those that go out within 5s after leaving are national standard lines with certain flame retardant function.
2. Look at the inner core. The higher the brightness of the material (copper) of the inner core, the better the copper is, and the brightness is even, shiny and without layering. The national standard requires that the inner core must use oxygen-free copper. Non-standard items such as black rod copper may have hidden dangers of accidents. The thickness of the inner core has certain requirements in the country, but it is not very strict. But it won't be a lot wrong, just a little bit, which is generally invisible to the eye.
3, copper quality. Real copper is a red color, while brass is yellow. In addition, copper is soft and brass is hard. As long as you don't buy copper-clad aluminum (aluminum material, but coated with a layer of copper, which is generally used in flexible cables), brass is not too fake at present.
4. Check the product certificate. The cable product certificate will clearly print CCC certification mark, trademark, model specification, rated voltage, length, inspection, manufacturing date, implementation standard, factory name, address, telephone number and other marks, which are in line with the products. These will be the products produced by regular manufacturers, and everyone should read them clearly when purchasing.