Home wear goes dark line carefully buried "Ray"
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Encounter leakage like running water
Not long ago, there was a problem with the lines of Lao Zhang’s family who lived in an institution. Their monthly electricity bills are several times higher than those of other people, and their home appliances are not as large as others, and they usually pay great attention to saving electricity. When I arrived at his house, it was daylight. All the electrical appliances were shut, and the electricity meter kept turning. Cut off the zero line from his home and the meter is correct. There is no doubt that his home's line is seriously leaking electricity. Without the multimeter, I had to use the most stupid way, one line and one line to check, and checked the morning and finally found the electric wire that leaked electricity. This wire is buried under the floor tile. I asked Lao Zhang about the wiring at the time. He said that he was putting the wires into cement mortar. At that time, I thought this was a once-and-for-all approach. The most expensive copper wire was used. I did not expect it to be a problem in three years.
Such as the old Zhang home wiring method does not know how many home, their leakage potential from the wire into the cement mortar began. Because the cement mortar has a drying process, and the wire is solidified in it, it is pulled tightly, and it suffers from thermal expansion and contraction. The insulation of the copper wire is inevitably broken, resulting in leakage.
Lao Zhang said that it was okay to know that at the time, like other people, the wires were put into pipes and put into the ground. Lao Zhang is equally inaccurate. Put the wire into the tube, the surface seems to be the wire inside does not change with the thermal expansion and contraction of the floor, but the tube will be buried under the extrusion deformation, the tube will have joints, so sooner or later will still be out questionable.
The wall is dangerously charged
It's just a matter of leakage or minor problems. The wall is charged and it is dangerous.
Mr. Wang’s family encountered a problem with the wall being charged. On that day, Mr. Wang’s phone call was very urgent. Let me hurry over. He said that there is electricity on the walls of their homes. Feeling hemp hand. When I dropped the call, I rushed to it and tested it with an electric pen. The wall was charged. Looking at all the switchable connectors that can be viewed, everything is normal and no problems are found.
Where is the reason? After repeated inspections, it was found at a corner that the wall was wet. This is the reason why Mr. Wang’s house was built into the wall because the outer sewers fell off. The water flowed down the wall and soaked the walls. This was exactly where the wires were buried and the wires were broken. If it is not wetted with water, it can be used normally and it will leak when it rains.
Safety advice
For the sake of safety and maintenance, the bright line is increasingly favored by users, but people seem to have stereotyped the open lines directly on the wall and try to avoid it. This does not, and now invented the open wire slot, the line installed in the slot. This looks angular and beautiful, but there are still hidden dangers. We know that electric wires can generate heat during the transmission of electricity. Putting a large number of electric wires together, if the temperature is too high, it will inevitably cause the accelerated aging of the insulator and reduce the service life of the electric wires. If you bundle the wires of a high-power appliance together, it may cause a short circuit due to melting of the insulator, causing unimaginable consequences.
From the point of view of safety and maintenance, home decoration, using the open line is the best choice, first, the wire can be timely cooling, the second is to facilitate the inspection and maintenance, and the third is to save costs. As long as the wires are arranged properly, they will be neat and beautiful. Really want to use the dark line, must find a professional electrician master, can not easily put the wire buried in the wall. Nowadays, the decoration team has a mixed bag of dragons and quacks.