Circuit aging is a problem that we need to pay special attention to in our daily lives. After the aging of wires, the insulation performance decreases, making it easy to cause short circuits. Especially in humid weather, although the appearance of the wire is intact, the insulation performance has decreased. When moisture penetrates into the metal conductor, a short circuit occurs and a fire occurs. So, what is wire aging? How to identify the degree of aging of wires? Next, Huaqiang Cable will take you to learn more.
Wires generally have insulation and protective layers to protect them from damage. Wire aging refers to the long-term exposure of the insulation and protective layer of a wire to light and temperature changes, resulting in the loss of insulation and protection functions due to factors such as thermal shock, corrosive gases, and electrical loads.
After the aging of electrical wiring, the insulation performance decreases and it is easy to cause short circuits, especially in dry, cold, and humid weather. Although the appearance of the wire is intact, the insulation performance has decreased. When moisture penetrates into the metal conductor, a short circuit occurs and a fire occurs.
In daily life, fires caused by aging wires and circuits are very common. This type of fire is not far away from us. Some units, enterprises, and old residential areas have installed wires that have been in disrepair for a long time, and most people do not pay attention to the hazards of aging circuits, so they have not developed a safety awareness of regular inspections and timely replacements. At present, the normal service life of household wires can reach 10-20 years. You may want to pay attention to how many years your home wires have been used. If it exceeds this limit, special attention needs to be paid.
How can we determine the degree of aging of a circuit?
The most direct method is to calculate the service life of the wire based on the date of manufacture indicated on the line, and determine whether it is aging. If the house you live in has not undergone new renovation and the wires used are still those used during construction or renovation, then the degree of wire aging can also be inferred from the time of occupancy. In addition, if there are loose connection points, loose threads, damaged insulation layers, detached insulation supports, or abnormal odors when the wire is powered on, it indicates that the wire may be aging. In addition, a voltmeter can be used to test the insulation ability of the wire. When the insulation ability of the wire drops to an unacceptable level, it can be determined that the wire is aging.