We all know that when cables used in homes or businesses age, it can be dangerous if businesses continue to use them. So we need to check whether the wires are aging, but how to check whether the wires are aging requires a certain amount of technology. 
The main line is insulated by the outer sheath. Over time, it is corroded by corrosive gases, and the insulation performance gradually decreases. It slowly ages and hardens, becomes brittle or falls off, and the insulation does not work. In fact, the direct cause of aging failure of wires and cables is the degradation and breakdown of insulation. The editor of Zhongce Wire and Cable teaches you how to judge whether the wire is aging, check it in time, and eliminate hidden dangers.
1. Check the appearance along the wires and see black and hard cracks. Insulated wires bent from hands, stiff and cracked skin scattered everywhere. "This refers to observing the insulation layer along the wire. If you find that the insulation layer has lost its luster, darkened, hardened, cracked, and partially fallen off.
When bending insulated wires with both hands, the wires are stiff, or the insulation layer is cracked or insulated. Layer peeling off, etc., which shows that the wire technology has begun to show different degrees of aging and serious impact on aging.
2. Accurate insulation measurement method, the low point between the two may be small in rainy days. Less than half. It refers to a more accurate judgment of the insulation condition of the line. The insulation resistance meter can be used to measure the insulation of wires.
The insulation allowable value of different lines is different. For example, the insulation resistance of a household 220V line cannot be less than 0.22. Megohm; the humidity value in rainy days cannot be less than 0.1 Megohm; if the measured insulation resistance value is less than the above value, it indicates that there is a problem with the insulation of the electrical circuit. Of course, the lifespan of cable TV is different under different uses. Just ask you to handle this situation
