Wires and cables are wire material products used to transmit electromagnetic energy, information and realize electromagnetic energy conversion, and have certain applications in many fields. When buying wires and cables, we can use some tricks to cleverly distinguish the pros and cons of wires and cables. Today, I will introduce the method of distinguishing wires and cables in detail, hoping to help users better apply products.

1. Look closely at the label printing, the handwriting is blurred and the address is unknown. It means to look at the printed words on the label and the insulating skin. If there are typos, or the printing is of different shades, or the words are blurred, attention should be paid.

2. Twist the insulation skin by hand, the color will fade and the characters will be of poor quality. It refers to rubbing the insulation skin with fingers. Some low-quality insulated wires are easy to fade, especially the red wire. This problem occurs. After rubbing, the color of the thread is left on the finger or the words printed on the thread are erased. Generally inferior quality line.

3. Use your fingernails to draw and pinch the line, so that the line will be cut off and the skin will fall off. Refers to the use of nails to scratch and pinch the insulating skin. The ones that can be scratched or pinched are generally inferior threads.

4. Repeatedly bend the insulated wire and break it three to four times. It refers to the repeated bending of insulated wires. The insulation layer of inferior wires is generally of poor material. After bending 3 to 4 times, the insulation layer will break.

5. Use fire to ignite the wire insulation and spontaneously ignite away from the open flame. It means to ignite the insulating layer and spontaneously ignite after leaving the open flame.

6. The wire core is usually aluminum and copper, the color becomes darker and lighter. It means to look at the color of the wire core, the color of inferior wires is dark and without metallic luster.

7. Measure the inner diameter and outer diameter carefully, and look at Pisone when weighing. It means that if it is not determined by the above 6 methods, the outer diameter and core diameter of the insulated wire can also be measured. The allowable error is ±10%. If the measured value exceeds the allowable error, it is basically a low-quality insulated wire.