What are the methods to identify wires and cables?

March 07, 2023

1. look at the label printing samples, the address is unknown. Refers to the label on the label and the insulating cover. If there is a typo or a different shade of printing or the words are blurred, you must pay attention to it.

2. Insulate the skin with a hand, fade, drop the word quality. Refers to rubbing the insulation sheath with your fingers. Some poorly insulated wire sheaths are easy to discolor. This is especially true with red lines. After the rubbing, the skin color on the fingers or the word printed on the skin is rubbed off. It is generally a poor quality line.

3, then use nails, squatting line, draw down, off the skin in general. It refers to the use of fingernails and enamels to insulate the skin. It is generally a poor quality line that can be drawn down and smashed down.

4. Repeatedly bend the insulated wire and break it three to four times. Refers to repeatedly bending insulated wires, poor quality of the general poor insulation material, bending 3 to 4 times after the insulation layer will break.

5. Insulate with the fire ignition wire and leave the open flame fire spontaneously. It refers to the ignition of the insulating layer, and it is the inferior line that can spontaneously ignite after leaving the open flame.

6, the core is commonly used in aluminum and copper, the color is dark and light. Refers to the color of the core. The color of the inferior line is dark and has no metallic luster.

7. Measure the inside diameter and outside diameter, and look at the weight to see the leather. It means that if the above six methods cannot be determined, the outer diameter and the 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 an inferior insulated wire.

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