How to determine the quality of wires and cables?

Answer:

It can be quickly identified from 5 dimensions:

1. Inspect the appearance: Check whether the sheath has a uniform and smooth color without bubbles, cracks, or damage; verify that the printing is clear and well-defined.

2. Inspect the wire core: If the copper core exhibits a bright purplish-red color, it indicates a flexible texture; if impure copper appears black and relatively hard, its quality is inferior.

3. Dimension measurement: Verify that the actual wire diameter and length comply with the specified specifications, and confirm there are no instances of cutting corners or shrinkage.

4. Bending Test: Repeated bending should not cause cracking of the outer sheath or fracture of the core wire, indicating compliance with toughness requirements.

5. Verification of qualifications: Whether formal test reports and production certifications are available, and whether compliance with national standard production requirements is ensured.