May I ask about the inspection of wires and cables? What exam does it refer to? Mark?

The detection of wires and cables usually involves multiple indicators, which are aimed at ensuring the quality, safety and compliance with the specified standards of wires and cables. The following are some common indicators that can be used for wire and cable inspection:

1.** conductor resistance: * * check whether the conductor meets the specified resistance requirements to ensure the effectiveness of current transmission.

2.** Insulation resistance: * * Measure the resistance of insulation materials to ensure that wires and cables can maintain sufficient insulation performance under normal use conditions to avoid electrical failure.

3.** Visual inspection: * * includes visual inspection of wires and cables to confirm whether there are any damages, cracks, wear or other defects.

4.** Electrical performance: * * Including voltage, current capacity, power factor and other tests to ensure the performance of wires and cables under the specified electrical load.

5.** Heat resistance: * * Test the performance of wires and cables at high temperature to ensure their reliability in different temperature environments.

6.** Moisture-proof: * * Test the performance of wires and cables in wet conditions to ensure their stable operation in wet environment.

7.** Flame retardancy: * * Test the flame retardancy of wires and cables to ensure that it will not aggravate the fire in case of fire and improve safety.

8.** Dimensions: * * Ensure that the dimensions of wires and cables meet the manufacturing standards to ensure correct installation and connection.

9.** Chemical properties: * * includes the chemical stability of cable material to ensure its stability in various environments.

10.** Compliance with standards: * * Ensure that wires and cables meet national or international standards, such as IEC (International Electrotechnical Commission) or other relevant standards.

The above are some common indicators that can be used for wire and cable inspection. The actual inspection contents and standards may vary according to regions, industries and specific uses.