What are the standards for wire harness wire diameter? What are the specific standards?

Wire harness wire diameter standards are standards that define the range of diameters of the wires used in a wire harness. The choice of wire diameter is critical to the electrical performance and reliability of the harness, so there are a number of international and industry standards that define the range of wire diameters. The following are some common harness wire diameter standards: American Wire Gauge (AWG): AWG is a common wire diameter standard used to measure the thickness of wires. It categorizes wire diameter into different sizes, with smaller numbers indicating thicker wires.AWG standards are applicable in North America and some international markets. Common harness wire gauge sizes include AWG20, AWG18, AWG16, etc. European wire diameter standard (mm²): European wire diameter standard to the cross-sectional area of the wire to indicate the size of the wire diameter, the unit is square millimeter (mm²). This wire diameter standard is adopted in Europe. Common harness wire diameter specifications include 0.5mm², 0.75mm², 1.0mm², and so on. Japanese Instrument Standards (JIS): The Japanese Instrument Standards (JIS) are similar to the U.S. Wire Gauge Standards, which indicate the thickness of the wire by a number, with the smaller number indicating the thicker the wire.The JIS standards are applicable to the Japanese market. Common harness wire diameter specifications include JIS0.5, JIS0.75, JIS1.0 and so on. International Electrotechnical Commission Standards (IEC): The IEC has developed a number of standards to guide the design and manufacture of wire harnesses in the electrical industry. Among them, IEC 60228 is a standard for cross-sectional area of wires, which specifies the range of wire diameters and symbolic representation. Industry standards: Different industries may have standards for wire harness wire diameters for specific applications. For example, the automotive industry often uses automotive wiring harness standards (e.g., ISO 6722), which specify a range of wire diameters and requirements for wires to suit the needs of automotive electrical systems. In practice, the selection of wire harness wire diameter requires consideration of a number of factors, including current load, electrical characteristics, environmental conditions, size of the harness and installation requirements. Too small a wire diameter may lead to overheating and increased resistance, while too large a wire diameter will increase cost and take up space. Therefore, when designing and manufacturing wire harnesses, application requirements need to be carefully evaluated and applicable wire diameter standards referenced to ensure performance and reliability.

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