: It dictates the minimum number of wires and maximum strand diameters for specific classes. Temperature Correction
Several national standards are based on or directly equivalent to IEC 60228:
You can purchase and download the official, authorized version directly from the IEC Webstore or through authorized national standards bodies. IEC Webstore
: You can purchase the most recent edition, IEC 60228:2023 , directly from the International Electrotechnical Commission . iec 60228 pdf free download
Formed by twisting multiple wires together, class 2 conductors are more flexible than class 1 while still intended for fixed installations where some bending may be needed during installation. They are widely used in power distribution cables.
The core metric of IEC 60228 is its comprehensive tables detailing the maximum permissible DC resistance (ohms per kilometer) at 20°C.
In the world of electrical engineering and cabling, precision is paramount. The safety, efficiency, and longevity of an electrical installation depend heavily on the quality of the conductors used. This is where (International Electrotechnical Commission standard 60228) becomes the global benchmark. It is the definitive standard for conductors of insulated cables , specifying the nominal cross-sectional areas, construction requirements, and maximum electrical resistance. : It dictates the minimum number of wires
: Many free PDFs online are scanned copies of older versions (such as the 1978 or 2004 editions). The standard receives active updates (with a major revision published in recent years). Formatting Errors
Designed for applications requiring frequent movement or bending.
The standard applies to a wide range of insulated cables designed for fixed installations and flexible applications. However, it specifically excludes conductors for telecommunication cables. Key Purposes of the Standard: Formed by twisting multiple wires together, class 2
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The most legally sound approach is to purchase the standard from the , where the most up-to-date version is available for a fee of CHF 160 (approximately 180 USD). Authorized national standards bodies, such as ANSI in the US or DIN in Germany, also offer legal copies.
For further research into specific classes (Class 1, 2, 5, or 6), technical datasheets from reputable manufacturers often serve as an excellent summary of these requirements. If information on a different standard—such as IEC 60332 regarding flame retardancy—is required, similar professional acquisition methods are recommended.