| Nominal Cross-Section (mm²) | Max. DC Resistance (Class 1/2 – Ω/km) | Max. DC Resistance (Class 5/6 – Ω/km) | | :--- | :--- | :--- | | 1.5 | 12.1 | 13.3 | | 2.5 | 7.41 | 7.98 | | 4 | 4.61 | 4.95 | | 6 | 3.08 | 3.30 | | 10 | 1.83 | 1.91 | | 16 | 1.15 | 1.21 | | 25 | 0.727 | 0.780 | | 35 | 0.524 | 0.554 | | 50 | 0.387 | 0.386 | | 70 | 0.268 | 0.272 | | 95 | 0.193 | 0.206 | | 120 | 0.153 | 0.161 | | 150 | 0.124 | 0.129 | | 185 | 0.0991 | 0.106 | | 240 | 0.0754 | 0.0801 |
Note: For aluminum conductors, multiply resistance values by approximately 1.6.
IEC 60228 is an international standard that classifies conductors based on their material (copper, aluminum, or aluminum alloy) and their flexibility (Class 1, Class 2, Class 5, and Class 6). Before this standard, different countries used varying measurement systems (e.g., AWG in the US, SWG in the UK), leading to confusion and incompatibility. iec 60228 pdf free download
The standard moved the industry toward a metric-based system based on the nominal cross-sectional area (mm²) rather than wire gauge numbers. Common sizes range from 0.5 mm² up to 2500 mm².
If you cannot afford the pure IEC document, look for the EN (European Norm) version or the BS (British Standard) version. Many countries adopt the IEC standard word-for-word and sell it at a lower local price. For example: | Nominal Cross-Section (mm²) | Max
These are identical in technical content but are often priced for local markets and may be available through lower-cost national subscriptions.
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 IEC 60228 (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. These are identical in technical content but are
If you have searched for the term "iec 60228 pdf free download" , you are likely an electrical engineer, a procurement specialist, a student, or a technician trying to access this crucial document without cost. This article will explain what IEC 60228 contains, why it is vital, the legal and practical realities of obtaining it as a free PDF, and safe alternatives to access the information you need.
