Technical Articles

What is IEC 60228?

IEC 60228, also known as the International Electrotechnical Commission Standard 60228, is a technical specification that establishes the conductors for electrical cables. It provides guidelines and requirements for the conductors' construction, dimensions, and material composition.

History and Development

The IEC 60228 standard was first introduced in 1972 by the International Electrotechnical Commission (IEC), an international standards organization for electrotechnology. Its purpose was to unify the specifications for conductors used in various types of electrical cables and improve consistency and safety across different industries.

Over the years, the standard has undergone several revisions to keep up with advancements in technology and industry needs. The most recent revision, published in 2004, incorporated updated requirements for the conductivity, mechanical strength, and insulation properties of conductors.

Key Requirements

IEC 60228 defines the key requirements for electrical conductors used in cables. These requirements include:

Conductor Material: The standard specifies various materials for conductors, such as copper, aluminum, or tinned copper. The choice of material depends on factors like conductivity, cost, weight, and resistance to environmental conditions.

Conductor Cross-Sectional Area: The standard provides a range of allowable sizes for the cross-sectional area of conductors. The size selection depends on the current-carrying capacity of the cable, voltage drop considerations, and application-specific requirements.

Stranding: IEC 60228 defines requirements for conductor stranding, which refers to the number and arrangement of individual wires within a conductor. The stranding affects cable flexibility, mechanical strength, and resistance to fatigue and thermal stress.

Resistance: The standard specifies maximum limits for the electrical resistance of conductors, ensuring efficient power transmission and minimizing energy loss in the cable.


The IEC 60228 standard is widely used in various industries that require reliable and high-performance cables. Some common applications include:

Power distribution networks

Telecommunication systems

Industrial automation and control systems

Railway and automotive sectors

Renewable energy installations

Compliance with the IEC 60228 standard ensures that cables meet strict quality and performance requirements, enhancing safety and reliability in electrical installations globally.



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