IEC 60228

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IEC 60228 is the International Electrotechnical Commission (IEC)'s international standard on conductors of insulated cables. As of 2023^[update] the current version is Third Edition 2004-11^[1] Among other things, it defines a set of standard wire cross-sectional areas:

In engineering applications, it is often most convenient to describe a wire in terms of its cross-section area, rather than its diameter, because the cross section is directly proportional to its strength and weight, and inversely proportional to its resistance. The cross-sectional area is also related to the maximum current that a metallic wire can carry safely.

This document is one considered fundamental in that it does not contain reference to any other standard.

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