Here is an article discuss on Electrical Wiring Standard and Code as used to provide power in buildings and structures, commonly referred to as building wiring.
The international standard wire sizes are given in the IEC 60228 standard of the International Electrotechnical Commission. This document and its precursors were created due to a need for a standard definition of cable conductor size. However, this standard is not written in such language that it can readily be adapted as a national wiring code.
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