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However, AWG is dissimilar to IEC 60228, the metric wire-size standard used in most parts of the world, based directly on the wire cross-section area (in square millimetres, mm 2). The AWG tables are for a single, solid and round conductor. The AWG of a stranded wire is determined by the cross-sectional area of the equivalent solid conductor.
Comparison of SWG (red), AWG (blue) and IEC 60228 (black) wire gauge sizes from 0.03 to 200 mm² to scale on a 1 mm grid – in the SVG file, hover over a size to highlight it. 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 ...
IEC 60228, the metric wire-size standard used in most parts of the world. Circular mil, Electrical industry standard for wires larger than 4/0. American Wire Gauge (AWG), used primarily in the US and Canada; Standard Wire Gauge (SWG), the British imperial standard BS3737; Jewelry wire gauge; Body jewelry sizes
The first rubber-insulated cables for US building wiring were introduced in 1922 with US patent 1458803, Burley, Harry & Rooney, Henry, "Insulated electric wire", issued 1923-06-12, assigned to Boston Insulated Wire and Cable . These were two or more solid copper electrical wires with rubber insulation, plus woven cotton cloth over each ...
Toggle the table of contents. NEMA size. Add languages. Add links. ... NEMA size Max. continuous amperes Max. HP at 200 V, AC Max. HP at 230 V, AC
The AC resistance of a wire of length ℓ and resistivity is: () The final approximation above assumes D ≫ δ {\displaystyle D\gg \delta } . A convenient formula (attributed to F.E. Terman ) for the diameter D W of a wire of circular cross-section whose resistance will increase by 10% at frequency f is: [ 7 ] D W = 200 m m f / H z ...
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3 Wire size. 4 Conductor ampacity. 5 Isotropy. 6 See also. ... Toggle the table of contents. ... if two conductors are near each other carrying AC current, ...
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