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  2. American wire gauge - Wikipedia

    en.wikipedia.org/wiki/American_wire_gauge

    Ampacity at temperature rating [a] Fusing current [9] [10] 60 °C ... where 1 kcmil = 0.5067 mm 2. The next wire size thicker than 4/0 has a cross section of 250 ...

  3. IEC 60228 - Wikipedia

    en.wikipedia.org/wiki/IEC_60228

    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 ...

  4. USB hardware - Wikipedia

    en.wikipedia.org/wiki/USB_hardware

    The USB 2.0 specification requires that cable delay be less than 5.2 ns/m (1.6 ns/ft, 192 000 km/s), which is close to the maximum achievable transmission speed for standard copper wire. The USB 3.0 standard does not directly specify a maximum cable length, requiring only that all cables meet an electrical specification: for copper cabling with ...

  5. USB - Wikipedia

    en.wikipedia.org/wiki/USB

    USB 3.0 and later specifications define one dedicated pair for USB 2.0 compatibility and two or four pairs for data transfer: two data wire pairs realising full-duplex (FDx) for single lane (×1) variants require at least SuperSpeed (SS) connectors; four pairs realising full-duplex for two lane (×2) variants require USB-C connectors.

  6. Standard wire gauge - Wikipedia

    en.wikipedia.org/wiki/Standard_wire_gauge

    A standard wire gauge. The British Standard Wire Gauge, often referred to as the Standard Wire Gauge or simply SWG, is a unit used to denote wire gauge (size) as defined by BS 3737:1964, a standard that has since been withdrawn. It is also known as the Imperial Wire Gauge or British Standard Gauge. Although its use has significantly declined ...

  7. USB-C - Wikipedia

    en.wikipedia.org/wiki/USB-C

    Cable length should be 2.0 m or less for Gen 1 and 1.0 m or less for Gen 2. Thunderbolt Type-C to Type-C active cable Thunderbolt 3 (40 Gbit/s) Alternate Mode with cables longer than 0.8 m requires active Type-C cables that are certified and electronically marked for high-speed Thunderbolt 3 transmission, similarly to high-power 5 A cables.