AWG CopperWire Size and Data Table Chart @ 100 Degrees FAWG Copper Wire Table Size and Data Chart @ 100 Degrees FThe American Wire Gauge (AWG) measurement system was designed with a purpose: for every three steps in the gauge scale, wire area (and weight per unit length) approximately doubles. This is a handy rule to remember when making rough wire size estimations!For very large wire sizes (fatter than 4/0), the wire gauge system is typically abandoned for cross-sectional area measurement in thousands of circular mils (MCM), borrowing the old Roman numeral 'M' to denote a multiple of 'thousand' in front of 'CM' for 'circular mils.' The following table of wire sizes does not show any sizes bigger than 4/0 gauge, because solid copper wire becomes impractical to handle at those sizes.
American wire gauge (AWG), also known as the Brown & Sharpe wire gauge, is a logarithmic stepped standardized wire gauge system used since 1857, predominantly in North America, for the diameters of round, solid, nonferrous, electrically conducting wire. Dimensions of the wires are given in. A general rule of thumb would be to make your hole diameter (after plating) approximately 10% larger than the diameter of your wire. However, this will often lead to very small diameter differences. For example, 18AWG 16/30 stranded wire has a diameter of 0.046 inches (1.17mm).