AWG - labeling system thickness of the wires

In this system the minimal value is larger diameter. Such a diameter symbol historically: the wire is made by drawing and the number (gauge) is the number of consecutive pull-through holes in the waning portage until the desired diameter. So, for 24 AWG wire with a diameter 0,511 mm workpiece diameter over 0 AWG 8 mm stretched 24 times.

Conversion Table AWG to mm

10 AWG = 2,588 mm
11 AWG = 2,305 mm
12 AWG = 2,053 mm
13 AWG = 1,828 mm
14 AWG = 1,628 mm
15 AWG = 1,450 mm
16 AWG = 1,291 mm
17 AWG = 1,150 mm
18 AWG = 1,024 mm
19 AWG = 0,912 mm
20 AWG = 0,812 mm
21 AWG = 0,723 mm
22 AWG = 0,644 mm
23 AWG = 0,573 mm
24 AWG = 0,511 mm
25 AWG = 0,455 mm
26 AWG = 0,405 mm
27 AWG = 0,361 mm
28 AWG = 0,321 mm
29 AWG = 0,286 mm
30 AWG = 0,255 mm

Determine the value for AWG stranded conductors are not so simple. Many sources provide for the calculation of multi-core cables exactly the same formula as for a single-core, but this is not true, because in a stranded conductor have to count the total cross-sectional area at the sectional area of ​​each individual small veins, and the equivalent diameter — the diameter of the individual veins, laid on the principle of close packing. For example, to actually 7-wire cable conductor diameter is geometrically (in the package) is equal to three diameters lived for 19-core — 5 diameters, and for the intermediate diameter ratio is calculated through an intermediate factor.