A wire gauge size chart, also known as a wire gauge table or wire gauge chart, it is a reference table chart that specifies the diameter, area and thickness of electrical wires. It represents wire sizes in both the American Wire Gauge (AWG) system and the metric system (millimeters or square millimeters).
Some of the key points you need to understand when reading a wire gauge size chart:
- AWG Gauge Numbers: American Wire Gauge is a standardized wire gauge system used in the United States to note the diameter of electrically conducting wire. In the AWG system, lower gauge numbers represent thicker wires.
- Cross-Sectional Area: The chart includes the cross-sectional area of the wire in square millimeters (mm²).
- Diameter: A mil is a unit of length equal to 0.001 inch.
- Current Ratings: Some charts include recommended current-carrying capacities for different wire sizes based on specific conditions.
| AWG | Diameter (inches) | Diameter (mm) | Area (mm2) | Resistance (Ohms / 1000 ft) | Resistance (Ohms / km) | Max Current (Amperes) | Max Frequency (for 100% skin depth) |
| 0000 | 0.46 | 11.684 | 107 | 0.049 | 0.16072 | 302 | 125 Hz |
| 000 | 0.4096 | 10.40384 | 85 | 0.0618 | 0.202704 | 239 | 160 Hz |
| 000 | 0.3648 | 9.26592 | 67.4 | 0.0779 | 0.255512 | 190 | 200 Hz |
| 0 | 0.3249 | 8.25246 | 53.5 | 0.0983 | 0.322424 | 150 | 250 Hz |
| 1 | 0.2893 | 7.34822 | 42.4 | 0.1239 | 0.406392 | 119 | 325 Hz |
| 2 | 0.2576 | 6.54304 | 33.6 | 0.1563 | 0.512664 | 94 | 410 Hz |
| 3 | 0.2294 | 5.82676 | 26.7 | 0.197 | 0.64616 | 75 | 500 Hz |
| 4 | 0.2043 | 5.18922 | 21.2 | 0.2485 | 0.81508 | 60 | 650 Hz |
| 5 | 0.1819 | 4.62026 | 16.8 | 0.3133 | 1.027624 | 47 | 810 Hz |
| 6 | 0.162 | 4.1148 | 13.3 | 0.3951 | 1.295928 | 37 | 1100 Hz |
| 7 | 0.1443 | 3.66522 | 10.5 | 0.4982 | 1.634096 | 30 | 1300 Hz |
| 8 | 0.1285 | 3.2639 | 8.37 | 0.6282 | 2.060496 | 24 | 1650 Hz |
| 9 | 0.1144 | 2.90576 | 6.63 | 0.7921 | 2.598088 | 19 | 2050 Hz |
| 10 | 0.1019 | 2.58826 | 5.26 | 0.9989 | 3.276392 | 15 | 2600 Hz |
| 11 | 0.0907 | 2.30378 | 4.17 | 1.26 | 4.1328 | 12 | 3200 Hz |
| 12 | 0.0808 | 2.05232 | 3.31 | 1.588 | 5.20864 | 9.3 | 4150 Hz |
| 13 | 0.072 | 1.8288 | 2.62 | 2.003 | 6.56984 | 7.4 | 5300 Hz |
| 14 | 0.0641 | 1.62814 | 2.08 | 2.525 | 8.282 | 5.9 | 6700 Hz |
| 15 | 0.0571 | 1.45034 | 1.65 | 3.184 | 10.44352 | 4.7 | 8250 Hz |
| 16 | 0.0508 | 1.29032 | 1.31 | 4.016 | 13.17248 | 3.7 | 11 kHz |
| 17 | 0.0453 | 1.15062 | 1.04 | 5.064 | 16.60992 | 2.9 | 13 kHz |
| 18 | 0.0403 | 1.02362 | 0.823 | 6.385 | 20.9428 | 2.3 | 17 kHz |
| 19 | 0.0359 | 0.91186 | 0.653 | 8.051 | 26.40728 | 1.8 | 21 kHz |
| 20 | 0.032 | 0.8128 | 0.518 | 10.15 | 33.292 | 1.5 | 27 kHz |
| 21 | 0.0285 | 0.7239 | 0.41 | 12.8 | 41.984 | 1.2 | 33 kHz |
| 22 | 0.0254 | 0.64516 | 0.326 | 16.14 | 52.9392 | 0.92 | 42 kHz |
| 23 | 0.0226 | 0.57404 | 0.258 | 20.36 | 66.7808 | 0.729 | 53 kHz |
| 24 | 0.0201 | 0.51054 | 0.205 | 25.67 | 84.1976 | 0.577 | 68 kHz |
| 25 | 0.0179 | 0.45466 | 0.162 | 32.37 | 106.1736 | 0.457 | 85 kHz |
| 26 | 0.0159 | 0.40386 | 0.129 | 40.81 | 133.8568 | 0.361 | 107 kHz |
| 27 | 0.0142 | 0.36068 | 0.102 | 51.47 | 168.8216 | 0.288 | 130 kHz |
| 28 | 0.0126 | 0.32004 | 0.081 | 64.9 | 212.872 | 0.226 | 170 kHz |
| 29 | 0.0113 | 0.28702 | 0.0642 | 81.83 | 268.4024 | 0.182 | 210 kHz |
| 30 | 0.01 | 0.254 | 0.0509 | 103.2 | 338.496 | 0.142 | 270 kHz |
| 31 | 0.0089 | 0.22606 | 0.0404 | 130.1 | 426.728 | 0.113 | 340 kHz |
| 32 | 0.008 | 0.2032 | 0.032 | 164.1 | 538.248 | 0.091 | 430 kHz |
| 33 | 0.0071 | 0.18034 | 0.0254 | 206.9 | 678.632 | 0.072 | 540 kHz |
| 34 | 0.0063 | 0.16002 | 0.0201 | 260.9 | 855.752 | 0.056 | 690 kHz |
| 35 | 0.0056 | 0.14224 | 0.016 | 329 | 1079.12 | 0.044 | 870 kHz |
| 36 | 0.005 | 0.127 | 0.0127 | 414.8 | 1360 | 0.035 | 1100 kHz |
| 37 | 0.0045 | 0.1143 | 0.01 | 523.1 | 1715 | 0.0289 | 1350 kHz |
| 38 | 0.004 | 0.1016 | 0.00797 | 659.6 | 2163 | 0.0228 | 1750 kHz |
| 39 | 0.0035 | 0.0889 | 0.00632 | 831.8 | 2728 | 0.0175 | 2250 kHz |
| 40 | 0.0031 | 0.07874 | 0.00501 | 1049 | 3440 | 0.0137 | 2900 kHz |
A wire gauge size chart facilitates informed decisions regarding wire selection, promoting safety, applications, specifications, efficiency, and reliability in a wide range of applications.
