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Comprehensive AWG Wire Gauge Reference Chart
| AWG | Inch | mm | mm² | Ω/m |
|---|---|---|---|---|
| 4/0 | 0.460 | 11.68 | 107.2 | 0.00016 |
| 3/0 | 0.410 | 10.40 | 85.0 | 0.00020 |
| 2/0 | 0.365 | 9.27 | 67.4 | 0.00026 |
| 1/0 | 0.325 | 8.25 | 53.5 | 0.00032 |
| 1 | 0.289 | 7.35 | 42.4 | 0.00041 |
| 2 | 0.258 | 6.54 | 33.6 | 0.00051 |
| 4 | 0.204 | 5.19 | 21.2 | 0.00082 |
| 6 | 0.162 | 4.11 | 13.3 | 0.00130 |
| 8 | 0.128 | 3.26 | 8.37 | 0.00206 |
| 10 | 0.102 | 2.59 | 5.26 | 0.00328 |
| 12 | 0.081 | 2.05 | 3.31 | 0.00521 |
| 14 | 0.064 | 1.63 | 2.08 | 0.00828 |
| 16 | 0.051 | 1.29 | 1.31 | 0.0132 |
| 18 | 0.040 | 1.02 | 0.82 | 0.0209 |
| 20 | 0.032 | 0.81 | 0.52 | 0.0333 |
| 22 | 0.025 | 0.64 | 0.33 | 0.0530 |
| 24 | 0.020 | 0.51 | 0.20 | 0.0842 |
| 26 | 0.016 | 0.40 | 0.13 | 0.134 |
| 28 | 0.013 | 0.32 | 0.08 | 0.213 |
| 30 | 0.010 | 0.25 | 0.05 | 0.339 |
| 32 | 0.008 | 0.20 | 0.03 | 0.538 |
| 36 | 0.005 | 0.13 | 0.01 | 1.36 |
| 40 | 0.003 | 0.08 | 0.005 | 3.44 |
Frequently Asked Questions (FAQ)
Q1: What does AWG stand for?
AWG stands for American Wire Gauge, a system for the diameters of round, solid, nonferrous, electrically conducting wire.
Q2: Why does a higher AWG number mean a thinner wire?
Historically, AWG represents the number of drawing steps required to reduce a rod to a thickness; more steps mean a smaller diameter.
Q3: How do I choose the right AWG for my project?
Choose based on the maximum current (Amps) the wire needs to carry to avoid overheating or voltage drop.
Q4: Is it safe to use a thicker wire (lower AWG) than recommended?
Yes, using a thicker wire than required is almost always safe and helps reduce resistance and power loss.
Q5: What is the difference between solid and stranded wire?
Solid wire is better for permanent installations, while stranded wire is flexible and better for applications involving vibration.
Q6: How does resistance affect performance?
Higher resistance (common in thin, long wires) causes voltage drop and heat, which can lead to device malfunction or fire risks.
Q7: Can I calculate the resistance if I know the wire length?
Yes, you can multiply the resistance per meter (Ω/m) from this chart by your total wire length in meters.
