Wire Gauge Resources
Comprehensive guides, charts, and reference materials for American Wire Gauge (AWG) sizing, wire ampacity, and electrical calculations.
AWG Wire Gauge Chart
Complete American Wire Gauge reference chart showing wire sizes, diameters, cross-sectional areas, and maximum current ratings for copper wire.
| AWG Size | Diameter (mm) | Area (mm²) | Copper Max Amps | Aluminum Max Amps |
|---|---|---|---|---|
| 20 | 0.812 | 0.518 | 10A | 7A |
| 18 | 1.024 | 0.823 | 14A | 10A |
| 16 | 1.291 | 1.31 | 18A | 13A |
| 14 | 1.628 | 2.08 | 20A | 15A |
| 12 | 2.053 | 3.31 | 25A | 20A |
| 10 | 2.588 | 5.26 | 35A | 25A |
| 8 | 3.264 | 8.37 | 50A | 40A |
| 6 | 4.115 | 13.3 | 65A | 50A |
| 4 | 5.189 | 21.2 | 85A | 65A |
| 3 | 5.827 | 26.7 | 100A | 75A |
| 2 | 6.544 | 33.6 | 115A | 90A |
| 1 | 7.348 | 42.4 | 130A | 100A |
| 0 (1/0) | 8.251 | 53.5 | 150A | 120A |
| 00 (2/0) | 9.266 | 67.4 | 175A | 135A |
| 000 (3/0) | 10.40 | 85.0 | 200A | 155A |
| 0000 (4/0) | 11.68 | 107 | 230A | 180A |
* Ampacity values are for reference only. Actual ratings depend on insulation type, temperature, and installation conditions. Always verify with NEC Article 310.
Wire Gauge Guides
External Resources
National Electrical Code (NEC)
Official electrical code standards for the United States. Reference for wire sizing, ampacity tables, and voltage drop requirements.
Visit NFPAIEEE Standards
Institute of Electrical and Electronics Engineers standards for electrical systems and wire specifications.
Visit IEEEUL Wire & Cable Standards
Underwriters Laboratories safety standards and certifications for electrical wire and cable products.
Visit ULElectrical Calculators
Additional electrical calculation tools including Ohm's Law, power calculations, and circuit analysis.
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