Metric Properties of AWG Wire

color pew wires
2026-02-21
Takayuki HOSODA

AWG wire properties

Converts AWG number to metric diameter, area, resistance per unit length and allowable current.
Valid AWG sizes: 0000, 000, 00, 0–40.

AWG

Caution:
The allowable current Ia is an approximate guideline based on the maximum permissible temperature of vinyl insulation under normal ambient conditions with natural air cooling. It may be significantly reduced depending on installation method, ambient temperature, wire bundling, and other factors.

Formulas used

equations for AWG

References

  1. ASTM B258-23, Standard Specification for Standard Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires, ASTM International.
  2. ASTM B193, Standard Test Method for Resistivity of Electrical Conductor Materials, ASTM International.
  3. Vytenis Babrauskas and Indrek S. Wichman, Fusing of Wires by Electrical Current, Fire Science and Technology Inc., January 2011.
  4. NFPA 70, National Electrical Code (NEC), National Fire Protection Association.

See also

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