12 AWG Wire Diameter and Area

12 AWG wire has a diameter of approximately 2.053 mm (0.0808 inches).

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12 AWG is used for 20-amp household circuits — get its diameter, cross-section, and resistance specs here.

Frequently asked questions

What is AWG 14 wire diameter?: AWG 14 wire has a diameter of approximately 1.628 mm and a cross-sectional area of 2.08 mm². It is commonly used for 15-amp household circuits.