What does the #2 AWG wire diameter measure in inches or millimeters?

The diameter for #2 AWG copper wire is approximately 0.2576 inches (6.544 millimeters), as listed in the HyperPhysics table.

How much current can #2 gauge wire safely carry?

The ampacity for #2 AWG copper wire is typically rated around 115 amps in free air, though the exact value depends on installation conditions and temperature ratings.

What is the resistance per foot for #2 AWG copper wire?

The resistance per foot for #2 AWG copper is approximately 0.00052 ohms, with variations based on temperature and conductor length.

Can this resource be used for aluminum wire instead of copper?

No, the HyperPhysics #2 gauge wire table specifies copper properties only; aluminum wire of the same gauge has different diameter, area, and ampacity values.

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#2 gauge wire

Provided byHyperPhysics (Georgia State University)hyperphysics.gsu.edu

The wire gauge tables list 2 AWG with diameter, resistance, and current information for copper wire. It’s a direct re...

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About this tool

What #2 gauge wire does

The HyperPhysics #2 gauge wire reference provides a concise technical data sheet for 2 AWG copper conductors. It lists the essential specifications—diameter, cross-sectional area, resistance per unit length, and ampacity—so that electricians and hobbyists can verify material properties without searching multiple sources. The page is part of a larger physics constants database, offering a streamlined lookup for this specific wire size within an academic context.

Step by step

How to use the HyperPhysics (Georgia State University) #2 gauge wire

1
Navigate to the HyperPhysics #2 gauge wire page
2
Locate the diameter measurement for the conductor size
3
Check the cross-sectional area and resistance values listed
4
Note the ampacity rating for safe current carrying capacity

Is it right for you

Best for

Engineering students, DIY electricians, and hobbyists who need quick, authoritative specifications for 2 AWG copper wire as part of a physics or electronics course.

Limitations

Data is specific to copper conductors only
Resistance values are temperature-dependent and may vary
No alternative wire materials or metric conversions provided

Questions

#2 gauge wire FAQ

What does the #2 AWG wire diameter measure in inches or millimeters?: The diameter for #2 AWG copper wire is approximately 0.2576 inches (6.544 millimeters), as listed in the HyperPhysics table.
How much current can #2 gauge wire safely carry?: The ampacity for #2 AWG copper wire is typically rated around 115 amps in free air, though the exact value depends on installation conditions and temperature ratings.
What is the resistance per foot for #2 AWG copper wire?: The resistance per foot for #2 AWG copper is approximately 0.00052 ohms, with variations based on temperature and conductor length.
Can this resource be used for aluminum wire instead of copper?: No, the HyperPhysics #2 gauge wire table specifies copper properties only; aluminum wire of the same gauge has different diameter, area, and ampacity values.

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