How to Find the Diameter of a Copper Wire

Save

Copper wires are categorized by their American Wire Gauge, or AWG, size. A wire's AWG size enjoys an inverse relationship with its diameter; the lower the AWG, the thicker the wire and the heavier the current load it is able to carry. Conversely, a higher AWG indicates a thin, low-capacity copper wire. AWG tables provide a handy reference that tell you the diameter of any copper wire, given its AWG category. If you don't have a table on hand, you can still find the diameter of a copper wire with a few calculations.

Things You'll Need

  • AWG Table
  • Realize that 1 AWG = 289.3 thousandths of an inch, 5 AWG = 181.9 thousandths of an inch and 10 AWG = 101.9 thousandths of an inch. When reading an AWG table, notice that diameter is given in terms of "mils," which stands for thousandths of an inch.

  • Remember that copper wire diameters increase and decrease by a factor of two every six gauges, three every 10 gauges, 10 every 20 gauges and 100 for every 40 gauges.

  • Use 50 AWG = 1 mil as a base point. Using the general formula from Step 2, you can easily determine that 30 AWG has a diameter of 10 mil (50 - 30 = 20 and 10 mil every 20 gauges yields 30 AWG = 10 mil diameter).

Related Searches

References

  • Photo Credit spindle of copper wire on white background image by phizics from Fotolia.com
Promoted By Zergnet

Comments

Resources

You May Also Like

  • What Is 1/0 Gauge Wire?

    Electrical wire is measured in sizes called gauges. The smaller the gauge number is, the larger the wire diameter. One of the...

  • How to Measure a Wire Gauge

    Electrical wiring, speaker wire and wires used for crafting jewelry are all subject to specification requirements based on gauge. Proper speaker wire...

  • How to Calculate the Diameter of Wire

    When preparing to choose wire stock for your electrical job you need to know the diameter of the wire to determine what...

  • How to Determine Wire Sizes for Stranded Copper Wire

    Wire gauge size is measured and described in two different ways: American Wire Gauge and Metric Wire Gauge. American Wire Gauge is...

  • How to Convert Metric Cable Size to AWG

    Cables are usually sized directly using the metric diameter or the American wire gauge (AWG). An increasing wire size decreases the gauge...

  • Wire Measuring Tools

    Since wire is a flexible material, it can be difficult to get an exact length measurement. This may cause you to either...

Related Searches

Check It Out

Geek Vs Geek: Robot battles, hoverboard drag race, and more

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!