How to Determine the Gauge of your Automotive Wire

When discussing automotive wire, gauge size is important. What if you don't know the gauge of your automotive wire? Here's how to figure it out, in just five steps!

To determine the gauge size of a general automotive cable:
  1. Make a 1/2" cut in the wire.
  2. Remove insulation.
  3. Count the individual strands of copper.
  4. Use a micrometer to measure one of the strands.
  5. Compare the number of strands and the size of the strand to the chart below to determine the gauge.
Strand # / Strand Size= Gauge Size