AWG - American Wire Gauge vs. Circular Mils
The AWG standard includes copper, aluminum and other wire materials. Typical copper wiring is AWG number 12 or 14. Telephone wire is usually 22, 24, or 26. The higher the gauge number, the smaller the diameter and the thinner the wire. The Circular Mil - CM - is a unit of area used especially to denote cross-sectional size of a wire ...