Grok Source: 6 AWG means 6 American Wire Gauge. AWG is the standard North American system for specifying the size (diameter and cross-sectional area) of electrical wire conductors. The number is inverse:

American wire gauge Source: American Wire Gauge (AWG) is a logarithmic stepped standardized wire gauge system used since 1857, predominantly in North America, for the diameters of round, solid, nonferrous,