Definitions of Terms as Used in The Rules of This Order
23.3 Wire Gage means a standard of measurement used for convenient nomenclature of the various size of wires.
A. American Wire Gage (AWG) otherwise known as Brown and Sharpe (B&S) for copper, aluminum and other conductors.
B. Birmingham Wire Gage (BWG) for iron and steel conductors (used principally for telephone and telegraph conductors).
C. New British Standard (NBS), a wire gage for certain copper, bronze or copper-covered steel conductors (a modification of BWG used principally for telephone conductors).