Aircraft Electrical Diagram

Wire Gauge Tables

For a correct selection of a wire size you need the expected current requirements, acceptable voltage loss or drop and the lenght of the wire. This way you can be sure that the wire can be trusted to power the attached device without nasty side effects as heat, smoke and fire. Which would end a flight prematurely.

Document below shows the conversion between American Wire Gauge (AWG) and Metric wire sizes.

Wire Gauge

AWG - Metric conversion, diameter table and wire selection tables