[ R = \rho \fracLA ]
Common in North America, this system uses numbers where a smaller number indicates a thicker wire . For example, a 10 AWG wire is much thicker and can carry more current than a 14 AWG wire. electrical cable size
This comprehensive piece explains the engineering principles behind cable sizing: current-carrying capacity (ampacity), voltage drop, short-circuit temperature rise, and correction factors. It also walks through practical step-by-step calculations based on international standards (NEC, IEC, BS 7671). [ R = \rho \fracLA ] Common in