14 AWG vs 12 AWG extension cords: 12 AWG wins for heavy outdoor use

14 AWG is too thin for most outdoor jobs — it drops voltage and heats up with tools like circular saws or pressure washers over 50+ feet. 12 AWG handles 15 amps up to 100 feet safely, making it the sweet spot. For 20-amp tools like welders, go up to 10 AWG.