14-gauge vs 12-gauge extension cord: 12-gauge wins for runs over 50 feet

14-gauge is fine for 50 feet on a 15-amp circuit, but voltage drop hits 3% at that limit—tools run weak and motors overheat beyond it. For 100 feet, 12-gauge keeps drop under 3% and avoids damage. Skip daisy-chaining; just buy a 12-gauge 50-footer.