4 Things to Know About 16-Gauge Extension Cord Length

Keep a 16-gauge cord to 50 feet for a 10-amp tool At 50 feet, voltage drop stays under 5%, which is the safe limit most tool manufacturers recommend.

Longer cords cause voltage drop that damages tools At 100 feet, a 16-gauge cord drops 7-8% voltage, making tools run slower, overheat, and void warranties.

Voltage drop is real and predictable Resistance in the cord causes 3-4% voltage loss every 50 feet at 10 amps on a 120V supply.

Step up to thicker gauge for longer runs Use 14-gauge for 75-100 feet and 12-gauge for over 100 feet to avoid overheating and motor damage.