Q: What does “12/3” mean on a 100-foot extension cord and why is it important?
A: “12/3” indicates a 12-gauge cable with three conductors (two current-carrying and one ground). A thicker 12-gauge wire over long distances helps minimize voltage drop and supports heavier loads safely.
Q: What rating should I expect for a 100-ft 12/3 outdoor extension cord?
A: Many 12/3 outdoor cords are rated for 15 amps at 125 volts (≈ 1,875 watts) and use SJTW or similar weather-resistant jackets suited for outdoor jobsite use.
Q: Why is gauge and cord length critical when using an extension cord for tools or power-equipment?
A: Because longer lengths and undersized conductors cause increased resistance and voltage drop, which can lead to overheating, reduced tool performance, and safety hazards—so matching gauge, length and load is key.
Q: What maintenance or inspection practices help ensure the extension cord remains safe and reliable?
A: Regularly inspect for cuts or abrasions in the jacket, avoid coiling while in use (which restricts heat dissipation), keep cords off sharp edges and moist surfaces, and replace them if damage, overheating or fraying occurs.