5 Things to Know About Flat Extension Cords

Flat cords are not inherently unsafe. The safety of an extension cord depends on its gauge and amperage rating, not its shape.

Flat cords are usually for light-duty use. They typically have thinner 16 or 18 gauge wire, making them suitable only for lamps, phone chargers, and small electronics.

Round cords handle more power. Round cords are often 14 or 12 gauge, designed for heavier loads like power tools or appliances.

Using a flat cord for high-power devices is dangerous. Plugging a space heater into a flat cord will cause overheating and risk fire.

Flat cords wear out faster in high-traffic areas. Their insulation can degrade from being walked on, so use them only in low-traffic spots.