How can I spot a counterfeit extension cord without a multimeter?

Look for a precise UL mark with proper spacing and font—counterfeits often have a generic “UL” that’s off. Check the plug for smooth, uniform prongs; rough edges or a loose fit in an outlet are red flags. The cord should have the wire gauge printed clearly on the jacket, and the jacket should be thick and rubbery, not stiff or plasticky. If it smells like burning chemicals when uncoiled, that’s a bad sign.