The best wire strippers are critical for basic electrical work, such as installing a ceiling fan or light fixture, replacing an outlet or light switch, or wiring a device like a garage door opener or DIY home security system. They can be used to repair all sorts of cables, like extension cords, chargers, a floor lamp’s cord, etc. They are also important tools for hobbyists who work on computer hardware, cars, robotics, and the like. And, get this: A wire-stripping tool can also help you make a tidy profit as a side hustle selling copper, an increasingly valuable metal with a current market price near $3 per pound. (Don’t go stripping the copper wires from your neighbors; we’re talking about legal means.) I discovered how effective a wire stripper could be when I had to swap out a light switch for a dimmer. This was after being charged $150 a year prior by an electrician for a 15-minute job, which I later discovered I could have done myself. So, armed with decades of DIY experience, tools that included a good wire stripper, and instructions from YouTube, I did the job myself. Whether you’re replacing an old light switch or selling scrap wire for cash, a wi...