GFCIs save lives. Learn how to test your GFCIs two ways, with these instructions.

There could be a tragedy waiting to happen if you haven’t tested your home’s ground fault circuit interrupters recently. Commonly referred to as GFCIs, these are the electrical outlets you should have ...

There could be a tragedy waiting to happen if you haven’t tested your home’s Ground Fault Circuit Interrupters recently. Commonly referred to as GFCIs, these are the electrical outlets you should have ...

Q: When I plugged my cell phone charger into a kitchen outlet, my phone didn’t start charging as it normally does—rather, it seemed that this one electrical outlet was not working. Is there something ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? A digital multimeter is an indispensable tool for testing, diagnosing, and ...

When working on electrical projects around the home—whether that’s troubleshooting an issue with your HVAC system, repairing an appliance, or testing a car battery—a multimeter is essential. These ...

John Carlsen has more than a decade of experience testing and reviewing home tech products, with a major focus on smart home security. He earned his BS in journalism from Utah Valley University. In ...