Unlike the last test you took in school, this one is fast and easy—and protects you from harm. An electrician explains.

There's a lot of untapped potential in our homes and vehicles that could be harnessed to reinforce local power grids and make them more resilient to unforeseen outages, a new study shows.

Ready to cross that electrical project off your to-do list? Understand wiring color codes so you can finish the job safely.