Circuit breakers, despite any techy magic happening beneath the surface, should be the most predictable things in the world.

Your circuit breakers are some of the most important but least understood parts of your home's electrical system, keeping you safe from electrical fires. Let's take a look at how they work.

Unless storms bring down power lines, electrical systems are remarkably reliable and safe due to strict codes and built-in safety features. They cover all but a few weak links that appear mainly in ...