When a breaker trips (shuts off), it’s usually because too many things were running on one circuit at the same time and it got overloaded. So if you’re running one or more high-amperage ...

We’ve all had to deal with tripped circuit breakers. They’re annoying and happen at the worst times. As a licensed electrician, I’ve seen my fair share of breakers, tripped or otherwise.

Here's what to know about so-called “circuit breakers" and when they're used to halt trading on stock markets.

Most people understand, too, that the breaker will trip if you overload the circuit with too many things plugged in or with an accidental short circuit. But how does this common device actually work?

Arc-fault circuit interrupters (AFCI) are special circuit breakers that listen for this noise in the power line and trip when they hear it. The problem is that they can be so sensitive that they ...

If it happens after that time, trading continues unless a level 3 breaker is tripped up. Level 2: The SPX drops 13% intraday. If this occurs before 3:25 p.m. ET, trading stops for 15 minutes.