a circuit breaker box
A circuit breaker is a safety feature of the electrical system. It stops the electricity from flowing through an overloaded circuit. It can also be used to turn off the power to a circuit while someone is working on the wiring. This can help avoid electrical fires and accidental electrocutions.
Related[]
External links[]
- How Circuit Breakers Work by Tom Harris on HowStuffWorks
- Wikipedia's article on circuit breaker