Headaches can lead to scalp pain and to pain in any area of the face, neck or head. Several types of headaches may cause scalp pain, such as migraine, sinus headache, tension headache, and those caused by nerve involvement such as occipital neuralgia.
The circuit breaker. The circuit breaker does the same job as the fuse, but works in a different way. A spring-loaded push switch is held in the closed position by a spring-loaded soft iron bolt. An electromagnet is arranged so that it can pull the bolt away from the switch.
up vote 8 down vote accepted. Surge protectors and circuit breakers both cut off power during exceptional conditions, but they have different purposes and react to different events: Circuit breakers. Circuit breakers have only one job: to prevent the wiring inside your house from catching on fire. That's it, they do nothing else. They don't protect you from shocking yourself, or from lightning, or from your cat chewing through a power cord.