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.
In rare cases, the breaker may be damaged and need replacing. But in most cases, the breaker or fuse is just doing its job when it pops. Circuit breakers are designed to trip (fuses in your fuse box are designed to blow) and turn off power when any of the following dangerous situations occur. Continue to 2 of 4 below.