When a nerve is cut, both the nerve and the insulation are severed. Sometimes, the fibers inside the nerve break while the insulation remains intact and healthy. If the insulation has not been cut, the end of the fiber farthest from the brain dies. The end that is closest to the brain does not die.
circuit breaker. n. 1. An automatic switch that stops the flow of electric current in a suddenly overloaded or otherwise abnormally stressed electric circuit. 2. An automatic halt or suspension in the trading on a stock exchange that takes effect in response to a specified amount of loss.
Refrigerators list among the Top 5 appliances that can trip a circuit breaker. A circuit breaker is designed to break circuits so that electrical shorts, faults or excessive power draw on a system doesn't cause fires or put homeowners at risk. Originally developed in the 1920s as an alternative to fuses, circuit breakers are now found in millions of homes across the United States.