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Circuit breakers have been around for a long time but nobody really realises why all of these electrical components actually come in useful.
Brief History
The idea itself came from Edison in 1879 so the circuit breaker idea has actually been around for a very long time indeed. Edison’s idea was to protect lighting circuit wiring from accidental short-circuits and overloads.
What They Do
All circuit breakers have things in common and that doesnt matter on whether they are big or small it does depend on the voltage class of course.
The circuit breaker will not jsut shut the power off for no reason so do not get annoyed if it does this, it will do it if there is something wrong. Once a fault has actually been detected contacts within the circuit breaker will open up to interrupt the circuit. Some of the smaller ones can be manually used to shut off the electricity at a fast rate.
When the current is actually interrupted an arc is generated and this arc must then be contained, cooled and taken out in a controlled way. This enables the gap between all of the contacts to continue which is always good.
Saving Lives
Lives are saved through these circuit breakers everyear which is pretty cool. The problem occurs in the normal home when someone tries to plug in too many appliances to one location. With too many appliances plugged in to one place it can be very easy for a fire to start. If a fire breaks out it could of course burn down the entire house and sometimes this can be avoided if you had that important circuit breaker. The circuit breaker will cut off all of the power before a fire starts.
So although you may not think all of those mil spec cables are important it would seem that they are.
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