All wiring must consist of protections make it safe, both from the point of view of drivers and the devices connected to the system, and persons who work with them.
These protective instruments are essential because, as we all know, electricity is very dangerous and can cause fires and electrocutions. What they do is protect against overloads, shock breaker.
overload is called the excess current in a circuit due to a fault, poor insulation of the wires or excessive demand.
call to the passage of electric current through a human body can cause injury or even death. A short circuit occurs
touching two wires without having an impedance between them and having a potential difference or voltage.
guards are in charge of opening an alternate path for current in case of occurrence of a leak, and break the circuit if an overload, short circuit or step detects a lack of electricity.
The most used are the fuses, circuit breakers, grounding, thermal relays and circuit breakers.
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