Electrical circuit in an electrical power distribution structure is designed to operate at a certain current level as necessary. Every electrical circuit must be protected or gets protection, appropriate regulatory standards applicable locally, nationally, and internationally. Cable or conductor of each branch circuit protection must be to prevent the flow of current is greater than a predefined size.
Electrical components used is also a consideration that must be considered when securing a top choice. The standard cable used in electrical installations for domestic purposes. A workplace that demands a high level of security against the risk of electrical shock, such as laboratories, operating rooms and open mining sites typically electrical system with a safety device relationship dilengkai ground (ground fault).
Safety devices land relations are commonly referred to as Ground Fault Circuit Breaker (GFCI) or Earth Leak Circuit Breaker (ELCB). The safety device will open the electrical circuit when it detects a leak insulation to the machine frame. With the installation of these devices in an electrical circuit system, the personnel working in these locations received security guarantees against the danger of electric shock.
Besides, in every electrical system, typically installed safety devices also overload and short circuit safety commonly known as fuse (zekering) or circuit breaker (circuit breaker). There are various types of zekering available on the market, with special design as necessary, but the main purpose is to safeguard zekering installation of electrical systems. Zekering conductor made of a mixture of metal as a protection element which has a low melting point depends on the size zekeringnya.
When zekering receive greater flow than the current-carrying capability, the protection element protection elements will melt and open up the electrical circuit. Other safety devices are circuit breaker (circuit breaker). Circuit breaker (CB) serves as the light switches are installed in the electrical panel. When current flows through the circuit breaker devices that exceed the capacity of the current-carrying capability, then the device will trip, thus opening the electrical circuit.
Zekering size and breakers to be installed in an electrical circuit as a safety device must be determined carefully in accordance with the applicable national regulations. A personnel technician / mechanic should not be arbitrarily set the size zekering and breakers are used in an electrical circuit without following the applicable standards. Similarly, conductor cable used in an electrical circuit should not be arbitrary, but must follow the standards that apply nationally.