State the function of : i) MCCB ii) ELCB iii) MCB iv) Switch.
i) MCCB : Molded Case Circuit Breaker (MCCB) is a circuit breaker and trip device assembled in a mould case. Also it can automatically cut off electric power in case of overload and short circuit.
ii) Function of ELCB : The ELCB detects fault currents from live to the Earth (ground) wire within the installation it protects.
iii) Function of MCB : Miniature circuit breaker operates automatically at the time of fault or over load. And it is used for the protection of electrical installation.
iv) Switch : The purpose of a switch in a series circuit is to make it easy to open or close the electrical circuit, turning the flow of electricity on or off