Question

In an household electrical circuit:
a) Where is the MCB ( Miniature Circuit Breaker ) connected?
b) What is the function of ELCB ( Earth Leakage Circuit Breaker )?

Answer 1

a) Instead of fuse, a miniature circuit breaker (MCB) is usually connected in series in electrical household circuits. It is connected in series at the beginning of each phase in the circuit.
b) ELCB directly detects current leaking to the Earth from the circuit and cuts off the power.