3. How over current protection, differential protection and earth fault protection work.

Question

Accepted Answer

Over current protection, differential protection, and earth fault protection are methods used to safeguard electrical systems.

Over current protection is used to detect and interrupt excessive current flow in a circuit.
Differential protection compares the current entering and leaving a component to detect faults.
Earth fault protection detects current leakage to the earth and isolates the faulty circuit.
Over current protection devices include fuses, circuit breakers, and relays.
Differential protection is commonly used in transformers and motors.
Earth fault protection is crucial for safety in electrical installations.

Accepted Answer

To use breaker RCCB(residual current circuit breaker) and ELCB( Earth leakage circuit breaker) and breaker used occur fault to trip

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