How to find the source of earth leakage

Is there any way that we can determine the earth leakage source

In case if there is any CB tripping, First Remove the output from the circuit breaker, test the circuit breaker on its own without load, sometimes the breaker might have a problem, then proceed by removing all the appliances on the sockets outlet, then plug one by one, the appliance that has got a problem will trip off the breaker. You can also use an earth leakage current clamp meter to determine the fault