Common reasons power trips repeatedly, what you can safely check, and when an electrician should investigate the circuit.

Repeated tripping is a warning, not an inconvenience
A circuit breaker or earth-leakage device is there to disconnect power when it detects conditions that may be unsafe. Resetting it repeatedly without finding the cause can hide a developing fault.
Common causes of tripping
Possible causes include an overloaded circuit, a faulty appliance, damaged wiring, moisture, loose connections, insulation failure or a problem with the protective device itself. The pattern of the trip—immediate, delayed, only under load or only in wet weather—can help narrow the diagnosis.
What you can check safely
If the problem appears after plugging in a particular appliance, disconnecting that appliance and leaving it off can help identify a likely source. Do not remove covers, bypass breakers or work on live electrical equipment. If the source is not obvious, arrange professional fault finding.
Why proper diagnosis matters
A systematic test can isolate the affected circuit and identify whether the problem belongs to fixed wiring, an appliance or the distribution system. That prevents unnecessary replacement of parts and reduces repeat call-outs.