My MCB (Main Circuit Board) has a circuit breaker for each room and AC is directly connected with RCB (Residual Circuit Breaker). There is a room that trips its breaker at least once a fortnight.
Also, there's a circuit breaker, for a TV showcase which has TV, internet router, and set top box connected in it and the it trips once in a while. Whenever this one trips, the power adapter for the internet router gets wasted and becomes unusable. I opened the socket and positively confirmed there's no short in it, additionally, there's no black mark in power adapter or socket.
Any ideas why it is happening and what I should do next?
My house has 3 phase connection
Please find the pics of MCB here.
It has 8 miniature circuit breakers and what we see on the right is the RCD (Residual Current Device) I guess.
Update: The room which frequently trips , burnt a plug last night. Please find the photos.
When the plug started burning at midnight , I fortunately woke up and went up to the MCB and turned off the circuit breaker manually.
The circuit breaker provides connection to Water heater in bath room , two tube lights , a zero watts night light , one incandescent bulb light and two round LED slim blight )
At the time of the incident , there was a plug from extension box which connects to a laptop and it's 32 inch screen was on and zero watts night light was on. That's all.
Any ideas why something happens with this room always like tripping twice in fortnight.
Someone please explain me what needs to be done to prevent any serious future issue.