I came across this forum while searching for better understanding on how to resolve my frequent power trip.
I am staying in a condo (mid-level) and somehow my unit's power frequently tripped during thunder & lightning while other units seem to be okay. My unit's DB has Single Pole MCB for TNB supply line protection and every time the power trip, it is the RCCB that trips.
I got a couple of electricians to suggestion solution. One suggests I replace the Single Pole MCB for TNB supply line protection with a Double Pole MCB, while another suggests that I replace the RCCB with lesser sensitivity.

To finally decide what to do, I like to seek for your expert opinions regarding the following for better understanding:

1.  Can the surge due to lightning causes the RCCB to trip? I always thought it should be the mains MCB and not the RCCB?

2. While replacing SP MCB with DP MCB provides better protection in general, does this replacement likely to reduce my RCCB tripping?

3. Replacing RCCB with a less sensitive model will definitely reduce the tripping, but how to avoid exposing my appliances to higher risks?

Thanks.....
Trying to attach the photo of my current MCB & RCCB [attachmentid=11497306]