Bro, for the RCD adaptor, you will need to check the trip time. For our home ELCB, trip time is normally less than 30ms. If the trip time of the RCD adaptor is longer than the ELCB you are using for your home, then it will not prevent your whole house from tripping. RCD adaptors are used in US and other western countries because they do not use ELCBs in their home supply.