need advice please. after completeing a PIR on a domestic property, a ring circuit end to end on the neutral was open. spent most of the day searching for break and concluded it must be in a jb somewhere in a partion wall . IR readings are fine. client has a wonderfully decorated house and no way can we damage anything. would it be acceptable to downsize to 20 amp breaker( 30mA ) and noting this on the PIR?