As described it seems an odd recommendation. Without knowing more about the inspector and what exactly was done, if the only problem was that RCD does not trip off when it should, then changing it would be cost effective and sensible, if the spare part is still available.


If there are other issues with the unit, such as mechanical damage or evidence of overloading etc, that would be a different matter.

Be aware that makers often have more than one pattern of RCD over the years and the new ones may not fit a board over a certain age, so do check the part numbers carefully. (and mixing devices of more than one make brings folk out in a rash of liability related panic, some are interchangeable, but others are not, even if they look similar, they may not make good contact to the bus bar etc.)



Also that table of results looks quite incomplete -

Firstly all the insulation readings are the same, so I presume it was all tested at once, which Is Ok, as it is well above the pass/ fail limit, but how one performs a figure of 8 test on a radial circuit is a bit of a mystery, as is the declaration of  R2 or R1 + R2 as "LIM"  for most circuits, meaning that the earthing of the cooker, the oven, the lights and the radial sockets have not been verified. In fact only the two rings seem to have been verified as earthed at all. How many man hours did you get for your money and was access to parts of the building blocked ?

Are there really so many circuits that are unknown, or are they really 'not used'  and blanked off. ?


More info needed I think.

Mike.

As described it seems an odd recommendation. Without knowing more about the inspector and what exactly was done, if the only problem was that RCD does not trip off when it should, then changing it would be cost effective and sensible, if the spare part is still available.


If there are other issues with the unit, such as mechanical damage or evidence of overloading etc, that would be a different matter.

Be aware that makers often have more than one pattern of RCD over the years and the new ones may not fit a board over a certain age, so do check the part numbers carefully. (and mixing devices of more than one make brings folk out in a rash of liability related panic, some are interchangeable, but others are not, even if they look similar, they may not make good contact to the bus bar etc.)



Also that table of results looks quite incomplete -

Firstly all the insulation readings are the same, so I presume it was all tested at once, which Is Ok, as it is well above the pass/ fail limit, but how one performs a figure of 8 test on a radial circuit is a bit of a mystery, as is the declaration of  R2 or R1 + R2 as "LIM"  for most circuits, meaning that the earthing of the cooker, the oven, the lights and the radial sockets have not been verified. In fact only the two rings seem to have been verified as earthed at all. How many man hours did you get for your money and was access to parts of the building blocked ?

Are there really so many circuits that are unknown, or are they really 'not used'  and blanked off. ?


More info needed I think.

Mike.