the circuits have been in use for around 30yrs
This is part of the reason why you would want to do a full system test on it. It could be due a full re-wire if the circuits are that sort of age.
In my opinion, a board change requires a full test and classed as a new installation or at the very least, a minor works certificate with any deviations from the regs and notes all mentioned in there as well. Testing one or two circuits just doesn't cut it in my opinion as you'll have removed all the circuits, changed all the breakers, moved the cables around and disturbed the system as a whole. It also depends how large the installation is and over all condition of it.
I hope you mentioned to the client what the board change involves as it's a lot more involved than just swapping one thing out for another - if you start coming across readings that aren't acceptable then you could have a lot of fault finding or rewiring on your hands which is of course an added cost to the client. If you swap a board out and include 30mA RCBOs then you could have the issue of not being able to turn them on at all if there's an issue.
IMHO, and EICR is only as good as the electrician who tested it on the day - just like an MOT. You can trust it to a certain extent but it should be taken with a pinch of salt.
the circuits have been in use for around 30yrs
This is part of the reason why you would want to do a full system test on it. It could be due a full re-wire if the circuits are that sort of age.
In my opinion, a board change requires a full test and classed as a new installation or at the very least, a minor works certificate with any deviations from the regs and notes all mentioned in there as well. Testing one or two circuits just doesn't cut it in my opinion as you'll have removed all the circuits, changed all the breakers, moved the cables around and disturbed the system as a whole. It also depends how large the installation is and over all condition of it.
I hope you mentioned to the client what the board change involves as it's a lot more involved than just swapping one thing out for another - if you start coming across readings that aren't acceptable then you could have a lot of fault finding or rewiring on your hands which is of course an added cost to the client. If you swap a board out and include 30mA RCBOs then you could have the issue of not being able to turn them on at all if there's an issue.
IMHO, and EICR is only as good as the electrician who tested it on the day - just like an MOT. You can trust it to a certain extent but it should be taken with a pinch of salt.
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