No - checking that and remedying if necessary is part of a CU change.
A bit vague but not really - they could be discovered and rectified when fitting the new CU when of course there might be no faults.
So presumably doing it your way just means an additional day's work.
...and, no doubt, a happy customer.
Why only a few times?
People here make out it is standard practice and should always be done.
I quite agree.
So do you test everything again at CU change after your EICR has disconnected and reconnected various parts.
Oh ok - no point doing it after.
You shouldn't have to ask for an EIC and compliance certificate; they come with the job (with registered electrician).
Some (lots) say that that is a good idea, or indeed a must, but I could never justify the additional cost and time.
Plus what happens when something is discovered and the electrician says that's two hundred pounds for EICR please but I cannot fit a new CU because of...?
Compliance Certificate...
Probably not but within a few days to complete.
If he is a 'registered' electrician then he will notify his registration body for a few pounds then you will receive a 'compliance certificate' within thirty days from them and they notify the council.
If he is not a registered electrician then...
That's not quite right.
That would mean there is no point in having a top element.
The bottom element will take longer (and therefore cost more) before the water at the top of the cylinder gets "hot enough" - i.e. when the thermostat switches it off.