Hi SS, shedsssss did say he'd provided the new unit.
But a CU change is not a minor work, shedssss...s. You should have had a full periodic inspection and test, which would take at least two hours on a domestic, provided nothing is inaccessible. Certainly nothing less than a full Electrical Installation Certificate is valid for a job like this.
Having said that, it doesn't mean your installation is unsafe, just that you have nothing to prove it is. For example, on the job I was doing today the old fusebox looked fine, but the loop test I did on the light circuit showed that the protective conductor was not continuous and therefore ineffective. Also, the main bonding to the water supply, although present at both the fusebox and the stopcock, did not actually complete the journey - a length had been cut out by persons unknown, for reasons equally mysterious. An unusual occurrence but it does illustrate how a visual inspection is not enough.
But a CU change is not a minor work, shedssss...s. You should have had a full periodic inspection and test, which would take at least two hours on a domestic, provided nothing is inaccessible. Certainly nothing less than a full Electrical Installation Certificate is valid for a job like this.
Having said that, it doesn't mean your installation is unsafe, just that you have nothing to prove it is. For example, on the job I was doing today the old fusebox looked fine, but the loop test I did on the light circuit showed that the protective conductor was not continuous and therefore ineffective. Also, the main bonding to the water supply, although present at both the fusebox and the stopcock, did not actually complete the journey - a length had been cut out by persons unknown, for reasons equally mysterious. An unusual occurrence but it does illustrate how a visual inspection is not enough.