I'm not disillusioned, but based on this thread (and others) I would ensure that the level of testing was agreed upon before contracting anyone to undertake such an inspection, so that the resulting report was up to the sort of standard I expected.
I'm not sure what exactly is covered by the definition of "periodic inspection and testing", so would refer back to the thread title which specifically references "EICR".
Electrical safety first state the five main aims of an EICR as being:
- Record the results of the inspection and testing to make sure the electrical installation is safe to be used until the next inspection (following any work needed to make it safe)
- Find any damage and wear and tear that might affect safety, and report it
- Find any parts of the electrical installation that do not meet the IET Wiring Regulations
- Help find anything that may cause electric shocks and high temperatures
- Provide and{sic} important record of the installation at the time of the inspection, and for inspection testing in the future.
Obviously I understand that there will be limitations on any EICR produced and that it is unrealistic to test at every single point and impossible to inspect every inch of the installation as homeowners generally aren't going to permit an inspector to smash holes in their walls. That being said, I still fail to see how 50 circuits per day can permit any useful level of testing or inspection in a domestic situation. Which circuit do you choose? The lighting circuit with no CPC or that RFC with spurs wired off spurs? The former will be immediately apparent, but the later will not if it doesn't happen to be the lucky circuit on the day of testing. In short; a 2 hour EICR will likely fail to meet requirements 1-4 in the above list.
I'm not sure if we're at cross purposes and you're posting about large commercial installations or if you would really provide a domestic EICR with such a low level of detail as to effectively render the report useless. Think of all those issues you've had to rectify when fixing faults in domestic premises and consider how many would go unnoticed in a 2 hour EICR.