Give 'em a poke, hard enough to move the conductor if its actually loose - if it doesn't move, then assume its tight.

I'm thinking of all sorts here, from the little final circuits through to Sub distribution supplies, big switch fuses, switch gear and bus bar terminations. 

An EICR is just a report on one mans opinion - Are they look and feel tight - poke, poke, wiggle wiggle...........Yah I think so. Pass.

Or, "no there's definitely one conductor loose here, we better check them all with some diligence." Probably at extra cost on a return job.  

Initial verification - I'd check maybe one in ten with a torque setting if the job was high spec enough, and I know the installer has to use the torque setting too. 

I must confess though, when I'm doing the installing - and there's no specific requirement to use a torque setting from the client, I don't use a torque anything......I'm too old - I'm adamant I know that's tight enough to hold the connection, and not so tight that it'll do damage to the screws/bolts I'm tightening up .......... clearly this approach has its detractors. 

gkenyon said:

But doesn't that involve undoing them a little, then re-tightening (i.e.for initial verification, repeating someone else's work, or the work you just did yourself)?

If they have been torque-tightened, I think that you can assume that they are tight enough, but not too tight.

I agree that if you check and the screwdriver clicks, they are tight enough, but could be too tight.

I also agree that it is difficult (=impossible?) to check lever terminals for tightness, but you can check for security. What were we taught? Use all senses when inspecting, so feel whether a connection is secure.

(At this point, I might ask why tyre fitters always overtighten wheel nuts/bolts, but by the grace of God, I have never had one snapped.)