So we are back to the same question - why do you feel you need to do checks on the circuit when an appliance is connected via an outlet plate that you don't need to do when it's connected via a plug & socket?
I keep of being accused of avoiding/failing to answering an apparently simple question, which I have bas! but you don't seem to picking it up.
So i'll start again, with a little more detail.
This is my answer, how I see it, your opinion may be different, can you deal with that?
If I had removed the socket-outlet plate to disconnect the power to the kettle, toaster, microwave I would have isolated circuit, during isolation and disconnection this would be an ideal time to check protective device and cable were suitable for this particular circuit.
I ain't going to that though
i'm unplugging the kettle, toaster, microwave as this is the logical and practicable process to achieve that goal
I have no reason to disconnect circuit, my on the spot assessment is there is no reason to carry out this out.
Now then the cooker, can't plug this out as it was no plug
Out with the screwdriver, oh no best isolate circuit before I take cover off, cable could come loose and we don't want nasty bang
Again at this point during isolation and disconnection of cables at outlet, worth a little look the assure device and cable suitable for application.
and visa versa to re-energize
Yeh I'm happy with that, doesn't seem to illogical or inconsistent.