I have already answered this question and explained why. You don't agree or choose to ignore it.
No - you have not answered it.
You have said what you do in passing whilst isolating the circuit.
You have not once given any rational explanation of why Matty should be
MORE CONCERNED about whether the installer used the right combination of cable and protective device when connecting an appliance via a flex outlet plate than when via a plug and socket.
I accept in principle (electrical principles) the circuits are almost indentical, with the exception of the outlet-plate.
"Almost identical"? We're back to your inability to grasp what is relevant.
In relation to the areas you believe are of special concern, i.e. fault loop values, the current carrying capacity of the cable, the relationship between Ib, In & Iz etc, please explain in what way those are affected by the presence of a flex outlet plate.
Matty disconnected the cooker-outlet not the socket-outlet,
No he didn't, he disconnected the cooker.
his concerns were to do with the dis/reconnection of the cooker, I would when going through the procedures of disconnecting the cooker, use safe isolation and do a visual on that circuit because I'm on it and it,s a logical thing to do.
You're hardly "on it" - you haven't opened the CU, you haven't traced the cable route, you haven't done any tests other than verify that it's isolated so that you can safely remove the cooker cable from the terminals. You have no idea what the volt-drop will be, you have no idea what the CCC of the cable is in practice, you have no idea if the protective device would operate in time, you have no idea if the insulation resistance of the cable is OK, you have no idea if any RCD is operating correctly....
But in any event, your practice of "I might as well do this little XYZ while I'm at it" is
NOT a logical explanation with any engineering or regulatory basis for why Matty should be more concerned about whether the original installation installer did his job properly when he's re-connecting an appliance via an outlet plate than when he's connecting it via a plug and socket.
Hopefully the circuit is as it should be regarding the fuse rating to serve the output of the cooker and suitable to protect the cable, if it wasn't I'd offer my concerns to the householder/client.
Hopefully the circuit is, as hopefully all of them are.
Please explain why Matty should be more concerned about whether it is or not when he's faced with an outlet plate than if he's faced with a socket.
Please explain the way in which an outlet plate rather than a socket affects the circuit in ways which relate to the suitability of the fuse rating and the cable size.
As a responsible person.
If I was unplugging and plugging back a kettle etc, not at anytime have been in contact with the internal parts of that circuit, if I had noticed a problem that I thought was a concern whilst at CU isolating/energizing the cooker circuit, or sparks coming from the outlet whilst brewing up, again even though I had not disconnected or touch any internal parts of that circuit. I would offer my concerns to householder/client.
Indeed you would.
Please explain how the presence of an outlet plate makes the circuit more of a concern than does a socket.
I have done something terrible or wrong by making this suggestion?
What you've done wrong is to refuse, over and over and over again to explain how the presence of an outlet plate affects the circuit, and therefore changes the concerns someone should have about it, and to claim that simply repeating over and over and over again what you would do is actually an explanation which I am choosing to reject.