OK, Softus, it's time to try a different argument.
We can all accept that plugging in a portable appliance is not notifiable becuase they are not part of the electrical installation.
An oven? It could be plugged in. Or it could be connected to an FCU. Is the latter notifiable but not the former? Now the hob. That has to be connected to its own circuit, but no-one considers the connection to be notifiable (at least I don't think so).
So what's the distinction between a hob and a shower? Both are appliances. Both take more power than can be supplied other than from a dedicated circuit. Both, in my view, are not notifiable because they do not form part of the electrical installation.
We can all accept that plugging in a portable appliance is not notifiable becuase they are not part of the electrical installation.
An oven? It could be plugged in. Or it could be connected to an FCU. Is the latter notifiable but not the former? Now the hob. That has to be connected to its own circuit, but no-one considers the connection to be notifiable (at least I don't think so).
So what's the distinction between a hob and a shower? Both are appliances. Both take more power than can be supplied other than from a dedicated circuit. Both, in my view, are not notifiable because they do not form part of the electrical installation.