Having come late into this thread, you would find it very hard to get
anywhere like 80A drawn by most domestic cookers - in the old days of
fuses
they were usually never fed through anything higher than 60A!

It is all about statistical loading as most hotplates and the oven have
thermostats. You would find it difficult to turn them all on at once, and
by
the time you turned the later ones on the earlier ones would have started
to
heat and the current drawn would have dropped.


The 80 amp was anothe rpoint that I remarked, in that with a cooker and an
electric shower or other high load device they could combined reach the 80
amp rating of a normal consumer RCD.

Jaime