If its an over/grill yes it is, you only need higher current available for a cooker where more than one element is on at a time, i.e. hob and oven/grill.... IIRC there was a baby bellend that needed a cooker supply as it was "all on" capable, where as most baby bellends were "selected on" and could use a 13a plugtop for supply.
Niel.