I'm looking to design the refurbishment of a hotel ('Premises with Sleeping Accommodation') and need to know if all new final circuits whether or not they supply bedrooms will need to be provided with AFDD. I appreciate this use of AFDD for final circuits supplying bedrooms but not sure if this should apply to other areas of the building i.e. existing plantrooms which includes socket circuits, lighting circuits and final radial circuits to fixed equipment. The first two of words of the regulation states 'if used,' which is vague in my opinion and may imply their use subject to a risk assessment. If this is the case, who carries out this risk assessment?