The 17th Edition does not now define a zone 3 in a bathroom or shower room. What electrical equipment and accessories can be installed in the area between 0.6 m and 3.0 m from the edge of the bath or shower basin? Moreover, what minimum degree of IP protection are manufacturers likely to recommend?
There is no change from the 16th Edition requirements – that is, the general rules apply. The manufacturer’s installation instructions must always be followed.