IIRC, this regulation was down to an incident where careless fixing of plasterboard and skipping testing caused permanent contact between a live cable and a metal partition frame in a bathroom. Later the boiler leaked causing a puddle on the floor that reached under the plasterboard to the metal frame. Tenant knelt in puddle while trying to close a nearby stopcock, and died.
IIRC, this regulation was down to an incident where careless fixing of plasterboard and skipping testing caused permanent contact between a live cable and a metal partition frame in a bathroom. Later the boiler leaked causing a puddle on the floor that reached under the plasterboard to the metal frame. Tenant knelt in puddle while trying to close a nearby stopcock, and died.
