In areas that can have an extra risk for people, additional protection will be required, generally in the form of residual current devices. However other means can be employed in certain instances.
What it means
In any location which contains a bath or shower, sauna or swimming pool, the effects of electric shock on a person could well be magnified by up to 25%, so additional protection is required in these locations.
Supplies into these locations should be protected by 30mA residual current devices, either RCCB or RCBO and must be circuits arranged to minimise the effects on other circuits if devices operates.