Domestic Electric IP Safety Guide

Bathroom lights

Bathroom lighting needs to be functional and safe.

The Bathroom is divided into three zones: 0, 1 and 2 to determine likely exposures to water.

Each fitting is given an IP (Ingress Protection) rating which relates to its water resistance and only light fittings suitable for the relevant zone should be used.

Avoid lighting which is too bright as polished surfaces may cause glare; diffused wall or ceiling lights are better.

The main light should be switched on by a pull cord of a light switch situated outside the bathroom.  

Glass or ceramic lights are best.  

It is wise to avoid those containing wood, leather or fabric as they can degrade in a humid atmosphere. 

Zone information:

Zone 0: Lights rated in this category are suitable for inside the bath or shower.   

Zone 1: Lights in this category are suitable for above the bath or shower to a height of 2.25m. 

Zone 2: Lights rated as suitable for Zone 2 can be put in the area stretching to 0.6m outside the bath or shower if over 2.25m.


Outdoor lights

IP44 and IP43 ratings are common for exterior traditional light fittings, but fittings with ratings as low as IP23 can also be used outdoors as they are fully rainproof.


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