For electrical fittings the bathroom is divided into zones into by the NZ Electrical Code of Practice as below:
This video from Eurotech Lighting gives an excellent view of NZ Lighting Regulations in a bathroom
https://www.youtube.com/watch?v=kz45vCXO3sg
![zone-bath](https://images.zeald.com/site/nzlighting/images/zone-bath.gif)
Zones about a bath
![zone-closed-shower](https://images.zeald.com/site/nzlighting/images/zone-closed-shower.gif)
Zones Enclosed Shower
![zone-open-shower](https://images.zeald.com/site/nzlighting/images/zone-open-shower.gif)
Zones open shower
IP Ratings for Light Fittings
Zone 0 |
Zone 1 |
Zone 2 |
Zone 3 |
IP X7 AND Safety ELV supply |
IP X4 Sealed Light fitting |
IP X4 Sealed Light fitting |
No IP Rating required |
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The X in the IP rating refers to the ability to resist dust and solid particles entering the light fitting. This number is not specified but it should be at least 4.