Bathroom electrics

There are extra considerations for electrical wiring in a bathroom.

Article currently incomplete.

Zones

Bathrooms are divided into zones for electrical purposes.

Zone 0

• The interior of the bath or shower
• Electrical appliances here must be IPX7
• Electrical appliances here must run on 12v maximum SELV

Zone 1

• area directly above zone 0, upto a height of 2.25m above the bath or shower
• Electrical appliances must be SELV with the transformer in zone 3 or beyond
• Electrical appliances must be IPX4 or better

Zone 2

• area beyond zones 1&2, extends 60cm horizontally and upto 2.25m vertically beyond zones 0&1.
• Also area within 60cm of sinks, plus area directly below this
• Electrical appliances must be IPX4 or better
• Electrical appliances here must run on SELV wth transformer in zone 3 or beyond

Zone 3

• area beyond zone 2, extending to 2.4m horizontally and 2.25m vertically.
• No appliance IP requirement
• Some appliances are marked unsuitable for bathrooms
• Some appliances are not thus marked, but are still unsuitable. CRT TVs are one example.
• Shaver units permitted
• SELV appliances permitted

Unzoned

• Outside zone 3
• Under the bath if a tool is required to gain access
• Non-selv portable appliances must be physically prevented from entering zone 3

Showers

Section to be written.

Installing mains electrics in showers is definitely frowned upon. But remarkably, it has been done!

See Also

• Wiki Contents
• Wiki Subject Categories