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There are extra considerations for [[House Wiring for Beginners|
electrical wiring]] in a bathroom.

Article currently incomplete.


==Zones==
[[:Category:Bathrooms|Bathrooms]] are divided into zones for
electrical purposes.
===Zone 0===
* The interior of the bath or [[Showers|shower]]
* Electrical [[:Category:Appliances|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
[[showers|shower]]
* Electrical appliances must be SELV with the transformer in zone 3 or
beyond
* Electrical [[:Category:Appliances|appliances]] must be IPX4 or
better

===Zone 2===
* area beyond zones 0&1, extends 60cm horizontally and upto 2.25m
vertically beyond zones 0&1.
* Also area within 60cm of [[Plumbing|sinks]], plus area directly
below this
* Electrical [[:Category:Appliances|appliances]] must be IPX4 or
better
* Electrical appliances here must run on SELV wth transformer in zone
3 or beyond

===Zone 3===
* zone 3 ceased to exist in 2008 with the 17th edition of the wiring
regs.
* area beyond zone 2, extending to 2.4m horizontally and 2.25m
vertically.
* No [[:Category:Appliances|appliance]] IP requirement
* Some appliances are marked unsuitable for bathrooms
* Some appliances are not thus marked, but are still unsuitable. CRT
[[:Category:TV|TVs]] are one example.
* Shaver units permitted
* SELV appliances permitted

===Unzoned===
* Outside zone 3
* Under the bath if a [[Hand Tools|tool]] is required to gain access
* Non-selv portable [[:Category:Appliances|appliances]] must be
physically prevented from entering zone 3



==Supplementary bonding==
[[image:equi bond outdoor 1537-2.jpg|thumb|outdoor equipotential
bonding clamp]]

Why do it, when required
* not normally required on existing installs

What to bond
* all major pieces of metalwork, eg pipes, bath if metal, ceiling
light if metal, radiators, etc

[[Cable]] size
* usually 4mm^2 insulated
* soldered copper pipes are also acceptable as equipotential bonding
conductors

Connector types
* pipe
* radiator
* outdoor pipe

Other bonding options,
bonding bathroom items outside the room is accetptable, this is
sometimes useful to minimise visibility of bonding
* soldered copper pipe is acceptable as an equipotential bonding
conductor too

==Showers==
Section to be written.

Installing [[House Wiring for Beginners|mains electrics]] in
[[showers]] is definitely frowned upon. But remarkably, it has been
done!

See [[Earthing_and_Bonding]]

==See Also==
* [[Special:Allpages|Wiki Contents]]
* [[Special:Categories|Wiki Subject Categories]]



[[Category:Electrical]]
[[Category:Bathrooms]]


NT