Difference between revisions of "Bathroom electrics"
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==Zones== | ==Zones== | ||
[[:Category:Bathrooms|Bathrooms]] are divided into zones for electrical purposes. | [[:Category:Bathrooms|Bathrooms]] are divided into zones for electrical purposes. | ||
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===Zone 0=== | ===Zone 0=== | ||
* The interior of the bath or [[Showers|shower]] | * The interior of the bath or [[Showers|shower]] | ||
* Electrical [[:Category:Appliances|appliances]] here must be IPX7 | * Electrical [[:Category:Appliances|appliances]] here must be IPX7 | ||
| − | * Electrical appliances here must run on 12v | + | * Electrical appliances here must run on SELV at a maximum of 12v ac or 30v dc |
===Zone 1=== | ===Zone 1=== | ||
| − | * area directly above zone 0, upto a height of 2.25m above the bath or [[showers|shower]] | + | * area directly above zone 0, upto a height of 2.25m above the bath or [[showers|shower]], or to the height of the maximum reach of the shower head if that is greater. |
| − | * Electrical appliances must be SELV with the transformer | + | * Electrical appliances must be SELV with the transformer outside all the zones |
* Electrical [[:Category:Appliances|appliances]] must be IPX4 or better | * Electrical [[:Category:Appliances|appliances]] must be IPX4 or better | ||
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* Also area within 60cm of [[Plumbing|sinks]], plus area directly below this | * Also area within 60cm of [[Plumbing|sinks]], plus area directly below this | ||
* Electrical [[:Category:Appliances|appliances]] must be IPX4 or better | * Electrical [[:Category:Appliances|appliances]] must be IPX4 or better | ||
| − | * Electrical appliances here must run on SELV wth transformer | + | * Electrical appliances here must run on SELV wth transformer outside the zones |
===Zone 3=== | ===Zone 3=== | ||
* zone 3 ceased to exist in 2008 with the 17th edition of the wiring regs. | * zone 3 ceased to exist in 2008 with the 17th edition of the wiring regs. | ||
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===Unzoned=== | ===Unzoned=== | ||
| − | * Outside zone | + | * Outside zone 2 |
* Under the bath if a [[Hand Tools|tool]] is required to gain access | * 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 | + | * Shaver units permitted |
| + | * SELV appliances permitted | ||
| + | * Non-selv portable [[:Category:Appliances|appliances]] in bathrooms must be physically prevented from entering zone 2. This is usually done by limiting [[Flex|mains lead]] length on the appliance. | ||
| + | ==Unsuitable in all zones== | ||
| + | * Some appliances are marked unsuitable for bathrooms | ||
| + | * Some appliances are not thus marked, but are still unsuitable. CRT [[:Category:TV|TVs]] are one example. | ||
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[[image:equi bond outdoor 1537-2.jpg|thumb|outdoor equipotential bonding clamp]] | [[image:equi bond outdoor 1537-2.jpg|thumb|outdoor equipotential bonding clamp]] | ||
| − | + | Supplementary equipotential bonding is required for new electrical installations in bathrooms. There is no requirement to retrofit it to existing installs. | |
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| − | + | See [[Earthing_and_Bonding]] | |
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| − | [[ | ||
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==Showers== | ==Showers== | ||
Section to be written. | Section to be written. | ||
| − | Installing [[House Wiring for Beginners|mains electrics]] in [[showers]] is definitely frowned upon. But remarkably, it has been done! | + | Installing [[House Wiring for Beginners|mains electrics]] in [[showers]] is definitely frowned upon. But remarkably, [http://www.sda.co.uk/images/shower.jpg it has been done!] |
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==See Also== | ==See Also== | ||
| + | * [[Earthing and Bonding]] | ||
* [[Special:Allpages|Wiki Contents]] | * [[Special:Allpages|Wiki Contents]] | ||
* [[Special:Categories|Wiki Subject Categories]] | * [[Special:Categories|Wiki Subject Categories]] | ||
Revision as of 00:45, 21 July 2009
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 SELV at a maximum of 12v ac or 30v dc
Zone 1
- area directly above zone 0, upto a height of 2.25m above the bath or shower, or to the height of the maximum reach of the shower head if that is greater.
- Electrical appliances must be SELV with the transformer outside all the zones
- Electrical 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 sinks, plus area directly below this
- Electrical appliances must be IPX4 or better
- Electrical appliances here must run on SELV wth transformer outside the zones
Zone 3
- zone 3 ceased to exist in 2008 with the 17th edition of the wiring regs.
Unzoned
- Outside zone 2
- Under the bath if a tool is required to gain access
- Shaver units permitted
- SELV appliances permitted
- Non-selv portable appliances in bathrooms must be physically prevented from entering zone 2. This is usually done by limiting mains lead length on the appliance.
Unsuitable in all zones
- Some appliances are marked unsuitable for bathrooms
- Some appliances are not thus marked, but are still unsuitable. CRT TVs are one example.
Supplementary bonding
Supplementary equipotential bonding is required for new electrical installations in bathrooms. There is no requirement to retrofit it to existing installs.
Showers
Section to be written.
Installing mains electrics in showers is definitely frowned upon. But remarkably, it has been done!
