Zone 1, 2 and 3 | on ElectriciansForums

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What is Zone 1, 2 and 3 in wet locations? What does class 1 mean? Can someone educate on why, what and how this applies to kitchens and bathrooms?
 
regulations specify what we can, and cannot, fit in each zone.

class 1 equipment or appliances are generally those which have metal (conductive) casings etc.and must be earthed. class 2 are double insulated and/or non-conductive encolsures.
 
Be clear Zones and classes are very different things

Zones - as Tel indicates: refers to different areas within an area containing a bath etc.
Class - (electrical) : a description of the insulation/earthing of the item
Class - (IP) : a measure of ingress protection against mechanical and water penetration.

So the Regs specifies that in Zone "x" any electrical item must have IP Class "y" if electrical class "z", or IP Class "a" if electrical class "b" etc and/or which electrical classes are not permitted and/or which IP classes are not permitted.

It has been somewhat simplified recently both in terms of Zones and what is acceptable IP and electrical classes
 
Be clear Zones and classes are very different things

Zones - as Tel indicates: refers to different areas within an area containing a bath etc.
Class - (electrical) : a description of the insulation/earthing of the item
Class - (IP) : a measure of ingress protection against mechanical and water penetration.

So the Regs specifies that in Zone "x" any electrical item must have IP Class "y" if electrical class "z", or IP Class "a" if electrical class "b" etc and/or which electrical classes are not permitted and/or which IP classes are not permitted.

It has been somewhat simplified recently both in terms of Zones and what is acceptable IP and electrical classes


Makes sense. Is there by chance a table of what combinations are allowable?
 
regulations specify what we can, and cannot, fit in each zone.

class 1 equipment or appliances are generally those which have metal (conductive) casings etc.and must be earthed. class 2 are double insulated and/or non-conductive encolsures.


Where do RCDs fit into all this? Are they effected by either zone or IP rating?
 

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