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IP65 light fitting in bathroom zone 2?

Electrical equipment in zone 2 in a bathroom must be rated at minimum IPX4 (excluding shaver units...), so, can an IP65 (circular bulkhead style) light fitting be used in zone 2? Mention was made elsewhere that IP ratings are not cumulative, suggesting that e.g IP65 would not be suitable in a minimum IPX4 area. 


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  • Mention was made elsewhere that IP ratings are not cumulative

    IP ratings are cumulative if you like, but the notation can be confusing if you don't know how it's worked out - which can make it look like they're not in a way.


    For instance IP50 doesn't include IP47 even though 50 is a larger number that 47 - you need to split things up into individual digits - if both digits are same same or higher then you're fine.


       - Andy.
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  • Mention was made elsewhere that IP ratings are not cumulative

    IP ratings are cumulative if you like, but the notation can be confusing if you don't know how it's worked out - which can make it look like they're not in a way.


    For instance IP50 doesn't include IP47 even though 50 is a larger number that 47 - you need to split things up into individual digits - if both digits are same same or higher then you're fine.


       - Andy.
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