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IP65 light fitting in bathroom zone 2?

Farmboy
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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    I haven't been on the forum much in last couple of days, so wondered if I had missed a thread about IP ratings -but it seems others are also questioning the source.


    I did mention quite some time ago that IP69 does not guarantee IP68 or IP67.

    But up to IP66 always includes IP65, IP64 etc.

    IP66 resists strong jets, but this could be done by a "tortuous path" and so not necessarily pass IP67 submersion.

    Similarly IP67 submersion can be achieved with a weak gasket or flimsy membrane etc that is overcome by a strong jet.

    IP69 is hot high pressure jets, but from above. So in some cases could pass with a bucket over it and clearly not resist submersion or strong jets from below. 


    Edit: it is common to find eg connectors rated IP65/IP67. So they have passed both tests (and presumably doesn't meet IP66).

    If equipment meets all three it should be marked IP66/IP67/IP69  or IP66/IP68/IP69 as appropriate.
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  • 0
    I haven't been on the forum much in last couple of days, so wondered if I had missed a thread about IP ratings -but it seems others are also questioning the source.


    I did mention quite some time ago that IP69 does not guarantee IP68 or IP67.

    But up to IP66 always includes IP65, IP64 etc.

    IP66 resists strong jets, but this could be done by a "tortuous path" and so not necessarily pass IP67 submersion.

    Similarly IP67 submersion can be achieved with a weak gasket or flimsy membrane etc that is overcome by a strong jet.

    IP69 is hot high pressure jets, but from above. So in some cases could pass with a bucket over it and clearly not resist submersion or strong jets from below. 


    Edit: it is common to find eg connectors rated IP65/IP67. So they have passed both tests (and presumably doesn't meet IP66).

    If equipment meets all three it should be marked IP66/IP67/IP69  or IP66/IP68/IP69 as appropriate.
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