IP rating of SELV lighting in bathroom zone 2

If your standing on the edge of a bath they won’t be in zone 2

If they are zone 2 IPX4 is the minimum 

Not just the OSG, but the wiring regs say the same as well. IP something 4 please-- i.e. protected against splashing, not that unreasonable.

701 .512.2
External Influences
Installed electrical equipment shall have at least the following degrees of protection:
 (i) In zone 0: IPX7
 (ii) In zones I and 2 : IPX4.
This requirement does not apply to shaver supply units complying with BS EN 61558-2-5 installed in zone 2 and located where direct spray from showers is unlikely.
Electrical equipment exposed to water jets, e.g. for cleaning purposes, shall have a degree of protection of at least IPX5.

Mike

Colin Haggett: 
 

If your standing on the edge of a bath they won’t be in zone 2

The scenario is that there is a bathroom mirror next to the bath. The mirror is surrounded by a wooden frame, The downlights are installed in the top of the frame which is approx 2m high from floor level. The fittings are open-backed with one being approx 0.4m from the edge of zone 1, so is within zone 2, with the Tx lying next to them. Being 6' 4" I can easily reach the top of the lamps and their push on connectors from the floor, as can anyone who had a mind to stand In the bath or on the edge of the bath and reach across - perhaps unlikely but possible, and consider protecting people from their own carelessness.

mapj1: 
 

Not just the OSG, but the wiring regs say the same as well. IP something 4 please-- i.e. protected against splashing, not that unreasonable.

701 .512.2
External Influences
Installed electrical equipment shall have at least the following degrees of protection:
 (i) In zone 0: IPX7
 (ii) In zones I and 2 : IPX4.
This requirement does not apply to shaver supply units complying with BS EN 61558-2-5 installed in zone 2 and located where direct spray from showers is unlikely.
Electrical equipment exposed to water jets, e.g. for cleaning purposes, shall have a degree of protection of at least IPX5.

Mike

Re IP rating, I asked because advice given on a forum elsewhere stated that they should be minimum IPX4 ‘or’ be SELV, and because section 1.7 of GN 7 appears to refer to 230v only requiring minimum IPX4, suggesting SELV does not, neither of which seems to concur with section 701.

And what about the push-fit connections being relatively easily accessible to a person using the bath?

 We normally think of both the ‘hole size’ and ‘dust and water’  parts of the IP rating rising together, so IP20 IP44 IP68 etc as the openings get smaller, but you could I suppose have IP 04, a design where  splashing is OK,  but in some way open that you can put your mitts into the works, as it were. More likely in this case   IP24 - fingers less than12mm can be poked in, but splashing is not a problem.   More on this

Mike.

Re IP rating, I asked because advice given on a forum elsewhere stated that they should be minimum IPX4 ‘or’ be SELV, and because section 1.7 of GN 7 appears to refer to 230v only requiring minimum IPX4, suggesting SELV does not, neither of which seems to concur with section 701.

IP X4 or IP 4X? - 4X (or 2X) is generally required for shock protection reasons for LV (keeps fingers or knitting needles out), but IPX4 is about liquid ingress and so is more about stopping corrosion, ensuring things don't malfunction or in the days of incandescent lighting ensuring that lamps don't shatter when splashed with water and so on - so would be expected to apply equally to SELV and LV. 

   - Andy.