You may have read my other posts. I was changing a shower for a pensioner and the things "developed" into replacing a wall, tiling it, etc! Now I want to fit new lights in the bathroom.
I understood the zones around a bath. In the 16th ed. zone 0 was in the bath, zone 1 was directly above the bath for so many metres, and zone 2 was so many metres to the side of zone 1, and zone 3 was so many metres to the side of zone 2.
Am I right to think the only change to the 17th ed. is that zone 3 is no longer called a zone and is now called "outside the zones"?
While I understand the zones around a bath, I am uncertain how they work around a shower tray.
To keep things simple, say the shower tray was put in a corner. There would be two walls which would be zone 1 and the tray itself would be zone 0. Now if the other two sides of the shower had a curtain around them. So what would the wall on the other side of the curtain be? Would that be zone 2? Or is it considered zone 1 because of the risk that the curtain might be left open and allow water out?
If the shower was enclosed by a glass cubicle, would that change the zones? There would be a glass door that opened on one side but the other side would be fixed. What zones exist then? If no water can get out of the fixed side, would there even be a zone there?
These are a couple of hypothetical situations. In my situation, the cubicle is in a corner so there are two brick walls and obviously these are inside the cubicle and are zone 1. Whereas I described a glass cubicle, in this situation the third side is a wall (the wall of tiled PB that I posted about earlier). The inside of that wall is again, inside the cubicle and is zone 1 but what is the other side? Since no shower water could get to it, is it outside the zones?
Of course it is within a bathroom, so I would need to consider how far from the bath and basin this third wall is.
I thought lights in zone 1 had to be IP44 rated and could be either 240V or low voltage. If 240V they have to have a 30mA RCD. A low voltage light needs the transformer outside of the zones. Is that right so far?
Some light selling web sites have said they must be IP65, which is why I am unsure about the IP rating.
The house is on a split CU: half RCD'ed, and half not. The lights are on the "not" side, so if I used 240v, I would have to use a spur RCD.
Are there any low voltage lights that are not recessed? I haven't used downlighters before (they are too young and trendy for me LOL) but I thought they were supposed to be a PITA because they get hot and are a fire hazard and you have to fit fire jackets, etc.
It is difficult to access the loft above the cubicle, it's in the corner so little headroom and there is a chimney breast making things very difficult. I would prefer not to have to go up there to play with the back of a downlighter. It's also dusty so I am worried about the heat and fire risk. Does a fire jacket stop the heat from getting out or does it only stop flames going up?