Round Glass IP65 Shower Downlight

I am replacing 4 x bathroom ceiling downlights each of which are already connected to individual transformers, does the 12v version of this light have standard wiring to fit an existing transformer? Also will it fit a 75mm opening
The 12v version is standard wired into a transformer. The cut out of this fitting is 70mm. So your openings would be too large.

We have purchased four of the above, 3 with low voltage and 1 with the mood lamp (mains). The false ceiling we want to use says that it should not be subjected to temperatures in excess of 60c. Are we ok using these lights?
If your ceiling states that lighting should not generate more than 60C you will have to use LED lamps. Even if we can find a standard halogen light fixture that has such a low bezel temperature you will be better off switching to a light source that gives out less heat in the long term to avoid discolouring of your ceiling structure. Contact us so we can change your order.

I have just had a new en suite bathroom fitted measuring 3.4 mts* 2.5mts. Can you tell me how many of the IP65 Shower Down lights we will need. I am thinking of the using the 11watt cfl lights or even the perfect fit LED spot lamp.
We would recommend that you use 4 - 6, but if you are planning on using the LED spot lamp then you will want 6.

I want to fit these low level into a stud wall in zone 1 of a wet room. I know the fitting and glass gives an IP protection suitable for this, but will the seal between the fitting and the tile be a watertight fit (ie, the use of a gasket and clap arrangement...unlike a normal down light fitting with sprung clips?
The IP rating is obtained in-situ i.e in a ceiling/wall with a smooth surface. The IP65 rating ensures water does not get to the electrical connection. It does not make a fixture waterproof nor does it give any protection against corrosion or chemical damage. You will have to both ensure the fixture is fitted correctly and add silicon as an additional protection to the gasket and to the fixing ring. The ceiling fixings are better then the rat trap style used on standard downlights.

We are refurbishing our en-suite and would like some recessed down lights, but we are not sure how many we need. The room is 1.5m x 1.5m and currently has 1 normal 60W bulb in it. How many units would we need in this size room? We are considering either the fire-rated downlights or the mains round glass downlights - could we use either halogen or LED lamps with these and what strength lamp would you recommend to give us the equivalent of our current 60W bulb?
Recessed lights use a reflector lamp and therefore provide a direct beam of light which is different from the omnidirectional light form a bulb. design standard (and our experience) suggest 300 lux as the guide level for bathrooms.
We carried out a quick lighting calculation and can advise that two downlights using 12v 50w 60º lamps gives 300 lux and a good light distribution. When using the mains GU10 lamp 3 downlights were required to achieve the same results - the PAR16 lamp is not as efficient as the 12v MR16 lamp.
This is based on white walls, white ceiling (2.4 metres high) and a light coloured floor. Cream or natural stone is more typical and aesthetics plays a part in the design - so considering the darker walls, the desire to avoid shadows and the need for good even illumination we would tend to suggest 4 light fittings with a 35w lamps.

I want to fit 2 shower fan lights over the shower area 1500 x 900 an then 4 x IP65 shower down lighters in the remainder of the bathroom. The overall size of the bathroom is 1.5 x 3.5mts. Is this he correct amount of lighting? What fan lights do you recommend
6 downlights in a space 1.5m x 3.5 metre will give you a nice bright bathroom which is more than likely exactly what you are looking for. We`d tend to suggest using one larger in-line fan with a ceiling vent and two downlights rather than two fan lights - There`ll be a fraction of the noise and less to go wrong!

We are redoing our bathroom which measures about 1.9m x 1.9 m. On one side will be a shower (About 1.9m x 0.8m). I would like to use your glass shower light with energy saving bulb. My question is this - how many lights do you think I would need for the room? I had in mind 2 for the shower (one towards each end) and 2 corresponding units in the room outside the shower. However, I wonder whether this would give too much light in such a small room?
In that size bathroom four downlights with 35w lamps (or equivalent) would be perfect. Consider using a LED instead of compact fluorescent lamps. The Philips lamp is perfect and can be found under spare lamps.

Could you please advise us on the space required upward from the ceiling surface. Especially on the mains version.
There is no manufacturer stated minimum required void depth however we would suggest at least 90mm is required.

What void depth does this require?
There is no manufacturer stated minimum required void depth however we would suggest at least 90mm is required.

Is the Round Glass IP65 Shower Downlight - 12v dimmable?
Whether or not this fitting is dimmable is going to come down to the transformer you use. Most electronic transformers (such as the one listed as a `Related Accessory` below) are dimmable with a good quality leading or trailing edge dimmer. Typically we would recommend those made by Richmond.

Would it be possible for you to recommend a transformer for running four of these lights where the lights are fitted in zone 1 of the bathroom please?
we always recommend using individual transformers for each downlight. Our standard 60va transformer is perfect and only costs around £5.00. We would also suggest a 60 degree lamp to avoid shadows.