Kitchen lighting - electrician advice needed
Kitchen lighting - electrician advice needed
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Discussion

D5ACT

Original Poster:

66 posts

203 months

Saturday 12th December 2009
quotequote all
Hi

I'm in the process of gutting a flat I've just bought. One thing the gf and I would really like are spotlights in the kitchen ceiling.

We have a concrete ceiling and would have to board the ceiling to fit downlights.

Can someone please tell me if there is a certain gap between the original ceiling and the one I install to house the spotlights? I've been told that is is 130mm but want to ratify that answer.

Are there any links that I can read up on this subject?

Cheers, Chris

x type

980 posts

212 months

Saturday 12th December 2009
quotequote all
like all halogen lamps they can get hot , between 250 and 300 degrees. The general guidelines are 100 mm behind light fitting plus extra 50 mm all around of 'free air'. Whatever you do don't cover it with insulation.

dugt

1,657 posts

229 months

Sunday 13th December 2009
quotequote all
get led ones, you can get seriously bright ones now, use hardly any power, dont blow all the time, we have had some running 24 hours a day for about a year and a half. you can hold the light in your hand when there running, so no heat issues, slightly more expensive to buy, but could be cheaper in the long run

D5ACT

Original Poster:

66 posts

203 months

Sunday 13th December 2009
quotequote all
Thanks for all the advice.

In terms of LED lights what makes are good/bad also what is a reasonable price.

I'm pretty sure we will install downlights and will also fit speakers into the suspended ceiling.


Goochie

5,748 posts

241 months

Monday 14th December 2009
quotequote all
A GU10 or low voltage downlight will NOT get to 200 degrees.

The maximum temperature you should see on the downlight case is around 120 degrees C - This is with a 50W bulb so you can always reduce it to 35W if you're that concerned about the heat.

If you make sure that the downlights you're looking at carry the "F Mark" they will be suitable for mounting directly into a normally flamable surface such as wood.

50mm breathing space around the rear of the downlight is all that is required, just to give it some breathing space and prevent it from cooking itself.

As you're fitting these into a false ceiling that is below a concrete one, there is no need to go with a "Fire rated / Flameguard / Fireguard" type downlight. A simple, basic open-backed downlight will be perfectly adequate.

However, a fire rated downlight is enclosed at the rear so will help prevent any draught or dust getting into the kitchen.

LED Downlights can be quite good but for anything offering a true alternative to a Halogen bulb, you're looking at £60 ish per light. Even then they're only equivilent to a 35W halogen and the light is very "grey" and lacking in warmth. For a kitchen ceiling where under-cupboard lights are alos used, they may be suitable.

Good LED bulbs will fit a GU10 downlight and the best LED "bulbs" are available from Philips and Megaman. Collingwood have an LED Downlight that has integrated LEDs but when an LED fails you'll have to change the entire downlight.

- Phil (Technical manager of a leading downlight manufacturer) wink



Edited by Goochie on Monday 14th December 12:48

V12Les

3,985 posts

218 months

Monday 14th December 2009
quotequote all
Just in case your not aware...when cutting the holes, keep them 600mm off the wall.

Goochie

5,748 posts

241 months

Monday 14th December 2009
quotequote all
V12Les said:
Just in case your not aware...when cutting the holes, keep them 600mm off the wall.
.........and not directly below the joists wink

OldSkoolRS

7,071 posts

201 months

Monday 14th December 2009
quotequote all
V12Les said:
Just in case your not aware...when cutting the holes, keep them 600mm off the wall.
Sorry to butt in, but why is this (doing our kitchen in the new year and are planing downlights too)?

Goochie

5,748 posts

241 months

Monday 14th December 2009
quotequote all
The other thing to think about when doing a kitchen is where the doors will sit when open. I once saw an installation that had a very low ceiling - the (chipboard) door had been left open, directly under a downlight and had been damaged as a result.

Normally you should allow 500mm space between the downlight and anything that is going to be placed under it (top of cupboards, cupboard doors etc.)

Plotloss

67,280 posts

292 months

Monday 14th December 2009
quotequote all
Goochie said:
The other thing to think about when doing a kitchen is where the doors will sit when open. I once saw an installation that had a very low ceiling - the (chipboard) door had been left open, directly under a downlight and had been damaged as a result.

Normally you should allow 500mm space between the downlight and anything that is going to be placed under it (top of cupboards, cupboard doors etc.)
Just done a job with maccassar ebony wardrobe doors which go from floor to a plinth.

Big, well known lighting designer knowing the door size specced halogens.

Housekeeper left door ajar.

Newly refurbished flat now with odour de ebony.

V12Les

3,985 posts

218 months

Monday 14th December 2009
quotequote all
OldSkoolRS said:
V12Les said:
Just in case your not aware...when cutting the holes, keep them 600mm off the wall.
Sorry to butt in, but why is this (doing our kitchen in the new year and are planing downlights too)?
So as not to cast any shadows on the worktop when ones stood there. Less than 600 you'll get a shadow from the wall units and any more than 600 you'll get a shadow from yourself.

OldSkoolRS

7,071 posts

201 months

Monday 14th December 2009
quotequote all
Ah, thanks for that Les, I will be having under counter lights too, so as not to work in shadows, but that's a good tip.