Mon, 25 May 2026 12:54:31 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8891#Comment_8891 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8891#Comment_8891 Mon, 05 Nov 2007 18:48:14 +0000 Rustychain
What are the alternatives? Are there any decent/prven LED kits out there? Is 12v better than 240v?

Suggestions/feedback appreciated.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8892#Comment_8892 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8892#Comment_8892 Mon, 05 Nov 2007 18:55:04 +0000 tony https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8898#Comment_8898 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8898#Comment_8898 Mon, 05 Nov 2007 20:16:49 +0000 jamesingram and the customers seem happy, you cant dim them though
also you have to be careful to find one deep enough to take the CFL GU10 bulbs as it a bit longer

the GU10 LEDs I've tried aren't up to much and are a bit blueish , some electrians are using them for effect lighting.



if the downlight is in the ceiling below a insulated loft ( no need to be fire rated)
use a large 9"+ earthenware plant pot over the light , seal it for air tightness and insulate straight over the top


a NICEIC inspector gave me that tip and its a lot cheaper than the various device you can buy to do the job]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8899#Comment_8899 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8899#Comment_8899 Mon, 05 Nov 2007 20:34:53 +0000 nigel
It can be used without a cover in insulated voids and it also has an airtight seal.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8923#Comment_8923 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8923#Comment_8923 Tue, 06 Nov 2007 10:44:17 +0000 Olly
Dimmable CFLs are available, but not in a GU10 fitting AFAIK.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8924#Comment_8924 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8924#Comment_8924 Tue, 06 Nov 2007 10:57:52 +0000 Chris Wardle https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8945#Comment_8945 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8945#Comment_8945 Tue, 06 Nov 2007 14:16:40 +0000 Paul_B
Some of the new Cree LED's seem to give very good output at around 3 - 5W]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8956#Comment_8956 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=8956#Comment_8956 Tue, 06 Nov 2007 18:14:10 +0000 Peter A Smaclite do what you are looking for, low energy downlighters, fire rated, accoustically rated and good air leakage (they really surprised the BRE when they did an air leakage demo for me), they have just brought out a dimmable bulb for their fittings and and IP65 rated fitting to go over the shower/bath. They do a retro fit LED that fits into low voltage fittings and works with existing transformer (haven't tried this one out yet).
Hope this helps]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9023#Comment_9023 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9023#Comment_9023 Wed, 07 Nov 2007 17:11:39 +0000 jamesingram https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9040#Comment_9040 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9040#Comment_9040 Wed, 07 Nov 2007 20:44:15 +0000 howdytom isn't the dimmer going to use as much electric as the CFL, be better of fitting two smaller CFL's and turning one off when you want less light.
tom]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9123#Comment_9123 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9123#Comment_9123 Thu, 08 Nov 2007 21:36:19 +0000 Rustychain https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9125#Comment_9125 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9125#Comment_9125 Thu, 08 Nov 2007 21:56:55 +0000 jamesingram I think your right
a 100w dimmer uses 100w no matter what bulb you use, I'll have to check .
Jim]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9130#Comment_9130 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9130#Comment_9130 Fri, 09 Nov 2007 03:23:28 +0000 Paul in Montreal capacity to dim a load of up to that rating. When the lights are at, say, 30% brightness, then the power consumed is around 30% of the light's rating (non-linearities in the brightness versus power curve notwithstanding). The dimmer's circuit does consume a bit of power, but it's somewhere around 5% of the load being supplied (depending on the type of dimmer).

Paul.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9166#Comment_9166 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9166#Comment_9166 Fri, 09 Nov 2007 17:03:14 +0000 jamesingram
its been a while since i went to college and most the time I wasn't really listerning just flicking elastic bands about

cheers Jim]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9195#Comment_9195 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9195#Comment_9195 Sat, 10 Nov 2007 10:40:53 +0000 Graham Bond https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9205#Comment_9205 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=827&Focus=9205#Comment_9205 Sat, 10 Nov 2007 16:10:28 +0000 Neil K
Interestingly the LEDs seem to be held in a wire frame, suggesting there is a cooling need. Being a hotel I didn't feel I ought to take them to bits to find out!

I have also recently bought a 4W single cell LED as a trial at work. Once again this works as a mood light, but I feel barely qualifies as a 'spot' light.

At the moment I would still tend towards CFLs and look for a focussing reflector of some time to generate the pool of light effect.]]>