Browse Forums Renovation + Home Improvement Re: Need to install downlights, but which ones? 7Jul 05, 2011 8:05 pm 13-08 Moved in 13-05 Build restart 13-04 VMIA compensation 12-08 Builder liquidation 12-03 Fixing 11-12 Lockup 11-11 Frame 11-09 Slab 11-09 Start 11-07 Contract 10-11 2K deposit 10-06 Titled land Re: Need to install downlights, but which ones? 9Jul 06, 2011 3:54 pm Newtown rebuild: https://forum.homeone.com.au/viewtopic.php?f=53&t=48977 Re: Need to install downlights, but which ones? 15Aug 29, 2011 4:05 pm Electrical - Automation - Smart wiring - New homes - Commercial - Data cabling] 1300 050 315 www.cenemelectrical.com.au www.facebook.com/cenemelectrical Re: Need to install downlights, but which ones? 17Aug 30, 2011 8:30 pm Electrical - Automation - Smart wiring - New homes - Commercial - Data cabling] 1300 050 315 www.cenemelectrical.com.au www.facebook.com/cenemelectrical Re: Need to install downlights, but which ones? 18Sep 06, 2011 11:46 am I ended up buying three different mr16 leds from two different stores to trial. Since i'm replacing halogen mr16s in fixed locations I'm restricted in the number of lamps. I got two 9W MR16s http://www.ledlightingaustralia.net.au/ ... 16-9W.html , http://www.trimenergy.com.au/shop-onlin ... ed-inside/ and an 8W MR16 http://www.trimenergy.com.au/shop-onlin ... downlight/ , which was a more expensive one. The two 9W MR16s were similar in appearance and llok very similar to most mr16 leds on all of online stores i've come across. I couldn't tell the difference in performance between the two but when placed next to a 50W halogen mr16 i could tell they are not as bright. I placed both into my bathroom (2.5 m x 3.5m) which had 2 x 50W halogen mr16s and did notice that the room was not as bright, yet the light level is for sure acceptable in my option. I placed the 8W mr16 next to one of the 9Ws in the bathroom and it was obvious the 8W was brighter which i expected for the extra price, yet this still confuses and fustrates me as you can't know how a light will perform on its power and so how can you know until you try the light? is performance then based on cost? The two 9W lights were the same but cost different. I then put back a 50W halogen to compare next the the 8W led and they were similar but the 50W halogen had more spread. I decided to order the 9W leds in my living room, kitchen / dining room, entry, lounge room, etc since the existing 50W lighting i have is overkill, for example in my lounge room (6.5 x 4.2m) i have 3 rows of 4 mr16s which is too many and i always dim these quite a bit when they are on. In my bedrooms, bathrooms, study, halls, I want to order the 8W since i don;t want the light level to drop too much. Unfortunately this light is out of stock for a few weeks and i cant find the same one somewhere else. I'm also looking at a Phillips 7W which is a similar price and might perform the same. I am anxious to see how everything looks when they are installed... Re: Need to install downlights, but which ones? 19Sep 06, 2011 12:49 pm mvoglis ... yet this still confuses and fustrates me as you can't know how a light will perform on its power and so how can you know until you try the light? is performance then based on cost? ... Short Answer If you want to know the light output, look at the light output in lumens. This will take care of everything. A halogen light gives off about 800 lumens and anything above 500 lumens shoud be fine as a halogen replacement. Only trust the quoted lumen output from a reputable manufacturer such as a well known brand name. Some smaller players have ridiculous figures quoted. Long Answer What matters is how much electrical power goes in and how much light power comes out. Electrical power is measured in watts and light power in lumens. An good LED light would give about 80 lumens per watt. So, to get the magic 500 lumens, you'll want an efficient 7W light. Some LED suppliers will quote lux, but this is a meaningless figure unless you want to look at the beam angle and then integrate the lux output across the full spherical light output. Or just look at the light output power in lumes, which is the same thing. Other factors that come into play are the CRI (Colour Rendering Index) - the higher the better, Colour Temperature - 2700 to 3000 K suits most people, and beam angle - I like it as wide as possible. This will upset the small manufacturers, but I would only buy a light from a well knwn brand name such as Philips, General Electric, Osram, etc. This is because some of the smaller manufactureres will tell you whatever you want to hear. They have no reputation to protect so will quote wrong lumen values. And who is going to check the values they state? Just for Fun If a light was 100% effecient, it would give off 683 lumens per watt. So a 1 W light would be a halogen replacement. I wouldn't wait for this one! Demolition August 2009, Construction Started September 2009, Completed December 2010 Re: Need to install downlights, but which ones? 20Sep 06, 2011 3:10 pm cenemelectrical HAHAHA @ led dave... sounds like your just using this forum to sell your products... and not give advice... +1 Suburbia is where the developer bulldozes out the trees, then names the streets after them. Joe, it depends on your certifier but we are noticing the ones we deal with are really cracking down. So i would recommend you follow your approved landscaping plans to… 4 11913 Hi Simeon, Thank you for laying it down for us. Makes sense. Appreciate it very much. Have a nice day. Cheers 2 9880 1) I had requested R6 ceiling insualtion batts, however I noticed that on some areas there are huge gaps which will allow hot air to sweep in, and also noticed black/grey… 0 5143 |