It was time to look for some 50w halogen down light replacements for out on grid house. Its a small place with a simple kitchen dining and lounge open plan arrangement. There is two 50w down lights in the kitchen one over the sink and one over the bench. Next to the kitchen there is two 50w lights over the dining table and in the lounge there is just one 50w down light in the center over the coffee table. This arrangement provided good lighting for many years Often we would just leave the kitchen lights on and the background light would be enough for the lounge and dining room. Though at 110w including transformer consumption it wasn't very efficient. and with them all on it was around 275w or so. All the other lights in that house are led down stairs rumpus room,bedrooms,bathroom passage way and so on. Because the electroplating on some of the fixtures was starting to come of from heat a gave in and went hunting for a complete led light , fixture and transformer replacement.
I needed five down lights. After some online research I settled on this one.
Full testing done in the link.http://www.ledbenchmark.com/display.php?id=162&name=SAL+Sunny+Lighting+Warm+White+LED+Downlight+Kit+White
10w total consumption, 700lm tested output, 0.9 power factor, 96 deg angle, trailing edge dimmable down to about 15% output. Didn't hardly register on the flicker graph actual got a better result than the halogen. 3034k C temp and max 46deg C at 25C so they run cool. Great large cast aluminum heat sink and a . 83 C accuracy and ip44 rated. 5 year warranty based on 10hrs use a day. $32 each as a complete kit
Was about the best i could find. They came with dimmable transformer and two pin lead. So it was a direct 2 min instillation swap from the old lights. I like how they are completely sealed from bugs at the front and cool AC leaking into the roof.
They are way to bright! I love the light quality and spread but you could perform open hart surgery at the dinning table now. I dimmer is a must have on them. I have a few clipsal trailing edge dimmers on there way and they should be great once I have them installed. Most of the time i could run them at 1/2 power. So I have cut my consumption by 5 times and perhaps more when the dimmers are instaled and I have brighter lights when needed. Another reason I wanted to install the led's is heat this house is going to be a rental soon so I wasnt comfortable with the fire starting halogen lights and the maintenance of changing the bulbs.
Offgrid 2008, Selectronic PS1 6kw/48v inverter, x 2 Midnite solar classic 150 MPPT, 3960w NE PV 24 x 165w BP panels, 4200w NW PV 21 x 200w DAQO PV, 16x400ah lithium.