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Thread: LED Lamp for Can light housings

  1. #76
    DIY Senior Member TJanak's Avatar
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    Thanks for the pics Chad. Looks like Cree's downlights are either 2700K or 3500K. In that case, I'll stick with the Home Depot 2700K Cree model. Their website shows them at $39.97 each for my store. I don't think there's any utility rebates offered here either.

    I would like to use the Lutron Toggler/Ariadni C-L dimmer which is made for CFL's and LED's HERE. Lutron lists the CR6 as compatible with their dimmer HERE but Cree does not list the Lutron Toggler/Ariadni as compatible with their lamp HERE. No big deal, I'm going to try it, but just interesting.

    What does concern me is Cree says this on their site: In situations where there are multiple dimming circuits sharing the same breaker feed, ELV (Electronic Low Voltage) dimmers should be used. What is an ELV dimmer? I can't find if the Lutron Toggler/Ariadni qualifies.

    Edit: This shit is too complicated and makes me want to use incandescents
    Travis

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  2. #77
    DIY Senior Member Chad Schloss's Avatar
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    that means if you have one circuit feeding two separately switched banks of lights you shouldn't use that style dimmer. like if you have your kitchen lights on the same circuit as your living room lights, and you tried to dim both sets of lights, it may mess with the dimmers somehow. not really sure anout the ELV dimmer. i have heard of a magnetic low voltage dimmer, but not sure on either of them. i am going to use the leviton vizia+ dimmers on these. I am going to hook them up this week to the living room lights. i see no need to dim the kitchen lights, so no dimmers there. hope you figure it all out, these are some nice lights. I have gotten quite a few people asking about them already when they see them.

  3. #78
    General Engineering Contractor ballvalve's Avatar
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  4. #79
    DIY Senior Member BobL43's Avatar
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    Quote Originally Posted by ballvalve View Post
    I have 2 of those (from Costco) in table lamps. They don't give off much light and they have a very limited degree of light emission because the entire back half is metal. In other words, those suck unless your a fortune teller and want some dark atmosphere.
    I am definitely not a pro plumber, but I am a pro crastinator

  5. #80
    DIY Senior Member TJanak's Avatar
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    What about the Sylvania RT6? It's a 6" LED downlight at 3000K. http://www.sylvania.com/en-us/produc...Pages/rt6.aspx

    Any feedback on these?

    I tried both the Sylvania RT6 and the EcoSmart model Cree CR6 and I like the Sylvania 3000K color better. We have a lot of daylight coming in the house so at night the 2700K just looks dingy.
    Travis

    When I need a precise measurement of something I often use the highly technical method of eyeballing it.

  6. #81
    DIY Senior Member TJanak's Avatar
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    Finally finished the lighting in the remodeled kitchen. Ended up using the Sylvania LED downlights I asked about in the previous post. We liked the 3000K color in the kitchen versus the 2700K. Really happy with the way it turned out, just hope the LED's last as long as their supposed to, at $50 each.

    This picture was taken at night with my phone camera. Spacing on the lights is right at 48" between. Hard to tell but it's plenty of light.

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    Travis

    When I need a precise measurement of something I often use the highly technical method of eyeballing it.

  7. #82
    In the trades Dana's Avatar
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    A color temp of 3000K-3500K is just about perfect for making food look good. A color temp 2700K makes human skin tones look slightly better directly under the light, but it's more eye fatiguing and red. (All of my fluorescent kitchen lighting is 3000K.)

    The CRI=82 for the Sylvania is a bit behind the 90+ for most of Cree's offerings, but still very decent for anything but the most stringent graphic-art specs. (I can't say I notice the difference, not that I'm a color-rendering purist. I notice color temp far more than CRI unless the CRI is in the 60s.)

  8. #83
    DIY Senior Member BobL43's Avatar
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    So my wife and I are out shopping yesterday, this time at Costco. I happened to see they just got in LED R40 reflector floods that are dimmable. Not that I need them to be, but they are. 10 Bucks each! I bought 2 and replaced the 2 R40 CFLs I had in my Bathroom ceiling. These LEDs have great light output (they claim equiv to 100 Watt incandescant) and they do have good color. I have no light meter or "Kelvin reader", but they look wonderful. I was happy with the CFLs, but being the Winter is upon us, and the CFLs do get a little cool up in the ceiling when off, they take almost a minute to warm up to full brightness. The LEDs are instant on. I did not realize I had the CFL's in this ceiling installed since Feb 2010, so those 2 lasted good for me, even with frequent on/off cycles. Lets see how these new FEIT brand LEDs last. Hey, they were cheap enough. When I get home, I'll pay more attention to their ratings of Lumens and color temp on the package label.
    I am definitely not a pro plumber, but I am a pro crastinator

  9. #84
    Jack of all trades DonL's Avatar
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    Quote Originally Posted by BobL43 View Post
    So my wife and I are out shopping yesterday, this time at Costco. I happened to see they just got in LED R40 reflector floods that are dimmable. Not that I need them to be, but they are. 10 Bucks each! I bought 2 and replaced the 2 R40 CFLs I had in my Bathroom ceiling. These LEDs have great light output (they claim equiv to 100 Watt incandescant) and they do have good color. I have no light meter or "Kelvin reader", but they look wonderful. I was happy with the CFLs, but being the Winter is upon us, and the CFLs do get a little cool up in the ceiling when off, they take almost a minute to warm up to full brightness. The LEDs are instant on. I did not realize I had the CFL's in this ceiling installed since Feb 2010, so those 2 lasted good for me, even with frequent on/off cycles. Lets see how these new FEIT brand LEDs last. Hey, they were cheap enough. When I get home, I'll pay more attention to their ratings of Lumens and color temp on the package label.
    They must be getting cheaper, finally.

    What kind of guarantee do they have ? Claim Hours ?

    I have many CFLs that failed early. I had one that failed then it started working again, Now I don't trust it. They are not worth returning to China for replacement.

    Seems like the CFLs could have a soft-start , so they don't POP on start.
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  10. #85
    DIY Senior Member BobL43's Avatar
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    Quote Originally Posted by DonL View Post
    They must be getting cheaper, finally.

    What kind of guarantee do they have ? Claim Hours ?

    I have many CFLs that failed early. I had one that failed then it started working again, Now I don't trust it. They are not worth returning to China for replacement.

    Seems like the CFLs could have a soft-start , so they don't POP on start.
    The package says 3 year guarantee Don. They claim it will last 28 years, so I doubt if I will ever find that out. If I live that long, I probably be sitting in a rocking chair in a nursing home waiting for somebody to come by and wipe the drool off my face, and that's if I even realize it needs to be wiped. Where is that pretty little nurse I rang for anyway? Who the hell are you lady? And what do you want? Ehh, speak up!
    I am definitely not a pro plumber, but I am a pro crastinator

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