Jim and David.
Are these the ones you’ve used? Thx.
https://www.costco.com/Feit-4'-Linka...100410429.html
or maybe these? from Amazon: https://www.amazon.com/4FT-Shop-Ligh...led+shop+light
Jim and David.
Are these the ones you’ve used? Thx.
https://www.costco.com/Feit-4'-Linka...100410429.html
or maybe these? from Amazon: https://www.amazon.com/4FT-Shop-Ligh...led+shop+light
Jon, the Feit from Costco is what I have...they often go on sale for much lower than the $59 in the link. I plan on buying another "two pack" the next time they do go on sale to fill over my bandsaw as I noted earlier. I've been very, very happy with them as well as their predecessors. (I have three generations of them...as well as their "replacement tubes" in a few T12 fixtures I chose just to replace the lamps in)
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The most expensive tool is the one you buy "cheaply" and often...
A couple of points. First, I need to change out my 8ft lights in my shop. They are the major lighting and are both expensive tubes and not enough lighting. And I'll do leds with no ballast. But I have other experience with led fixtures that so far has been good. Basement has t8 4 bulb troffers. Slowly going to replace as I run out of tubes to replace. But in one area it was poorly lit and I added 3 led 2x4 troffers. 20 months ago, daily use of 6 to 10 hours and no issue. Bought a 2x2 for near stairs that was not lit and it puts it way more lumens than a 4 bulb t8 fluorescent.
Had laundry room fixture go out after 2 years last month. Was cussing that cheap led fixture till I opened it up and found a dual circline fixture. Ballast had died and bulbs were black, so near death too. Replaced with 3100lumen led fixture. At least double the light. And half the wattage.
Toss the fluorescents, the output goes down the first time you turn it on.... Leds, no loss over time.
Woodworking, Old Tools and Shooting
Ray Fine RF-1390 Laser Ray Fine 20watt Fiber Laser
SFX 50 Watt Fiber Laser
PM2000, Delta BS, Delta sander, Powermatic 50 jointer,
Powermatic 100-12 planer, Rockwell 15-126 radial drill press
Rockwell 46-450 lathe, and 2 Walker Turner RA1100 radial saws
Jet JWS18, bandsaw Carbide Create CNC, RIA 22TCM 1911s and others
Glad to see so many out there who like me prefer the 4000K light. I kept reading of all the wonders of 5000k+, but just can't buy into it.
I have NOT used these lights, but someone pointed them out to me, so thought I'd throw it out there. Again, I have no personal experience, but the design looks good, like the angled mount for the LEDs for better dispersion, and the price is great especially in the 25 quantity. They come in higher Kelvin, but you can order them lower. I'm not sure if that's a price bump or not. They're what I'm strongly leaning towards for my new shop, but haven't pulled the trigger yet.
Any thoughts on these?
https://www.omniraylighting.com/coll...r-led-fixtures
One of the first 2 listed most likely for me... the 3rd one has other length options etc as well.
David, how big is your shop for the 17 fixtures? Also, are they the 1 or 2 bulb Feits? I’m building a 40x28’shop, with a loft over one half which will have 10’ ceilings underneath, and th either half open to scissor trusses about 14’ at the peak.
Any advice on fixture/bulb number would be appreciated. I’ve read most of the lighting threads here, plus the linked one, but still am undecided.
ThX. Jon
Q: Why is the life of LEDs measured as lumen depreciation?
A: Unlike conventional light sources that reduce in output and eventually fail, LED products do not normally suddenly fail. Instead, the light output reduces over time.
The normal convention is to measure the life from when the output has reduced by 30%, i.e. when there is 70% light output remaining. This is often quoted as the L70 life and is measured in hours.
http://www.lighting.philips.com/main...n-depreciation
You are exactly correct and John is just continuing LED nonsense. Of course, cheap fluorescents are junk also.
Absolutely not difficult to use 50,000 hour T-8 bulb. We used 998 of them in one building 24x7 and replaced them every 5 years, which is 43,800 hours of use. We used light monitoring systems in clean room and QA so actually know what the light output was and they followed the manufacturers spec. Most FL manufacturers use life at 10% loss and the LED L70 is specified at 30% loss. LED L70 is using a method that is only a guess anyway so it is inherently flawed.
The Costco Feit units that I used for temporary use in one warehouse area have noticeable light loss after 2.5-3 year use of 65 hour/week use. Zero failures though.
Customer used 12 of HD's Commercial Electric LED 1x4 units in June, 2016. After just over 2 years of 45 hours work weeks, 3 are dead. HD used to have Pixies but switched to something cheaper:
HD_Junk1.jpg
Last edited by Greg R Bradley; 10-06-2018 at 10:39 AM.
I have nothing to compare my new LED shop lights to, but I just bought six, 8 foot Envirolite shop lights and couldn't be happier with my choice. I did quite a bit of research on lighting before buying these. They are pricy at ~$80 each but each light puts out 7200 lumens (good for about 100 sqft) and 5000 kelvin which is perfect for shop lighting.