Home » Public Forums » GMCnet » New shop lights
| New shop lights [message #272154] |
Tue, 17 February 2015 08:18  |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
|
Senior Member |
|
|
I have 40-50 florescent light fixtures in my shop. It seems that wherever I want to work, the ballast or bulb in that area is bad and I have to muck around with it or work in the dark. Ballasts are expensive and the covers are a pain to get off. Plus I have to shut off the power to the rest of the lights and change it in the dark with a plug in light, I'm DONE I tell you! DONE!
Moving forward, I'm going to remove the fixture and wire up a couple porcelain screw in fixtures. These accept the 100W equivalent twisty bulbs that just screw in and can be changed with a light pole without even getting a stepstool. Ballasts and tubes are expensive and the twisty bulbs are actually considerably cheaper and put out ALMOST as much light.
http://www.gmcmhphotos.com/photos/misc/p57265-new-shop-lights.html
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
|
|
|
|
| Re: New shop lights [message #272155 is a reply to message #272154] |
Tue, 17 February 2015 08:28  |
rcjordan
Messages: 1913
Registered: October 2012
Location: Elizabeth City, North Car...
Karma: 1
|
Senior Member |
|
|
That's a good plan. In a year or two, there'll be cheap LED edison base bulbs. I gut/scrap fluorescent fixtures whenever possible now since T12 lamps and ballasts are phasing out. Not always possible in some commercial troffer installations, though, mostly due to aesthetics (mixed Kelvin).
SOLD 77 Royale Coachmen Side Dry Bath
76 Birchaven Coachmen Side Wet Bath
76 Eleganza
Elizabeth City, NC
|
|
|
|
| Re: New shop lights [message #272160 is a reply to message #272154] |
Tue, 17 February 2015 09:59 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
|
Senior Member |
|
|
kerry pinkerton wrote on Tue, 17 February 2015 08:18I have 40-50 florescent light fixtures in my shop. It seems that wherever I want to work, the ballast or bulb in that area is bad and I have to muck around with it or work in the dark. Ballasts are expensive and the covers are a pain to get off. Plus I have to shut off the power to the rest of the lights and change it in the dark with a plug in light, I'm DONE I tell you! DONE!
Moving forward, I'm going to remove the fixture and wire up a couple porcelain screw in fixtures. These accept the 100W equivalent twisty bulbs that just screw in and can be changed with a light pole without even getting a stepstool. Ballasts and tubes are expensive and the twisty bulbs are actually considerably cheaper and put out ALMOST as much light.
http://www.gmcmhphotos.com/photos/misc/p57265-new-shop-lights.html
Yep - and if you have a spot you want brighter just screw in a larger CF. I have seen them as high as 300W equivalent. You can also use the two bulb adapter "Y".
http://www.gmcmhphotos.com/photos/barn-project/p42539-barn-ceiling-project.html
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
|
|
|
|
| Re: [GMCnet] New shop lights [message #272162 is a reply to message #272154] |
Tue, 17 February 2015 09:51 |
GMC.LES
Messages: 505
Registered: April 2014
Karma: -2
|
Senior Member |
|
|
Kerry,
I'm having the same problem with the tubes in my shop as well as those in my unheated warehouse. In the cold it takes a bit for the lights to warm up, and ballast/tube life span is drastically shortened when used under these conditions.
I'm starting to convert my shop to surface mount flat panel LED units from China. I purchased 4 small units to try and they are fairly bright for the size. The way I see it, CF light bulbs are on their way out almost as fast as the incandescents they replaced. CF bulbs also don't do any better in the cold than the tube fluorescents. Buying direct from China in bulk, the flat panel LEDs are reasonably priced. I'm going to need somewhere around 30-40 units to fully convert the shop and the warehouse. I chose the flat panel fixtures because there is virtually nothing to bump and break when moving large items around the shop. They are also easy to keep clean.
I must add this. Not all the household LED lights are created equal. Some are instant on, some are dimmable, while others can take up to 2-3 seconds to light up. The colour temp and lumen output also appears to be "estimated" rather than a consistent science. Clarify specs with the vendor before buying, and you should still buy one or two test pieces before making a larger purchase. For the most part. LED lumen output per Watt of power consumption is similar to the CF bulbs, with LEDs being slightly more efficient.
Les Burt
Montreal
'75 Eleganza 26'
The EWIP (Eternal Work In Progress)
> On Feb 17, 2015, at 9:18 AM, Kerry Pinkerton wrote:
>
> I have 40-50 florescent light fixtures in my shop. It seems that wherever I want to work, the ballast or bulb in that area is bad and I have to muck
> around with it or work in the dark. Ballasts are expensive and the covers are a pain to get off. Plus I have to shut off the power to the rest of the
> lights and change it in the dark with a plug in light, I'm DONE I tell you! DONE!
>
> Moving forward, I'm going to remove the fixture and wire up a couple porcelain screw in fixtures. These accept the 100W equivalent twisty bulbs that
> just screw in and can be changed with a light pole without even getting a stepstool. Ballasts and tubes are expensive and the twisty bulbs are
> actually considerably cheaper and put out ALMOST as much light.
>
>
> http://www.gmcmhphotos.com/photos/misc/p57265-new-shop-lights.html
> --
> Kerry Pinkerton
>
> North Alabama, near Huntsville,
>
> 77 Eleganza II, "The Lady", 403CI, Manny Brakes, 1 ton, tranny also a 76 Eleganza to be re-bodied as an Art Deco car hauler
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
|
|
| Re: [GMCnet] New shop lights [message #272165 is a reply to message #272154] |
Tue, 17 February 2015 10:05 |
powwerjon
Messages: 849
Registered: March 2013
Karma: -2
|
Senior Member |
|
|
Kerry,
When I built my new pole building and shop about 10 years ago I went with the standard base 100 w twisty bulbs in areas where the ceilings were 8 foot or less and I also used the aluminum reflector to focus the light down from a portable work light, just the reflector not the socket and clamp. Provides a more even distribution of the light. I also use only the daylight colored bulb as it is a whiter light and gives more true colors. I have only 2 regular florescent in the wood shop and that is where the roll up door is and one over the radial arm saw. The Reflectors come in 2 sizes I will call small and large, I use the large on the 200W and smaller reflector on the 100W.
or
http://tinyurl.com/q8cfngz
For the main shop area where the ceilings are 14 foot I space the lights 8 feet apart in and I use the 200W bulbs again in daylight only with a reflector. I wish I was home so I could take some better pictures on the layout. Notice that the light is very even and bright. No flash used in these pictures.
http://www.gmcmhphotos.com/photos/general-pictures/p46877-gmc-stretch-maintenance.html
When I get home I will post a album of the shop lighting. It is inexpensive as compared to the fixtures and 4’ bulbs.
J.R. Wright
30' Buskirk Stretch
Michigan
On Location in Tucson
> On Feb 17, 2015, at 7:18 AM, Kerry Pinkerton wrote:
>
> I have 40-50 florescent light fixtures in my shop. It seems that wherever I want to work, the ballast or bulb in that area is bad and I have to muck
> around with it or work in the dark. Ballasts are expensive and the covers are a pain to get off. Plus I have to shut off the power to the rest of the
> lights and change it in the dark with a plug in light, I'm DONE I tell you! DONE!
>
> Moving forward, I'm going to remove the fixture and wire up a couple porcelain screw in fixtures. These accept the 100W equivalent twisty bulbs that
> just screw in and can be changed with a light pole without even getting a stepstool. Ballasts and tubes are expensive and the twisty bulbs are
> actually considerably cheaper and put out ALMOST as much light.
>
>
> http://www.gmcmhphotos.com/photos/misc/p57265-new-shop-lights.html
> --
> Kerry Pinkerton
>
> North Alabama, near Huntsville,
>
> 77 Eleganza II, "The Lady", 403CI, Manny Brakes, 1 ton, tranny also a 76 Eleganza to be re-bodied as an Art Deco car hauler
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
| Re: New shop lights [message #272166 is a reply to message #272154] |
Tue, 17 February 2015 10:14 |
rcjordan
Messages: 1913
Registered: October 2012
Location: Elizabeth City, North Car...
Karma: 1
|
Senior Member |
|
|
Les, got a link for your china flat panels?
SOLD 77 Royale Coachmen Side Dry Bath
76 Birchaven Coachmen Side Wet Bath
76 Eleganza
Elizabeth City, NC
|
|
|
|
| Re: [GMCnet] New shop lights [message #272175 is a reply to message #272166] |
Tue, 17 February 2015 12:29 |
GMC.LES
Messages: 505
Registered: April 2014
Karma: -2
|
Senior Member |
|
|
The ones I have at the moment came from eBay last fall. These units have a cast aluminum housing that makes them quite sturdy in a rough environment. I paid about 95$ for 4 units shipped from a U.S. Address. They are rated at 21w consumption & 1880 lumens, but I doubt the lumen rating. More like a 1300-1500 lumen unit. They have a horrible 2 second delay before lighting up which is ok in a location where the lights are on all day.
I installed two of these fixtures temporarily in our laundry room and was happy with the amount of light they produced. It was better than what a single 100w incandescent produced previously. This was probably more due to the way light is dispersed from two separate fixtures rather than the original single fixture. Less shadows.
I'm now looking for something a bit larger/brighter, but similar in construction. I need somewhere around 40 units to replace my 25 year old tube fixtures in the warehouse. I hate having to climb up to a 12ft ceiling to fiddle with the cranky old fixtures. The long life of LEDs will be well appreciated. Cleaning is as easy as passing a dust mop over the surface once a year. Something that can be done from the floor in 5 minutes with a long pole.
Here is a link to the exact same units I bought, but from a different seller.
http://m.ebay.ca/itm/141565104923
I purchased the 21w square units.
When I find a vendor with the type of lights I'm looking for, I'll gladly share the info if anyone is interested.
Les Burt
Montreal
'75 Eleganza 26'
The EWIP (Eternal Work In Progress)
> On Feb 17, 2015, at 11:14 AM, RC Jordan wrote:
>
> Les, got a link for your china flat panels?
> --
> 77 Royale Coachmen Side Dry Bath
> 76 Birchaven Coachmen Side Wet Bath
> Elizabeth City, NC
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
| Re: [GMCnet] New shop lights [message #272178 is a reply to message #272175] |
Tue, 17 February 2015 14:09 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
|
Senior Member |
|
|
Costco has a 4' LED on sale for $29 that puts out a lot of light. It looks like a typical 4' shop light.
One of the issues with CFL's is the warm up time. In my shop where I have F12 florescent fixtures, I also mounted porcelain keyless fixtures and have them separately switched. I use LED's in them which are instant on so that the main lights don't have to be used unless someone is working and needs the extra light. Works great.
Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
|
|
|
|
| Re: New shop lights [message #272185 is a reply to message #272154] |
Tue, 17 February 2015 17:07 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
|
Senior Member |
|
|
CFLs are so ninetys and so bad environmentally as you throw away electronics with each burnout. LED Hi Bays at this point in time. Or Bigass Fsns has nice stuff
John Lebetski
Woodstock, IL
77 Eleganza II
|
|
|
|
|
|
| Re: New shop lights [message #272190 is a reply to message #272154] |
Tue, 17 February 2015 18:23 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
|
Senior Member |
|
|
Kerry, I did that mod several years ago when the florescents in my garage died. $2 fixtures from Lowes, bought five of the, I also have a pair of 300W halogen fixtures on drop cords. I have to watch where I out them - they get quite hot - but I can see what the hell I'm doing with them.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
|
|
|
|
| Re: New shop lights [message #272203 is a reply to message #272154] |
Tue, 17 February 2015 19:26 |
phil
Messages: 24
Registered: July 2012
Location: Stevensville, Montana
Karma: 1
|
Junior Member |
|
|
Might want to look into induction lighting. Supposedly a life of 100000 hrs. Originally invented by Tesla.
Thanks,
Phil
'76 Eleganza II
Stevensville, Mt.
Montana-where Californians move to.
|
|
|
|
| Re: New shop lights [message #272223 is a reply to message #272154] |
Wed, 18 February 2015 00:37 |
Gatsbys' Cruiser
Messages: 91
Registered: August 2014
Location: Illinois
Karma: 0
|
Member |
|
|
I got onto the LED train late but I have been experimenting.
First, let me say, that pic with the barn and the lights, you should get more light reflection if you put a 2x2 foot white reflector on the ceiling. Those bulbs are sending a lot of light up to the dark ceiling and there is not much bounce back.
I have experimented with those twisty florescents vs the incandesants. There is a power difference, less used with the incans. But you have to watch the colors unless you aren't concerned about that.
Recently I have been wanting to play with those LED strings. They come in handy 3 led modules and are connected together in a string. They are the perfect size to put a few in the GMC lighing fixtures, they are 12 volt. If you want it brighter, put in more modules.
Now, not all LED lights are created equal. I have found these LED strings at a couple places but I found the best price on Amazon.
These LEDs are flat, no lens over the LED element
http://www.amazon.com/gp/product/B00BG4T6EU/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
These LEDs have a lens over the LED element, better than the above LED
http://www.amazon.com/gp/product/B00EC0I6GE/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1
Unfortunately, they don't tell you much about them in the ad. I tried two versions, a string for about 20 bucks and a string that I think I paid 27. ( Warning, my prices may not match, they seem to change all the time ) The strings are both about 20 feet long I think.
The difference, the cheaper string is not as bright as the super brite string for 27.
I have tried putting them in some outside lighting and they work very well. they are 12vdc and the LED strip is sealed in epoxy so they are pretty weather tight.
They come with a wire between the modules, the length of the wire is from 3 to 6 inches depending on the manufacturer. they have stickum on the backs of the module body to stick on a surface. Generally, the LEDs run pretty low current which means saving money. BUT, The SUPER HIGH BRIGHT LEDs run high currents and you can tell if you have one because you have to have a heat sink on it to keep it cool.
Last Fall, we were having some power outages way too often and one event we were out for a week. I took a short length of the LED lights and put them on a relay which was plugged in the walloutlet. I connected a battery power source to the really and to the leds so if the lights went out, the LEDS came on...... SURE ENOUGH, had a power outage and the LEDs came on... Lasted a couple days.... Just an idea to throw out there since RADIO CELL PHONE SHACK is going out of business and I believe they still sell relays with 120vac coils.... lolol...
I ended up using the cheaper lights to put under the kitchen cabinets to light the countertop, BRILLIANT, plenty of light for that purpose.
Just what I did
|
|
|
|
| Re: New shop lights [message #272225 is a reply to message #272154] |
Wed, 18 February 2015 10:16 |
 |
SeanKidd
Messages: 747
Registered: June 2012
Location: Northern Neck Virginia
Karma: 4
|
Senior Member |
|
|
Let me preface my comment, I am a certified lighting professional and have managed the installation of millions of energy savings retrofits. We no longer specify induction technology, despite manufacturers claims of 200k hour lamp life and 100k hour radio life (induction works on radio waves) and there is no cathode heaters in the lamp, ther are still suseptable to vibration, the helix of the Lincoln Tunnel in NJ was retrofit 3 years ago, and starting to see failures. LED is king.
Currently I am performing lighting upgrades for some major landmarks, all LED with smart technology (think 1984) cameras, seismic, gunshot detection, parking control, etc.
We use LumaVue LED, 4' lamps, remove the ballast and run 120v to the socket. Be sure to check it is nor a shunted socket. Otherwise you will need to replace the socket as well (some instant Start fluorescent technology uses a single wire to a socket and either ther is a jumper or integral connection to the other "pin". Applying 120v to this type of socket creates a dead short.
I like the 5000k translucent lens, but the clear lens is ok if you have a Lind on the fixture, bare exposed LED chip on board is glare. Be careful choosing a lamp, older led drivers hum or buzz. You get what you pay for.
Sean and Stephanie
73 Ex-CanyonLands 26' #317 "Oliver"
Hubler 1-Ton, Quad-Bags, Rear Disc, Reaction Arms, P.Huber TBs, 3.70:1 LSD Honda 6500 inverter gen.
Colonial Travelers
|
|
|
|
| Re: [GMCnet] New shop lights [message #272229 is a reply to message #272225] |
Wed, 18 February 2015 10:34 |
bdub
Messages: 1578
Registered: February 2004
Location: Central Texas
Karma: 5
|
Senior Member |
|
|
Thanks for the insight, Sean. What is the cost and where can we buy them?
bdub
On Wed, Feb 18, 2015 at 10:16 AM, Sean Kidd wrote:
> ... snip ...
> We use LumaVue LED, 4' lamps, remove the ballast and run 120v to the
> socket. Be sure to check it is nor a shunted socket. Otherwise you will
> need to replace the socket as well (some instant Start fluorescent
> technology uses a single wire to a socket and either ther is a jumper or
> integral
> connection to the other "pin". Applying 120v to this type of socket
> creates a dead short.
>
> I like the 5000k translucent lens, but the clear lens is ok if you have a
> Lind on the fixture, bare exposed LED chip on board is glare. Be careful
> choosing a lamp, older led drivers hum or buzz. You get what you pay for.
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
bdub
'76 Palm Beach/Central Texas
www.bdub.net
www.gmcmhphotos.com
www.gmcmotorhomemarketplace.com
www.gmcmhregistry.com
www.facebook.com/groups/classicgmcmotorhomes
www.facebook.com/groups/gmcmm
|
|
|
|
| Re: [GMCnet] New shop lights [message #272230 is a reply to message #272225] |
Wed, 18 February 2015 10:35 |
GMC.LES
Messages: 505
Registered: April 2014
Karma: -2
|
Senior Member |
|
|
Sean,
How do the LED 4' tubes compare (light output wise) to the T8 &T12 tubes they replace? I've been looking at several different LED tube replacements and so far haven't been impressed with the light output. I'm hard to please in this area as I've played with overdriven fluorescents for my aquariums and was impressed with the amount of light output. Of course life span and heat become a problem with overdriven fluorescents. Not something I would do for my warehouse lighting.
Les Burt
Montreal
'75 Eleganza 26'
The EWIP (Eternal Work In Progress)
> On Feb 18, 2015, at 11:16 AM, Sean Kidd wrote:
>
> Let me preface my comment, I am a certified lighting professional and have managed the installation of millions of energy savings retrofits. We no
> longer specify induction technology, despite manufacturers claims of 200k hour lamp life and 100k hour radio life (induction works on radio waves) and
> there is no cathode heaters in the lamp, ther are still suseptable to vibration, the helix of the Lincoln Tunnel in NJ was retrofit 3 years ago, and
> starting to see failures. LED is king.
> Currently I am performing lighting upgrades for some major landmarks, all LED with smart technology (think 1984) cameras, seismic, gunshot detection,
> parking control, etc.
>
> We use LumaVue LED, 4' lamps, remove the ballast and run 120v to the socket. Be sure to check it is nor a shunted socket. Otherwise you will need to
> replace the socket as well (some instant Start fluorescent technology uses a single wire to a socket and either ther is a jumper or integral
> connection to the other "pin". Applying 120v to this type of socket creates a dead short.
>
> I like the 5000k translucent lens, but the clear lens is ok if you have a Lind on the fixture, bare exposed LED chip on board is glare. Be careful
> choosing a lamp, older led drivers hum or buzz. You get what you pay for.
>
>
>
> --
> Sean and Stephanie
> 73 Ex-CanyonLands 26' #317 "Oliver"
> Hubler 1-Ton, Quad-Bags, Rear Disc, Reaction Arms, P.Huber TBs, 3.70:1 LSD Honda 6500 inverter gen.
>
> Colonial Travelers
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
| Re: New shop lights [message #272246 is a reply to message #272154] |
Wed, 18 February 2015 14:46 |
|
SeanKidd
Messages: 747
Registered: June 2012
Location: Northern Neck Virginia
Karma: 4
|
Senior Member |
|
|
The 18w LumaVue lamps I used on my last project emit 1890 lumens, compared to the mean lumens of a typical F32T8 with a standard power ballast at about 3000 lumens.
There is a difference between photopic and scotopic light, traditional fluorescent is photopic, wheras LED is Has a high Scotopic wavelength output...
http://www.visual-3d.com/Education/LightingLessons/Documents/PhotopicScotopiclumens_4%20_2_.pdf
In laymens terms, Human perception, LED looks brighter. Then you need to take into account that a traditional phosphor tube emits light in 360 degrees, a lot of which gets lost as scatter within a fixture. Most luminaire (fixture) are only 60-70% efficacy for producing usable lumens, this is why the lamp gets smaller...old t-12 lamps are 1 1/2 " diameter, t-8 is one inch, t-5 is 5/8 (T-n =1/8) the thinner the diameter, the better a good reflector can direct the lumens out of the fixture.
That being said, LED is considered "point source" lighting and all the lumens are emitted in one direction, so a lumen comparison is deceiving.
Sean and Stephanie
73 Ex-CanyonLands 26' #317 "Oliver"
Hubler 1-Ton, Quad-Bags, Rear Disc, Reaction Arms, P.Huber TBs, 3.70:1 LSD Honda 6500 inverter gen.
Colonial Travelers
|
|
|
|
| Re: [GMCnet] New shop lights [message #272257 is a reply to message #272246] |
Wed, 18 February 2015 17:01 |
GMC.LES
Messages: 505
Registered: April 2014
Karma: -2
|
Senior Member |
|
|
Sean,
So you are saying that one 4' LED LumaView tube is similar in perceived light output to one F32T8 tube? That is impressive. I'll have to look into trying some.
Les Burt
Montreal
'75 Eleganza 26'
The EWIP (Eternal Work In Progress)
> On Feb 18, 2015, at 3:46 PM, Sean Kidd wrote:
>
> The 18w LumaVue lamps I used on my last project emit 1890 lumens, compared to the mean lumens of a typical F32T8 with a standard power ballast at
> about 3000 lumens.
>
> There is a difference between photopic and scotopic light, traditional fluorescent is photopic, wheras LED is Has a high Scotopic wavelength
> output...
>
> http://www.visual-3d.com/Education/LightingLessons/Documents/PhotopicScotopiclumens_4%20_2_.pdf
>
> In laymens terms, Human perception, LED looks brighter. Then you need to take into account that a traditional phosphor tube emits light in 360
> degrees, a lot of which gets lost as scatter within a fixture. Most luminaire (fixture) are only 60-70% efficacy for producing usable lumens, this is
> why the lamp gets smaller...old t-12 lamps are 1 1/2 " diameter, t-8 is one inch, t-5 is 5/8 (T-n =1/8) the thinner the diameter, the better a good
> reflector can direct the lumens out of the fixture.
>
> That being said, LED is considered "point source" lighting and all the lumens are emitted in one direction, so a lumen comparison is deceiving.
>
> --
> Sean and Stephanie
> 73 Ex-CanyonLands 26' #317 "Oliver"
> Hubler 1-Ton, Quad-Bags, Rear Disc, Reaction Arms, P.Huber TBs, 3.70:1 LSD Honda 6500 inverter gen.
>
> Colonial Travelers
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
| Re: [GMCnet] New shop lights [message #272260 is a reply to message #272246] |
Wed, 18 February 2015 17:23 |
Kingsley Coach
Messages: 2691
Registered: March 2009
Location: Nova Scotia Canada
Karma: -34
|
Senior Member |
|
|
Sean
The Scotsman in me is curious...what are these things(18w LumaVue lamps)
costing?? Ball park is fine.
Tks
Mike
On Wed, Feb 18, 2015 at 4:46 PM, Sean Kidd wrote:
> The 18w LumaVue lamps I used on my last project emit 1890 lumens, compared
> to the mean lumens of a typical F32T8 with a standard power ballast at
> about 3000 lumens.
>
> There is a difference between photopic and scotopic light, traditional
> fluorescent is photopic, wheras LED is Has a high Scotopic wavelength
> output...
>
>
> http://www.visual-3d.com/Education/LightingLessons/Documents/PhotopicScotopiclumens_4%20_2_.pdf
>
> In laymens terms, Human perception, LED looks brighter. Then you need to
> take into account that a traditional phosphor tube emits light in 360
> degrees, a lot of which gets lost as scatter within a fixture. Most
> luminaire (fixture) are only 60-70% efficacy for producing usable lumens,
> this is
> why the lamp gets smaller...old t-12 lamps are 1 1/2 " diameter, t-8 is
> one inch, t-5 is 5/8 (T-n =1/8) the thinner the diameter, the better a good
> reflector can direct the lumens out of the fixture.
>
> That being said, LED is considered "point source" lighting and all the
> lumens are emitted in one direction, so a lumen comparison is deceiving.
>
> --
> Sean and Stephanie
> 73 Ex-CanyonLands 26' #317 "Oliver"
> Hubler 1-Ton, Quad-Bags, Rear Disc, Reaction Arms, P.Huber TBs, 3.70:1 LSD
> Honda 6500 inverter gen.
>
> Colonial Travelers
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
Life is too short to hold a grudge; slash some tires and call it even !
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
Goto Forum:
Current Time: Wed Oct 02 23:37:38 CDT 2024
Total time taken to generate the page: 0.01078 seconds
|
GMCforum
Search
Help
Register
Login
Home
