i have a 8ft flourecent bulb above my work bench the bulbs are the 2 pin type,thier starting to flicker and not light,regularly.if you tap or pin them sometimes they will work,most times not..going to buy a new light to repkace it,considering a led light.i see on rural kings site they have led lights from 4500 to 10,000 lumens,all 4 ft ones.my question is will 2 5000 lumen lights be better than 1 10,000 lumen light.will 2 4500 lumen lights cover more area than 1 10,000 light would ???
- Thread starter 88-1175
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Flannelman
Member
All things being equal the 2 5000 lumen units should match the 10,000 unit if they are the same design. Personally I am over dealing with ballast and tubes. You can go to costco and get nice LED units for $20 on sale. They also have motion activated ones so you can have a light come on when you sit down to work at the bench. For the money anymore I'd rather put up Leds. If I have to do maintenance I'll just change florescent unit out so I don't have to touch it again.
Steve@Advance
Well-known Member
I just went through this with a couple of fixtures in the shop.
I have 2 F96T12HO 2 lamp fixtures. The ballasts were leaking, decision time.
Did some calculating, each lamp makes 8900 lumens. That's 17,800 per fixture.
The replacement LED lamps I found were 3600 lumens each.
Though the LED's are more efficient, I needed the light output that the original lamps made. I didn't try the LED's, so I can't say they would not have been enough. One advantage they have is the light is directional, where the fluorescent tubes are omnidrectional, some light is lost upward.
But, lumens are lumens. Depends on your needs, just be sure you have sufficient light when done, calculate the cost of the replacement, consider the energy savings.
In my situation, I needed the light output, the old fixtures were in good shape, well built, the lamps were still good. I ended up going back with new electronic ballasts for about $40 each.
I have 2 F96T12HO 2 lamp fixtures. The ballasts were leaking, decision time.
Did some calculating, each lamp makes 8900 lumens. That's 17,800 per fixture.
The replacement LED lamps I found were 3600 lumens each.
Though the LED's are more efficient, I needed the light output that the original lamps made. I didn't try the LED's, so I can't say they would not have been enough. One advantage they have is the light is directional, where the fluorescent tubes are omnidrectional, some light is lost upward.
But, lumens are lumens. Depends on your needs, just be sure you have sufficient light when done, calculate the cost of the replacement, consider the energy savings.
In my situation, I needed the light output, the old fixtures were in good shape, well built, the lamps were still good. I ended up going back with new electronic ballasts for about $40 each.
I replaced all the double 4' florescent fixtures with 4' double LED's in my shop Wow! is all I can say the difference is amazing. The best thing for me is out in the shop when it's really cold these LED's instantly light, at first jumped me being so used to the very slow to light florescents.
BarnyardEngineering
Well-known Member
- Location
- Rochester, NY
LEDs have other benefits aside from cost savings, you know. First one is MORE LIGHT. Second one is they work in the cold.
They're getting pretty cheap now too. You can spend $40 on a quality 4ft fluorescent light fixture, but you can also get nice LED units for the same money or less.
They're getting pretty cheap now too. You can spend $40 on a quality 4ft fluorescent light fixture, but you can also get nice LED units for the same money or less.
showcrop
Well-known Member
I am custodian of my church and have been working through the light changeover for some four years since I bought a dozen special screw in bulbs from China. Six months ago I finally got some good ones and changed all the other 50 of that kind. We have three different types of four foot tube fixtures. I replaced six complete troffer fixtures. That is a lot of work and expensive. Most recently I tried ballast bypass. You get the bulbs that make electrical connection at one end only. Then disconnect all the wires to the ballast and connect the hot to one side of the bulb tombstone, and the neutral to the other. You purchase only bulbs and wire nuts and it is quick and easy. GO BALLAST BYPASS!
A lumen is a lumen. 10,000 lumens or 2 times 5,000 lumens is the same light. However, one thing to remember when comparing LED's to fluorescents, the lumens measured from the LED is the light you are getting out of the light fixture, the light with fluorescent is the lumens are the lumens you are getting from the lamp, then 25% to 35% of that light can get lost getting it our of the fixture. So an LED fixture with the same lumens as a fluorescent will seem brighter because it is more efficient at getting the light where you need it.
rustyfarmall
Well-known Member
I got rid of the 2, 4 foot flourescents over my workbench, and replaced them with 3 CFL flood lamps. Much better and brighter. LEDs are too costly, and not very dependable.
Texasmark1
Well-known Member
I had my shop built in 2005 with regular fluorescent. When they started to die I replaced with the cold tolerant. A couple of days ago I bought 2 each: "Westernpowers 4 Pack 42W LED Shop Light Garage Workbench Ceiling Lamp Linkable", on ebay, $149.60 with free shipping. Should get them in 2 days. No more bulb replacements, nor dim lights in the winter for me. I'm sold. LED is here to stay, getting cheaper by the day and a great light.
Don't overlook the little 2 AA battery powered single LED flashlights with the big reflector, available today. A real light for a song. That technology has really made leaps from it's original 13 separate LEDs to this.
Don't overlook the little 2 AA battery powered single LED flashlights with the big reflector, available today. A real light for a song. That technology has really made leaps from it's original 13 separate LEDs to this.
Texasmark1
Well-known Member
Forgot to sweeten the pot: 4ft 42watt 5700K Aluminum Housing Linear LED ETL.
Texasmark1
Well-known Member
Yesterday I got the lights I quoted herein. WOW. Super bright. Very happy camper.
K Effective
Well-known Member
We've been replacing the 200 four-bulb fluorescent tube fixtures at the parochial high school I attended. The device of choice is a retrofit unit- the troffer or metal box stays the same, but all the electrical inside is removed- wiring, ballasts, tombstones, all of it. The replacement LED unit has three strips molded together, and is held in place by two self-drilling screws. It then connects to the 120V hot and neutral, even provides those new orange plastic quick connect wire connectors, so any replacement should literally be plug-and-play. Once proficient, I can retrofit a unit in under ten minutes each. The only ones we replaced the troffer(metal box) were to install battery backup lighting at entry ways- with LED the whole fixture can be run on a battery, just not the retrofit units.
I have four, four-bulb fixtures in my shop area, and plan to retrofit them with this kit, but have yet to complete the school project, much less get to my own projects...
I have four, four-bulb fixtures in my shop area, and plan to retrofit them with this kit, but have yet to complete the school project, much less get to my own projects...
Speaking of LED flashlights, I've got about a half dozen mini-mag lights. Some are the older style bulbs and a couple are LED. Well, I'd been using one of the LED ones while working inside my kitchen cabinets, doing some plumbing. Doggone thing kept going out and I'd twist it off and then in a few seconds I'd turn it on and it would work for a little bit. Googling info, I found that they shut off if the battery voltage drops below a certain level. Being used to a flashlight growing dim with a weak battery, not shutting off, I just assumed the batteries were ok. Changed them and voila, it worked again. This is a frustrating feature as you could be using one in a critical, dark, area (attic, crawl space) not knowing the batteries are on their last legs.
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