Questions tagged [fluorescent]

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19
votes
7answers
4k views

How to deal with broken compact fluorescent (and its mercury) without breaking the bank?

We're now out of the compact fluorescent era, fortunately, but we wound up with 3 or 4 broken CF bulbs from somebody not being careful with a box of them in the garage ... We're moving and I want to ...
5
votes
1answer
1k views

How do I label fluorescent fixtures converted to LED?

I am going to replace some regular fluorescent tubes that are about to burn out with LED ones and would like to add a sticker inside the fixture to advise a future owner to not install regular ...
5
votes
2answers
1k views

LED T8 tubes: plug-and-play or direct-wire?

I want to install some good bright LED lights in a shop. I have access to some nice fluorescent-type fixtures for cheap or free (two 4-ft T8 tubes), so I want to just use them with LED replacement ...
4
votes
5answers
440 views

Measuring frequency of a fluorescent light source?

I noticed that my eyes feel tired with certain fluorescent lights in my office. I read that low frequency fluorescent lights can make eyes tired. Is there a tool I can purchase to measure the ...
4
votes
3answers
15k views

Changing fluorescent tube: how many degrees to turn?

I have a broken fluorescent tube (housing is intact, but it flickers instead of lighting up properly) that I have to change (bottommost type in the image). I can turn it about 20 degrees, but it ...
3
votes
1answer
2k views

How to safely wire fluorescent lighting with three prong plug on the ceiling?

Recently moved in to a new workspace with some very funky wiring. Basically, there is a flourescent light installed overhead with a three prong plug. That plug goes to a power strip also attached to ...
3
votes
3answers
4k views

What could cause fluorescent lights to sporadically not come on?

My kitchen has 9 26W fluorescent can lights (not CFLs - they have external ballasts). Often when I turn the switch on, particularly after they've been off for at least several minutes, about 4 of ...
3
votes
1answer
1k views

Shock when Installing Fluorescent Bulb 50VAC between frame and GLASS of Lamp - New Ballast Installed

I have a ballast that we are replacing in a church. There are approximately 12 dual lamp T12 Fixtures in parallel drops. The fixtures are all in line -- but L1, Neutral and Ground are parallel drops. ...
2
votes
1answer
681 views

How to bypass the ballast on this fluorescent fixture?

I have some fluorescent fixtures in my basement that I would like to convert to LED, using bulbs that require a ballast bypass. However, these fixtures don't have a centrally mounted "black box" ...
2
votes
2answers
7k views

My florescent lights need a shake or a hit to work

I have a Wave Twin Fluorescent Ceiling Light that doesn't light up in general. If I switch it on, it only lights up a very small part at one end. I need to shake it or give it a hit a couple of times ...
2
votes
3answers
87 views

Name for tombstone-holder parts?

What are the names of the metal photographed parts? The tombstones are inserted to clarify function. I would like to order more of these metal parts, however, I do not know the terminology to Google ...
2
votes
1answer
824 views

Why do LED retrofit instructions say to leave the ballast in the fixture?

I'm looking at retrofitting fluorescent fixtures in my basement for single-ended LED tubes. The electrical and wiring concepts I have down; I could probably do it with my eyes closed (but anyone ...
2
votes
2answers
1k views

Replacement Options for T12 Four light fluorescent light fixture

I have a good number of fluorescent light fixtures that are old the ballasts are going out. There are two ballasts per fixture. The ballasts are expensive when factoring in labor cost. Covering to T8 ...
2
votes
1answer
77 views

what is the likely cause of a single fluorescent tube not working in a light fixture with a ballast that supports two tubes?

So I've got a warehouse with many fluorescent tube fixtures. We are slowly transitioning piecemeal to LED as we run out of replacement ballasts and bulbs. I've got a fairly simple troubleshooting ...
2
votes
2answers
3k views

Run a fluorescent fixture with fewer lamps?

I have some 3-lamp recessed fluorescent fixtures that are too bright. Can I remove one of the tubes and run them just with two lamps? Will that hurt the ballast or the remaining tubes? These are T8 ...
2
votes
2answers
87 views

How to remove cables from the Philips ballast for fluorescent lamps?

I have a few HF-Performer III TL5 ballasts to to which I connected cables in past. Now I can't take them out http://www.lighting.philips.com/main/prof/lighting-electronics/fluorescent/fluorescent-...
2
votes
4answers
3k views

Does a fluorescent lamp that does not light up still draw power?

First of all, I am not a native English speaker, please forgive me. I recently rented the room I am currently living in. On the ceiling there are fluorescent fixtures like the picture below (I found ...
1
vote
2answers
246 views

Can a T8 bulb work with a T5 ballast?

What (if any problems) will happen if a T8 bulbs are used with T5 ballasts?
1
vote
4answers
407 views

How can I determine the color / temperature of my current fluorescent bulbs?

I intend to replace an old and large population of T12 flourescent lights with T8 LEDs: direct wiring. The ballasts are $15 a piece (2 required per fixture) and it would seem that a 4 X $10 direct ...
1
vote
2answers
3k views

Can I run a T5HO ballast with significantly lower wattage T5NO bulbs?

I gather this is generally possible, as long as bulbs draw less power than the ballast can provide, but are there limits on how low you can go? I currently have an electronic ballast for 1 or 2 54W ...
1
vote
2answers
333 views

Why do fluorescent lighting tombstones melt?

I am fixing the lighting in an older building and one of the plastic tombstones has melted. There are approximately 100+ tombstones and one has melted. A search found a forum discussion that ...
1
vote
3answers
3k views

Is a ballast required, or merely acceptable, for this Philips InstantFit LED tube?

Rather than replace a dead ballast in a fluorescent fixture, I've decided to simply bypass and move to LEDs. However, I think I may have grabbed the wrong kind of replacement tubes the other day in ...
1
vote
3answers
59 views

How to get a TL light working

I have a set of fluorescent tubes (2) in my kitchen and they both do not work (noticed while I came home). Normally one of the starters is broken and I replace it but this time both lights to not ...
1
vote
4answers
13k views

How do I choose the correct fluorescent ballast?

I have a fluorescent fixture which takes tubes. The fluorescent ballast has gone bad, or I want to upgrade to the latest. How do I select the correct ballast for my fixture?
1
vote
1answer
28 views

Systematic process to find replacement fluorescent T5 lamp holder

The goal is to replace a plastic T5 tombstones has melted. The side 'wings' fold-in so it can be 'dropped-into' the fixture. There are approximately 100+ tombstones and one has melted. Is ...
1
vote
2answers
312 views

Removing a surface-mounted shop light

In my garage, I have some surface-mounted (or flush-mounted) fluorescent shop lights. I would like to replace them with LED shop lights, instead. They are just plug-in lights, so the electrical part ...
1
vote
2answers
53 views

Fluorescent Lights Turning on Slowly

I have a Philips fluorescent light fixture in my kitchen. It was installed in the mid-1990s, so it uses an electronic fast-start ballast. The lights were not turning on at all, so I replaced the ...
1
vote
2answers
1k views

Replace A T5 Fluorescent to A T8 LED

I currently have a T5 Fluorescent Fixture which one socket broke. I got a great deal on LED Bulbs which are a direct replacement to T8 Fluorescent bulbs. Would I be able to reoutfit the fixture with ...
1
vote
1answer
535 views

Direct Wire LED: T12 Replacement

CONTEXT An older office's 4-foot T12's are to be replaced with direct wire LEDs because the ballast cost + labor can be avoided. The instructions indicate that the hot is wired to one end and the ...
1
vote
3answers
7k views

Fluorescent fixture won't stay lit

I have a two-bulb F28T5 light fixture that went out and replacing the bulbs with new ones did not fix it. So I replaced the ballast with a new one. The lights come on but go out within a second or so....
1
vote
3answers
639 views

I replaced my fluorescent light ballast but the bulbs turn off immediately

I changed the ballast on the florescent lights in the laundry room yesterday. Now this morning when I throw the switch they turn on then off immediately. Is this a loose wire connection? Should I go ...
1
vote
1answer
52 views

Trying to replace 1988 t12 w/ led 4ft bulbs

My question is this: I removed the t12 ballasts, and direct wired the 2 ends of the fixture, one to each wire coming from the box. I put in t8 LED bulbs. They don't light. They are Sylvania 5000k 32 w ...
1
vote
2answers
70 views

Power issues with old fluorescent lamp

I decided to repair an old fluorescent lamp cabinet I have but i am no electrician and have no idea how the actual system works. I bought a new lamp (T5) and a new starter so I just have to figure out ...
1
vote
1answer
51 views

Replace fluorescent lights with LED lights

Can I replace fluorescent lights (30W, 36" long - F30T12 H998) with LED lights?
1
vote
0answers
57 views

Can an F40T8 4ft ballast power an F36T8 2ft bulb?

I have some F36T8 2ft bulbs that I need to power, unfortunately the closest ballast I can locally find are rated for 4ft F40T8 bulbs. Can I still use them, or will it be a hazard?
1
vote
0answers
29 views

Hard wire into a recessed fluorescent can

Can I /or how can I hard wire a new ceiling hanging pendant into the existing fluorescent can in my dining room. I live in a building and have no access above. Upgrade Time
1
vote
0answers
51 views

Can I use a ballast that is rated for four 32W T8 bulbs with a different number of 15W T8 bulbs?

If so how might I figure out how many? I don't know how the math would apply in this situation.
0
votes
2answers
1k views

Are LED retrofit bulbs more resilient to ballast problems?

My office overhead lighting currently uses fluorescent bulbs. For ~5 minutes after turning them on, lights will flicker. I diagnose this as a weak ballast. If I insert LED retrofit bulbs into this ...
0
votes
1answer
296 views

Why new 32W circular fluorescent light bulbs keeps getting blown?

Recently one of my ceiling light's bulb just got blown after lasting for quite a few years. I tried to replace it with a new one and the moment I turned it on, the bulb would blink once quickly say ...
0
votes
2answers
734 views

ceiling surface mount fluorescent light question

I just picked up a great deal on some 4' fluorescent ceiling mount lights for my garage. Looking at the docs from the manufacturer, they state: MOUNTING Ceiling surface mount (HO and VHO units ...
0
votes
2answers
649 views

Fluorescent Without Fixture

I want to achive a very simple look with fluorescent lights. I want to hang a fluorescent tube from the ceiling with as little as possible. Was thinking maybe hanging them just in the cord to each end ...
0
votes
1answer
1k views

What is this knob on this fluorescent light fitting?

Recently I tried replacing a fluorescent bulb in my garage after it failed, upon fitting the new light it wouldn't turn on and there is this knob on the side (I have been told it may be something to ...
0
votes
2answers
80 views

Why does it take 20-30 seconds for a fluorescent tube to start?

One of the fluorescent lights in my apartment does nothing for long seconds or sometimes even minutes when turned on (then it surprises me when it suddenly comes on). It behaves as if there were some ...
0
votes
1answer
150 views

Can you wire a T12 fluorescent Strip light and a T8 fluorescent strip light together?

I have a 2FT Strip light and a 4FT strip light wired together in the kitchen. They are both T12 . I need to replace the 4FT one and I bought a cheap T12. However, I have to go back to the store ...
0
votes
1answer
982 views

How can I tell whether a fluorescent ballast is T8 or T12?

Is there a way to tell from a ballast's specifications (voltage, wattage, how many lamps it handles, etc.) whether it is a T8 or T12 ballast? Or do I need to look for the manufacturer's part number to ...
0
votes
2answers
626 views

Fluorescent light requires twist to start

I have a fluorescent light in my bathroom. It used to work fine, but then had issues with it not turning on. I replaced the tube, but it hasn't fixed the issue. I can get the light to come on if I ...
0
votes
3answers
474 views

How do I remove the T shaped metal device that is holding my fluorescent ballast cover on?

I'm trying to take the cover off of my fluorescent fixture, but I can't seem to figure out this fastener. I've tried rotating it to no effect.
0
votes
2answers
207 views

Fluorescent bulb shelf life

What is the expectation for unused fluorescent bulbs that are 1 year, 5 year and 10 years old? In general, do fluorescent bulbs appreciably degrade over the first 10 years? I am referring to tubes ...
0
votes
1answer
138 views

Why were both circular florescent tubes not working last night but are working this morning

We have 2 circular florescent ceiling light fixtures on a single switch. Last night neither bulb would come on. But this morning they are working fine. I had checked the circuit breaker, that was OK (...
0
votes
2answers
52 views

fluorescent lamp messing with voltage in the house

I got a cool lamp from a yard sale, its an arm mounted desk lamp that has a giant magnifying lens in the head and a circular fluorescent tube around it so its really nice for zooming in and ...