Questions tagged [fluorescent]
The fluorescent tag has no usage guidance.
67
questions
1
vote
1answer
24 views
Fluorescent lights sometimes don't turn on
I have two T12 double-ended G13 2-pin 4 foot fluorescent lights in my bathroom. They often (maybe 1/3 of the time) won't turn on, with a very slight glow in one corner, then usually turn on after an ...
1
vote
2answers
36 views
Two socket fluorescent lamp OFF switch hot / not working with single bulb
I have a two-socket fluorescent lamp. Initially only one light tube was inserted and it worked fine. At some point, it started to go off seconds after being turned on. I thought the tube went bad, so ...
1
vote
2answers
41 views
Fluorescent light fixture malfunction
A fluorescent light fixture in my house looks like the attached picture when I turn it on. I replaced the light tube, but no success. If I repeatedly turn it off and then on quickly, it eventually ...
0
votes
0answers
58 views
How to remove fluorescent bulb from a stuck rotary lock socket?
I'm trying to change a fluorescent bulb but it gets stuck when I try to turn it 90 degrees to remove it. The socket appears to be of rotary lock type, the same as the one in this question:
How to ...
1
vote
1answer
53 views
Replace fluorescent lights with LED lights
Can I replace fluorescent lights (30W, 36" long - F30T12 H998) with LED lights?
0
votes
1answer
36 views
Fluorescent Light issue
I have a 4 bulb light fixture which suddenly just went out. I checked and there was power to it. I changed all the bulbs in case one was bad and still nothing. So I purchased a new ballast and ...
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 ...
1
vote
2answers
69 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 ...
0
votes
2answers
81 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 ...
2
votes
3answers
110 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 ...
1
vote
2answers
332 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?
2
votes
2answers
119 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-...
0
votes
2answers
285 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
187 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 ...
1
vote
1answer
32 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
453 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 ...
2
votes
1answer
88 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 ...
4
votes
5answers
511 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 ...
1
vote
3answers
950 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 ...
0
votes
1answer
1k 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 ...
1
vote
2answers
388 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
0answers
67 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?
0
votes
2answers
1k views
How would I wire a motion sensor to a fluorescent light?
How would I wire this motion sensor to the fluorescent light? I’ve heard that not all motion sensors are created equal and it may shorten the lifespan of the bulbs or possibly the transformer but if ...
0
votes
2answers
724 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
1answer
85 views
fluorescent Tube F15 T8 Not working
I have a desk lamp that takes 2 fluorescent tubes F15 T8. The current tubes work but I wanted new ones. I just purchased new tubes and they don't work at all. Any idea what is the difference between ...
1
vote
3answers
4k 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 ...
0
votes
2answers
2k views
Fluorescent light wont work after replacing starter and bulb
I have 2 single bulb fluorescent lights that do not turn on after replacing the bulb and starter. What else could be preventing the light from turning on? ANy advice on what should I check? Thanks
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 ...
0
votes
0answers
39 views
Fluorescent fitting problem
I live in France.
I have just received a replacement twin fluorescent fitting to replace a unit that failed after 3 months. I have tested the new fitting on a bench, connecting live neutral and earth ...
0
votes
3answers
555 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.
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 ...
0
votes
1answer
2k views
Why don't my fluorescent lights work after a nearby lightning strike?
I was working in the basement during a thunderstorm, with two banks of fluorescent tube lights (like office lights) in two rooms on. Thunder pealed, power went out. Every so often there would be a ...
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
564 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
4answers
449 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 ...
0
votes
2answers
242 views
Installing single-ended LED in a pre-existing T-8 fixture with only one connection per side
I have a set of new LED bulbs which want hot & neutral connection at just one end of each bulb.
The fixture in question however is wired differently than I expected. It has just one wire per end....
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 ...
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.
...
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 ...
0
votes
1answer
154 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
1answer
339 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 ...
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 ...
0
votes
2answers
690 views
Fluorescent ceiling fan light single flash when switch turned on
I have a Hampton Bay CVT-54 ceiling fan and I'm seeing a very strange issue with the fluorescent ring light. When I flip light switch the light will flash momentarily then go dark. Flipping the light ...
2
votes
1answer
885 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 ...
0
votes
1answer
45 views
Another fluorescent light question
The fixtures are older T-12, 8', 2 lamp, single point ends. There are many at this location but this one is not working for me. First it wouldn't come on at all. I replaced the ballast with a new ...
0
votes
2answers
132 views
Heater fan causes fluorescent light to dim/flicker
While we were cleaning out a friend's garage I turned on a heater fan. I didn't take a good look at it but it has a digital display, thermostat, and I'm pretty sure it's a wire element type. It ...
1
vote
4answers
15k 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
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
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
2
votes
1answer
706 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" ...
