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37 votes

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

The $3000 cleanup was never a thing. It's an urban myth created from a political slander. The goal of the slander was to resist CFLs at any cost, both to resist government regulation generally, and ...
Harper - Reinstate Monica's user avatar
21 votes

Seeking LED replacement bulbs for the fluorescent lights in my basement

Executive Summary Save yourself a headache: remove the ballasts and rewire the fixtures to directly power LED bulbs designed to work without a ballast. Longer Version I had exactly the same problem: I ...
ssteinerX's user avatar
  • 331
16 votes
Accepted

Do T9 fluorescent light bulbs last longer if they are left on?

There are 2 parts to tube wear & tear Starts Starting a tube requires "striking an arc" across a cold tube. These are, after all, in the arc-discharge light family. This will cause a ...
Harper - Reinstate Monica's user avatar
11 votes

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

the epa says you can put it in the trash Next, check with your local government about disposal requirements in your area, because some localities require fluorescent bulbs (broken or unbroken) be ...
agentp's user avatar
  • 402
10 votes

Pull string on fluorescent light broke

Those switches are about $6 at your big box hardware or online store. Get one with wire leads instead of terminals.
NoSparksPlease's user avatar
9 votes

Seeking LED replacement bulbs for the fluorescent lights in my basement

I'd really rather not have to rewire or replace all the fixtures in my basement, but I've had zero luck finding an LED replacement bulb that works. Wait. Have you been trying different plug-and-play ...
Harper - Reinstate Monica's user avatar
8 votes

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

Here's the math to show that a few broken fluorescent bulbs don't pose a significant mercury hazard, and that you should clean it up the same as any other broken glass. A CFL contains 5 mg of mercury ...
Spencer Joplin's user avatar
8 votes

Do T9 fluorescent light bulbs last longer if they are left on?

The specifics will vary a lot depending on the particular lights. There are three components in a typical (non-CFL) fluorescent fixture: Ballast Starter Bulb Each of these can wear out, and at ...
manassehkatz-Moving 2 Codidact's user avatar
8 votes
Accepted

Retrofit Fluorescent Tube Fixture with LED Tubes

It's not going to work with these. I do a lot of fluorescent conversions - mostly from T12 to T8 since I like real fluorescent. I recognize those particular fixtures, with the molded-in tombstones and ...
Harper - Reinstate Monica's user avatar
6 votes
Accepted

How to bypass the ballast on this fluorescent fixture?

After reading Jimmy Fix-it answer I decided to give it a try to modify the Model 9000 fixture for installation of LED tubes in the Model 9000 fixture rather than throwing it away, and found the way to ...
HectorP's user avatar
  • 76
6 votes

Can a T8 bulb work with a T5 ballast?

It won't work right. It will overdrive the tube (or underdrive the tube) and you'd get short tube life. It may flicker horribly. It may not be able to strike. Basically the same things that ...
Harper - Reinstate Monica's user avatar
6 votes

Is it safe to use a 32W LED bulb in a ballast with a max bulb wattage rating of 32W?

First let's correct a misconception. Consider a normal screw-in Edison bulb that is 800 lumens. 800 what??? Exactly. What we care about is the brightness, which is 800 lumens. But for historical ...
Harper - Reinstate Monica's user avatar
5 votes
Accepted

How do I choose the correct fluorescent ballast?

You identify the tube type, then the ballast. The fixture decides the tube The fixture and its lampholders are going to decide the size of tube you can use. Within that, you may have some ...
Harper - Reinstate Monica's user avatar
5 votes

How to bypass the ballast on this fluorescent fixture?

That style has electronic ballasts (as opposed to magnetic) integrated into the fixture ends and will not be easily converted (if it can be converted at all). They are very inexpensive low-end type ...
Jimmy Fix-it's user avatar
5 votes

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

The second option but instead of landfill, take it to your local recycling facility (UK: household waste recycling centre) and put it in the "fluorescent light tubes" section.
RedGrittyBrick's user avatar
5 votes
Accepted

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

Interesting thing about being human is the brain is wired to see what it expects to see. It's hard to turn that off, even if you're a ship spotter or pilot. There is such a thing as LED bars which ...
Harper - Reinstate Monica's user avatar
5 votes

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

I can confirm Phillips InstantFit work with ONLY specific ballasts and do not work without ballasts. I tried with Utilitech lights and with ballast removed to no avail. I'm done with fluorescent ...
Bret's user avatar
  • 51
5 votes
Accepted

How do I get the fluorescent bulb out of this fixture?

It had clips on the inside of the cover. Managed to get a screwdriver underneath which freed the clips and then would slide off.
Grace Eleanor Hooper's user avatar
5 votes

Pull string on fluorescent light broke

This is a very easy repair if you have done ANY wiring. If not, watch some Youtube videos on properly installing wire nuts, and take clear "Before" photos!!!
Harper - Reinstate Monica's user avatar
5 votes

T12, 4ea 4ft lamps, 2 old ballasts. It appears two of the lamps aren't coming on. Sometimes the fixture flickers

Skip "what you can find at HD/Lowes." I've looked there, it's awful, and overpriced. Relamp with T8's and a nice 4-tube electronic ballast - programmed start by preference. You'll get longer ...
Ecnerwal's user avatar
  • 220k
5 votes

T12, 4ea 4ft lamps, 2 old ballasts. It appears two of the lamps aren't coming on. Sometimes the fixture flickers

If you want to stay with real fluorescent This answer is about staying with fluorescent. I do hundreds of fluorescent upgrades. You have good prospects any way you want to go. In most cases ...
Harper - Reinstate Monica's user avatar
5 votes

T12, 4ea 4ft lamps, 2 old ballasts. It appears two of the lamps aren't coming on. Sometimes the fixture flickers

If you want to convert to LED I personally find they are more efficient, but the reliability is hit-and-miss, and the light quality isn't naturally as high - many will cheerfully sell you sub-70 CRI ...
Harper - Reinstate Monica's user avatar
4 votes
Accepted

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

It's the ballast When old magnetic ballasts go bad, that's one of the things they do. I swear, I'm about ready to stick a logbook inside every fixture because I think most of our bulb replacements ...
Harper - Reinstate Monica's user avatar
4 votes

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

Direct wire. Worst case you have to change a lampholder. Plug-n-play doesn't allow a ballast, it requires a ballast! And of a specific type - if the fixture has the wrong type, you would have ...
Harper - Reinstate Monica's user avatar
4 votes

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

Ok it sounds like you are in the USA: Here is a wonderful article from https://www.epa.gov/cfl/cleaning-broken-cfl Abbreviated info: Sweep it up , not vacuum, seal it up - if your local government ...
Ken's user avatar
  • 5,413
4 votes

Measuring frequency of a fluorescent light source?

I personally have done this with a Greenlee clamp meter, a volt-meter with a Hz setting. I connected the meter to the terminals at the non-shunted end. Only do this with a Cat II or higher rated meter ...
Dan D.'s user avatar
  • 1,360
4 votes

Why do fluorescent lighting tombstones melt?

Keep that is the guess of some yo-yo's on a discussion forum, and even though it's an electrician forum, fluorescent internals are not really their bailiwick. (Being unclear on whether T8 and T12 ...
Harper - Reinstate Monica's user avatar
4 votes
Accepted

Systematic process to find replacement fluorescent T5 lamp holder

You just need a t5 tombstone, that looks like a tall one measure it and places like 1000 bulbs.com or other places have them, depending on quanties for less than a buck. Just make sure if shunted or ...
Ed Beal's user avatar
  • 103k
4 votes

Can a T8 bulb work with a T5 ballast?

T5 lamps are usually 54W while T8 lamps are 32W. The ballast's job is to establish the arc then keep the lamp running at the proper level. T5 lamps are shorter so the initial arc may not work well ...
Ed Beal's user avatar
  • 103k
4 votes
Accepted

Replaced fluorescent tubes with LED tubes, the LEDs only turn on when tapped

I have the same issue. The Keystone KTEB-232RIS-1-TP-SL ballast is not compatible with the Feit T48/840/LED/2 tube. I have four Lithonia Lighting fixtures I just purchased only to learn the Keystone ...
Jim Smart's user avatar

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