QA

Quick Answer: How To Replace Ballast T8

Do I need an electrician to replace a ballast?

Yes. In fact, you really need a locking device to replace the ballast. – An electrician replaces the ballast on a fluorescent lamp. He uses a switch on the wall to turn off the fluorescent light.

How do I know if a ballast is bad?

If your fluorescent lighting is displaying any of the signs below, it could be a symptom of a bad ballast: Flickering. Buzzing. Delayed start. Low output. Inconsistent lighting levels. Switch to an electronic ballast, keep lamp. Switch to an electronic ballast, switch to a T8 fluorescent.

Why are my fluorescent lights flickering?

If your fluorescent bulbs flicker, most likely the problem is with the bulb itself. If the bulb is very dark on either end, it may be defective and burned out. The best way to test the functionality of a bulb is to put it into a fixture you know works. Flickering fluorescent lights can also be a result of temperature.

How do you match a lightbulb with a ballast?

By selecting a ballast with an ideal ballast factor, you can optimize the light output of your fluorescent lighting system and maximize your energy savings. To estimate your total system lumens, multiply the rated lumens of your lamp by the ballast factor. For example, 3200 lumens x 0.77 BF = 2464 total system lumens.

Can a T8 ballast run a T12 bulb?

T8 LED lamps which are not direct-wire compatible (with ballast) will require a T8 ballast to operate, so unless the T12 ballast in the T12 fixture is replaced with a T8 ballast, a non-direct-wire compatible T8 LED lamp will not work in a T12 fixture.

How do I know if my ballast is T8 or T12?

If no markings are available, the size in diameter of the tube is the easiest way to determine the type you have installed. T8 tubes are 1-inch in diameter and T12 tubes are 1 1/2 -inch.

What is T8 electronic ballast?

T8 Fluorescent ballasts operate a wide range of T8 Lamps including F17T8, F25T8, F32T8, F32T8ES, F40T8 and more. Fluorescent bulbs or lamps are categorized according to their wattage, shape and diameter. The “T” in T8 indicates the bulb is Tubular, while the “8” means they are eight / eighths inch (or 1″) in diameter.

Can you replace a ballast yourself?

The ballast takes in electricity and then regulates current to the bulbs. You can get a new ballast at a hardware store or home center and install it in about 10 minutes. However, buying a ballast can be expensive, so consider pricing a brand-new fixture for comparison.

Is it cheaper to replace ballast or fixture?

A replacement ballast costs about $10-25 depending on capacity and brand. The bite is that an electrician trip charge (which includes 30 or 60 minutes work) is going to be $75-150 probably – for about 5 minutes work on each light fixture.

Is it the starter or the ballast?

In older fluorescent fixtures, the ballast, or choke, is a transformer that limits the current flowing into the tube, while the starter provides the high voltage needed to excite the tube when it is turned on.

Will a bad ballast burn out bulbs?

The ballast itself can go bad, which causes lights to flicker or even appear to be burnt out, when in fact they aren’t. They require maintenance and energy to power, on top of the power used to light the fluorescent bulb. They are a large part of the equation when using fluorescent lamps.

What happens when a ballast fails?

But there is a good chance your ballast could be the cause of your lighting woes if your lights are dim, buzzing, changing colors, or flickering rapidly. You should check all parts of the fixture, including the bulbs. If the bulbs fail to light up, then 9 out of 10 times the ballast is culprit.

Why do fluorescent ballasts fail?

Flickering fluorescent tubes can cause the ballast to overheat and fail prematurely! When it’s too hot or too cold, the ballast can burn or fail to start your lamps at all. Heat combined with prolonged condensation inside an electronic ballast can cause corrosion and ballast failure.

How do you tell when a fluorescent bulb is burned out?

How to Tell If a Fluorescent Tube Is Bad? Check the ends of the tube. If they appear darkened this indicates the bulb is burned out. Rotate the tube in the fixture if the bulb is not darkened on either end. Remove the bulb from the fixture if the bulb is still not illuminating.

Why do my T8 bulbs flicker?

If your fluorescent tube starts flickering it is probably because it is wearing out. When a fluorescent light is flickering, a bad starter or ballast is usually the culprit, but not always. Sometimes the bulb has simply worn out, and, as John Nugent & Sons advises, sometimes the ambient temperature is too low.

Will a T8 fit in a T12 fixture?

T8 tubes are simply 1 inch in diameter versus the 1.5 inch diameter of T12 tubes. In an effort to make LED tube lights compatible with the internal dimensions of most fixtures, you will find that most LED tube lights feature a T8 or 1 inch diameter. They can indeed be used in T12 fixtures.