How can you tell a magnetic ballast from an electronic ballast

If you can see some strong dark strips flickering in your camera, it must be a magnetic ballast based light.Otherwise it should be an electronic ballast based light.

How do I know what kind of ballast I have?

You can determine whether you have a compatible fixture in seconds. Simply turn the light on, then take a photo of the fixture using your smartphone or digital camera. If there are no dark bands on the resulting image, you have an electronic ballast that will work with direct drop-in LED tubes.

Can I replace a magnetic ballast with an electronic ballast?

Newer electronic ballasts are far more energy-efficient, don’t require a starter and are not as affected by cold temperatures as the magnetic predecessors. If you have an older fixture, you can switch from a magnetic ballast to an electronic ballast in a few minutes with some basic hand tools.

What is the difference between an electronic ballast and a magnetic ballast?

A magnetic ballast uses coiled wire and creates magnetic fields to transform voltage. … An electronic ballast uses solid state components to transform voltage. It also changes the frequency of the power from 60 HZ to 20,000 HZ or higher depending on the ballast.

How do I identify a PCB ballast?

Ballasts manufactured between 1979 and 1998 that do not contain PCBs are labeled “No PCBs” If a ballast is not labeled “No PCBs”, it is best to assume it contains PCBs. If the ballast does contain PCBs, they are located inside the small capacitor or in the surrounding potting material.

Is my ballast T8 or T12?

Replace Current Lamp You will see either T8 or T12 stamped on one side near the end with the prongs. You also will see the lamp’s rated wattage, usually 32 watts for T8 and 40 watts for T12. Measure the diameter of the lamp. T12 lamps are larger than T8 lamps, with a 1 ½-inch diameter.

How do I tell if I have a magnetic ballast?

If you can see some strong dark strips flickering in your camera, it must be a magnetic ballast based light.
Otherwise it should be an electronic ballast based light.

Are digital ballast better than magnetic?

Magnetic ballasts are easily the cheaper option when first buying. However digital ballasts, although pricey to begin with, will run more efficiently, use less energy and in effect help to lower your electricity bills over time.

Can you mix magnetic and electronic ballasts?

There is no problem with replacing the magnetic ballasts with electronic ballasts, one at a time, light fixture by fixture, just keep track of the type of lamps that are specified on the label of the new electronic ballasts which will most likely be the T8 type lamps.

Does a magnetic ballast need a starter?

Unlike retrofitting a T8 LED Tube into a fitting that houses a magnetic ballast, there is no need for a starter. For an electronic ballast just simply change the tubes over and you’ll be good to go.

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What happens if you use wrong ballast?

If you use a wrong sized ballast the LRC will not be tuned so you are likely to not start the lamp at all. There is the possibility of burning out components pre-maturely also due to overcurrent and overvoltage conditions particularly if using a larger ballast on a smaller fixture.

What are the red and blue wires on a ballast?

The ballast has a hot and neutral wire at one end to receive power, and two blue wires a red one at the other end to supply power to the lights.

What does PCB look like?

Polychlorinated biphenyls (PCBs) are a group of manmade chemicals. They are oily liquids or solids, clear to yellow in color, with no smell or taste. PCBs are very stable mixtures that are resistant to extreme temperature and pressure.

Do electronic ballasts have PCBs?

Electronic ballasts do not contain PCBs or any other hazardous materials. Magnetic ballasts, on the other hand, are outdated technology and commonly contain PCBs. Check the ballast’s manufacturing date. If you know the ballast was installed or manufactured before 1978, it most likely contains PCBs.

What is in a magnetic ballast?

A magnetic ballast (also called a choke) contains a coil of copper wire. The magnetic field produced by the wire traps most of the current so only the right amount gets through to the fluorescent light. That amount can fluctuate depending on the thickness and length of the copper wire.

How do you test a digital ballast?

To measure it, set your digital multimeter to around a thousand ohms resistance setting. Connect the black leads to the white ground wire on your ballast. Afterward, test every other wire with the red lead. When you do this test, a good ballast will return an “open-loop” or max resistance.

How do you read a ballast number?

Most fluorescent types are T5, T8, and T12. The T stands for tubular and the number provides the diameter in 1/8 of an inch. Lamp diameter is determined by ballast type. Therefore, a T12 ballast must use a T12 bulb.

How can you tell the difference between T8 and T12 bulbs?

On the most basic level, the T12 and the T8 bulbs have a different diameter tube thickness. The T12 is 1.5 inches in diameter and the T8 is 1 inch in diameter.

Will a T8 work in a T12 ballast?

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. …

What are the disadvantages of magnetic ballast?

Some disadvantages of the inductive ballast are: they are less efficient than capacitive ballasts, they cost more, they weigh more, and they take up more space. Magnetic ballasts are typically used in reactors using medium pressure (MP) lamps.

What are the yellow wires on a ballast?

The two yellow wires complete the circuit through the fluorescent tube back into the ballast. The red and blue wires energize the pins the fluorescent tube is attached to, the yellow wires connect to the pins on the opposite ends of the fluorescent light tubes completing the circuit.

Can you dim a magnetic ballast?

Dimming systems are currently available for both magnetic and electronic ballasts, but due to legislation that has effectively banned most magnetic ballasts bulbs.com strongly recommends using an electronic ballast-based system.

How long does a magnetic ballast last?

According to the Certified Ballast Manufacturers Association, the average magnetic ballast lasts about 75,000 hours, or 12 to 15 years with normal use.

What is a magnetic ballast used for?

Like all ballasts, a magnetic ballast regulates the voltage a fluorescent light receives so that the bulb doesn’t overheat and immediately explode. A magnetic ballast is a type of electrical power regulator used in fluorescent light systems.

How do you test an electronic ballast with an analog multimeter?

Set the multimeter to the ohm setting. Choose “X1K” if there are multiple ohm settings on your multimeter. Insert one probe of the multimeter in to the wire connector holding the white wires together. Touch the remaining probe to the ends of the blue, red and yellow wires leading from the ballast.

What are the signs of a bad ballast?

Buzzing. If you hear a strange sound coming from your bulbs or light fixture, like a buzzing or humming noise, that’s often a sign your ballast is going. …
Dimming or flickering. …
No lights at all. …
Changing colors. …
Swollen casing. …
Burn marks. …
Water damage. …
Leaking oil.

How many volts does a ballast put out?

Fluorescent lamps use a ballast which transforms line voltage to a voltage to start up and operate the lamp(s). Newer fluorescent ballasts are usually rated for both 120 volts and 277 volts. Some are rated for only 120 volts, others for only 277 volts (used in commercial environments).

Are there different types of ballasts?

And there are two types of ballasts in each family: magnetic and electronic. Magnetic ballasts are the older ballast technology. … For HIDs, some metal halides and HPS lamps use magnetic ballasts. Magnetic ballasts are typically the culprit for buzzing and flickering because they regulate electricity incrementally.

How many watts do ballasts use?

Electronic Ballasts Standard ballasts consist of a core and coil assembly. On a typical fixture with two 4 foot 40 watt T-12 fluorescent lamps, the ballast consumes about 13 to 16 watts of electricity. Thus the total consumption of the two lamps plus the ballast is about 93 to 96 watts.

What is the GREY red wire on the ballast for?

The gray/red wire is the return path for the second set of lamps. In other words, it is the neutral for the second set of lamps.

What are the black and white wires on a ballast?

Black wire is for line voltage and white wire for neutral. An instant start ballast uses a single wire which connects from the ballast to each of the lamp terminals.