What is the ballast in a fluorescent light?
In a fluorescent lighting system, the ballast regulates the current to the lamps and provides sufficient voltage to start the lamps. Without a ballast to limit its current, a fluorescent lamp connected directly to a high voltage power source would rapidly and uncontrollably increase its current draw.
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.
- In other words, they have different wiring methods. The circuit structure of the LED tube light requires rewiring the fixture in a practice to replace the fluorescent, which will be very expensive. Very luckily, although the LED light does not need the ballast, it is compatible with the inductive ballast.
- you have to remove the ballast- as most t8 tubes have an electronic one inside. If you put them in t12- you will burn the bulb up and they will work sporadically before they die. Also the fixture gets blackend. You must use non shunted lamp holders.
- Lifespan – The average life of a T8 LED is 50,000 hours, versus only 30,000 hours for an average T8 LFL. Shatterproof (potentially) – Most T8 LED tubes are made with a shatterproof coating. With linear fluorescent, you either had to specially order shatterproof fluorescent lamps or use a tube guard which was costly.
you have to remove the ballast- as most t8 tubes have an electronic one inside. If you put them in t12- you will burn the bulb up and they will work sporadically before they die. Also the fixture gets blackend. You must use non shunted lamp holders.
- What is the difference between T5, T8 and T12 lamps? Fluorescent lamps, or fluorescent linear tubes as they are also known, are categorized according to their wattage, shape and diameter. The "T" in T5 indicates the bulb is tubular shaped, while the "5" denotes that it is five eighths of an inch in diameter.
- As a result, they provide the most energy efficient solution to fluorescent lamp ballasting. The instant-start ballast uses 1.5 to 2 watts less energy per lamp than the rapid-start alternative. Instant-start electronic ballasts provide a high initial voltage (typically 600V for F32T8 lamps) to start the lamp.
- An inductor is very common in line-frequency ballasts to provide the proper starting and operating electrical condition to power a fluorescent lamp, neon lamp, or high intensity discharge (HID) lamp. (Because of the use of the inductor, such ballasts are usually called magnetic ballasts.)
Updated: 18th November 2019