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WHAT IS ANOTHER WORD FOR REVERSE LIGHTS DRIVER

Unlike a UL Type B LED tube, these do not have the LED driver integrated into the LED tube, and therefore requires a separate LED driver device to be connected between the LED tube and mains electricity.

UL Type C LED tubes are relatively uncommon, but offer the most flexibility and efficiency for a lighting system. 3C) UL Type C LED tube light - Remote Driver Disadvantages: requires comfort with and and knowledge of fixture wiring and electrical safety.

Ideal for: installations where electrical rewiring is an option higher efficiency and lower maintenance costs. In a single-ended configuration, only the two pins on one end of the tube are used (one pin = live one pin = neutral), and the two pins on the other end are not electrically functional, and only used for holding the lamp in place. UL Type B LED tubes can further be categorized as single-ended or double ended.

The LED driver, however, is integrated into the LED tube itself. They cannot be used with the fluorescent ballast, and must be connected directly to mains electricity. LED tube lights that have a "UL Type B" specification are not compatible with fluorescent ballasts. 3B) UL Type B LED tube light - Ballast Bypass Ideal for: Consumers not comfortable with or preferring to avoid electrical wiring work, lighting installations where electrician labor costs are high Disadvantages: Fluorescent ballasts can fail, requiring continued maintenance and eventual replacement or bypass of the ballast potential issues with fluorescent ballast compatibility lower overall electrical efficiency due to ballast. The UL Type A LED tube light essentially behaves the same a fluorescent lamp, and is a straightforward swap-in. They are the most straightforward to implement, since it does not require rewiring the fluorescent fixture. Alterations to the fluorescent lamp ballast should be done only by those comfortable and knowledgeable with electrical work.Ĭommonly designed "UL Type A" - these LED tube lights are designed to be compatible with fluorescent ballasts. These devices are necessary for fluorescent lamps, and differ from incandescent lamps which can be connected directly to mains electrical circuits.įluorescent lamp fixtures typically house the ballast inside the fixture, and is not accessible without removing the fixture from the ceiling. 3) Fluorescent ballasts and LED tube light retrofittingĪll fluorescent tube lights use a device called a ballast to regulate the lamp's brightness as it warms up. T5 fixtures are NOT cross-compatible with T8 and T12 lamps due to their different pin sizes and actual length. T8 and T12 fixtures are generally the same length and use the same pins, so mechanically they are usually cross-compatible. LED tube lights replicate the mechanical dimensions to ensure that they can be true retrofit replacements, and adopt the same form factor names (e.g. T8 and T12 tubes are also available in other lengths such as 8-ft tubes, but 4-ft lengths remain the most common types. T5 lamps come in a variety of lengths such as 1-ft, 2-ft and 3-ft versions and are commonly used in non-ceiling fixtures such as table lamps. They are slightly shorter than four feet (45.8 inches). They are commonly designated T5HO (high output) and provide more brightness than their T8 counterparts.

T5 4-ft: Four-foot T5 fluorescent lamps are typically the most efficient, and some of the newest types of lamps introduced in the 2000's in the USA.

They are the same length as T8 lamps, but have a larger 1.5 inch lamp diameter.

T12 4-ft: Four-foot T12 fluorescent lamps are less efficient compared to T8 lamps.

They are 48 inches in length, and have a 1 inch lamp diameter.

T8 4-ft: Four-foot T8 fluorescent lamps are the most commonly used type today.

Over the years, fluorescent tube manufacturers developed many varieties of sizes and types. Therefore, it is important to understand the types of fluorescent tubes that were developed, so that the correct LED tube light can be retrofitted in place. 2) Fluorescent tubes sizes and LED tube light retrofittingīecause fluorescent fixtures are often mounted into ceilings and connected directly to mains electricity, they are relatively expensive and difficult to replace completely.Īs a result, it oftentimes makes the most economical sense to simply use the same fluorescent fixture, but replace the fluorescent tube with an LED tube light.