What is shunted vs non shunted? Shunted sockets feature internally connected electrical contacts. Non-shunted sockets have separate contacts – or points of entry for the wires – creating two tracks for the electrical current to travel. Non-shunted sockets have contacts that are not joined or connected.
Do I need shunted or non-shunted? Most direct-wire LED lamps require non-shunted lamp sockets while plug-n-play LED lamps typically require shunted lamp sockets. For the direct wire function, bypassing (removing) the ballast is essential for the operation of the LED bulb, so it can operate off line voltage directly.
Are T8 tombstones shunted? T8 fixtures must have the input side sockets changed to T12 sockets of the “Non-Shunted Rapid Start” type, as T8 sockets have a circular conductor that will not allow them to properly separate the line and the neutral sides of the circuit.
What is the difference between a shunted and non shunted tombstone? Shunted sockets feature internally connected electrical contacts. Non-shunted sockets have separate contacts – or points of entry for the wires – creating two tracks for the electrical current to travel. Non-shunted sockets have contacts that are not joined or connected.
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What is shunted vs non shunted? – Related Questions
Are T12 and T8 sockets the same?
The main difference between T8 and T12 tubes is the tube’s diameter. T12 tubes are 1.5″ in diameter while T8s are just one inch. All other things—socket sizes, lengths, distance between pins—are the same. T8 LED tubes won’t fall out if you try to install them in a T12 fixture—they’ll fit just fine.
Can you convert non shunted to shunted?
Something that many people aren’t aware of is the fact that a non-shunted lampholder can be converted to a shunted one if necessary. This is typically done using a very simple process. You can cut a wire and insert one end of the shortened wire into the left side of the unit.
Can you shunt a non shunted tombstone?
7 Answers. You can’t hack a shunted lampholder to be a non-shunted unless it’s designed to do that. For one thing there is no place to attach the wires. Yes, there are two wire holes, but a non-shunted holder has four.
Do I need to remove the ballast to use an LED bulb?
Bypass the ballast linear LEDs – also known as line voltage or direct-wire linear LEDs – work straight off the line voltage flowing directly to the sockets, requiring you to remove the original fluorescent ballast.
Which is better single ended or double ended LED tubes?
Double-ended LED lamps have the live and neutral pins on the opposite side of each lamp, giving it its name. Compared to single-ended LED lamps, Double-ended LED lamps are more efficient as fluorescent replacement applications because they are also double-ended.
How do you wire a non shunted socket?
To install, please wire non-shunted sockets by connecting one wire from the lamp holder to branch circuit L (LINE) and the other wire at the opposite end to the branch circuit N (NEUTRAL). Do not connect opposite side to power. Use appropriate wires for connection.
Are all T12 sockets shunted?
These sockets are used in fluorescent fixtures with programmed start, rapid start, and dimming ballasts. When retrofitting a fluorescent fixture with a single lamp or replacing an old socket, look for individual non-shunted sockets. Many of these sockets can be used with both T8 and T12 tubes.
Are T5 sockets shunted?
T5 – T5HO Sockets – Mini Bi-Pin Bulb Sockets
The sockets are typically used with small incandescent light bulbs or fluorescent lights. Mini Bi-Pin sockets may be either shunted or unshunted depending on the application.
What are non shunted tombstones?
In non-shunted lampholders, or tombstones, current flows through multiple paths and in shunted tombstones current flows through a single path. Rapid start, programmed start, and dimming ballasts use non-shunted lampholders to provide power through the lamp’s cathodes before the lamp is turned on.
What is a double ended LED tube?
A double-ended LED lamp is a lamp that has the live and neutral pins on the opposite side of each lamp. The Energy Focus Commercial Double-Ended Ballast Bypass (DEBB) LED tube is a double-ended lamp. The DEBB can be used with shunted or unshunted lampholders.
What happens if you put a T8 bulb in a T12 fixture?
If you place T12 tubes in a fixture with a T8 ballast, you will wear out the ballast and have to replace it. If you place T8 tubes in a fixture with a T12 ballast, then the tubes will have a shorter life due to a higher current through the tube.
What is better T12 or T8?
The smaller the lamps the more energy efficient they are. T8 bulbs use about 35% less electricity to produce the same amount of light as a T12. For some applications, one T5 bulb can replace two T12 bulbs, providing even greater energy savings (a process called “de-lamping.”)
Are T8 or T12 bulbs brighter?
The Standard T12 lamp produces 2,650 initial lumens per lamp. The standard T8 produces 2,800 initial lumens per lamp, 6% brighter. But the standard T12 lamp produces 2,300 design lumens and the T8 produces 2,660 design lumens.
What is the difference between rapid start and instant start ballast?
Rapid start configurations have two wires connected to each side of the lamp. With an instant start configuration, a high voltage pulse is used to start the arc between the lamp’s cathodes. The primary advantage of instant start systems is the energy saved since no power is required to heat the cathodes.
Are LED lights brighter than fluorescent?
You will not experience any kind of flickering or dark spots left at any of the indoor places. The LED tube lights are noticeably brighter than fluorescent tubes and you don’t get exposed to any kind of harmful rays such as UV/IV rays as well that can damage your eyes and can result in skin allergies as well.
Can I replace a fluorescent tube with LED?
Yes, you can replace fluorescent tubes with LED tubes or LED integrated fixtures. As long as the bulb is compatible with the existing fluorescent ballast in the fixture, you simply remove the fluorescent and replace it with the LED tube light.
Do LED tubes need starters?
Yes, it is possible to replace a fluorescent bulb with an LED. Conventional fluorescent tubes need a starter. This starter provides ignition voltage. Naturally, this isn’t necessary for LEDs, so the ignition voltage is superfluous.
What does shunted mean?
transitive verb. 1a : to turn off to one side : shift was shunted aside. b : to switch (a railroad car, a train, etc.) from one track to another. 2 : to provide with or divert by means of an electrical shunt.
Can you bypass ballast for LED lights?
Once the light is on, the ballast acts as a current regulator. Since LED lights work on low DC voltage, they need a driver. Most T8 LED tubes do not need a ballast. So, if you are going to install a T8 LED tube light, it will require a ballast bypass unless you choose a ballast compatible T8 LED tube.
Are double-ended LED tube safe?
It is evident that overall, the safest choice is the double-ended LED tube with the safety switch, which provides adequate shock hazard protection during installation and maintenance.
What are the yellow wires on a ballast?
The common yellow wires connect from the ballast to push-in connectors on one of the right holders of lamp 1 or 2. Two yellow wires connect the common lampholders together.