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Is a T8 ballast and T8 bulb more efficient then a T12 ballast and a T8 bulb?
Wiki User
∙ 10y ago
In a T* ballast and T8 bulb more energy efficient then a T12 ballast and a T8 bulb? A:Depends on the CURRENT through the tube. When the Tube is run at 100% of rating, The T12 Takes more CURRENT to give a certain Brightness. Because the surface of the T8 is closer to the ion stream through the tube, it takes less CURRENT to light up the T8 to the same brightness. However, IF you use a T12 in a T8 ballast, you will get LESS CURRENT through the tube, and LESS POWER consumed ALONG with LESS Light.
Wiki User
∙ 10y ago
Wiki User
∙ 8y agodo not have a starter electrode; ballast circuits and high-voltage electronic starter.
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Can you replace t8 bulb in fixture now using t12 bulb?
Yes a T12 lamp socket will take a T8 tube. The T8 tube will not operate. The T8 ballast is an electronic ballast where as the T12 ballast is a magnetic type. If you are changing over fluorescent fixtures to the smaller T8 lamps then the ballast has to be changed and the end sockets have to be rewired. The schematic on how to do the rewire is on the electronic ballast's label.
Can a 34 watt T8 bulb be put in a fixture designed with a 40 watt T12 ballast?
the 35 watt lamp will work in a 40 watt ballast.
Are T12 Fluorescent bulbs obsolete?
T12 lamps (tubes) are still available until the end of 2010 when the manufacturers can only sell off any inventories left on hand. It is now illegal though to buy new fixtures with T12 lamps in them. Actually you can buy fixtures with T-12 bulbs. The fixtures now come with Electronic T12 Ballast. Only Magnetic ballast for 4' and 8' were affected by e-pact. Now some big box stores may only sell T8 fixtures but that has to do more with price point.
What is the difference between T12 and F12 fluorescent tubes and are they interchangeable?
Not sure what you mean by an F12 bulb. The number on a bulb F12T12 means 12 watt fluorescent and the T12 means 12 units of 1/8" diameter. So a T12 is 1.5 inches in diameter.
Will a t 8 fluorescent tube work in a t 12 fluorescent fixture using a high output ballast?
Yes....usually. However, lamp (bulb) life may be somewhat shorter than if the proper t8 ballast is used. Since ballasts limit current flow in the circuit, a mismatched (t12) ballast would cause more current to flow through the t8 lamp than the lamp's design specification. The lamp's output would therefore be brighter in proportion to the additional current. Owners of aquariums and terrariums make use of this property by overdriving both T12 and T8 style lamps with ballasts designed to drive two (or more) lamps to drive a single lamp, therefore supplying 2x or more current to the lamp than its original ballast. This results in a greatly increased light output, somewhat reduced efficiency, and shorter lamp life.
Can you replace t8 bulb in fixture now using t12 bulb?
Yes a T12 lamp socket will take a T8 tube. The T8 tube will not operate. The T8 ballast is an electronic ballast where as the T12 ballast is a magnetic type. If you are changing over fluorescent fixtures to the smaller T8 lamps then the ballast has to be changed and the end sockets have to be rewired. The schematic on how to do the rewire is on the electronic ballast's label.
Can a 34 watt T8 bulb be put in a fixture designed with a 40 watt T12 ballast?
the 35 watt lamp will work in a 40 watt ballast.
Can you use 1 T12 bulb in a 2 bulb fluorescent fixture?
Depends on the ballast most of the newer electronic ones work on a wide range of lamps and input voltages and one or two lamps
Is T8 and T12 fixtures same wiring configure?
The T8 tubes are usually associated to fixtures with electronic ballasts whereas T12 tubes are used in magnetic ballasts. The tubes can not be transposed because the socket wiring is different. If you are converting a magnetic ballast to an electronic ballast the wiring diagram is on the label of the ballast.
Will a T8 fluorescent bulb work in a T12 fixture?
no
Are t8 bulbs being discontinued?
No they are controlled by an electronic ballast. It's t12 and magnetic ballasts that are phased out
Are T12 Fluorescent bulbs obsolete?
T12 lamps (tubes) are still available until the end of 2010 when the manufacturers can only sell off any inventories left on hand. It is now illegal though to buy new fixtures with T12 lamps in them. Actually you can buy fixtures with T-12 bulbs. The fixtures now come with Electronic T12 Ballast. Only Magnetic ballast for 4' and 8' were affected by e-pact. Now some big box stores may only sell T8 fixtures but that has to do more with price point.
What is the difference between T12 and F12 fluorescent tubes and are they interchangeable?
Not sure what you mean by an F12 bulb. The number on a bulb F12T12 means 12 watt fluorescent and the T12 means 12 units of 1/8" diameter. So a T12 is 1.5 inches in diameter.
Will a t 8 fluorescent tube work in a t 12 fluorescent fixture using a high output ballast?
Yes....usually. However, lamp (bulb) life may be somewhat shorter than if the proper t8 ballast is used. Since ballasts limit current flow in the circuit, a mismatched (t12) ballast would cause more current to flow through the t8 lamp than the lamp's design specification. The lamp's output would therefore be brighter in proportion to the additional current. Owners of aquariums and terrariums make use of this property by overdriving both T12 and T8 style lamps with ballasts designed to drive two (or more) lamps to drive a single lamp, therefore supplying 2x or more current to the lamp than its original ballast. This results in a greatly increased light output, somewhat reduced efficiency, and shorter lamp life.
Can you use T12 lamp holders with T8 lamps when you change to T8 ballast?
Absolutely. Only you need connect together two wires coming from each lamp holder (shunt).
What is the difference between a F20-T12 CW fluorescent bulb and a F20-T9 CW bulb?
The main difference is the diameter of the fluorescent bulb. The letter T designates the diameter in 1/8" increments. A T9 is 9/8" or 1 and 1/8". A T12 is 12/8" or 1 and 1/2". The CW stands for "cool white" which is in reference to the colour of the light output on a light spectrum chart.
Difference between T12 and T8 fluorescent bulbs?
A T8 lamp can be retro fitted into a T12 fixture by replacing the T12 ballast with a T8 ballast. The end sockets also have to be rewired in the retrofit as the wiring from the electronic ballast to the sockets is completely different.
