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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.
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoActually they do fit. Even though the bulbs are a different diameter, the pins are the same. You however do not want to do this. It is a lose-lose-lose option. You will use more electric, get less light and the bulbs will burn out faster. Pay the extra and use T 8 bulbs.
Wiki User
∙ 9y agoThe diameters are different. Diameters of tubes are measured in 8ths. T, which stands for "Tube' then the diameter number. T8 would be a tube that is 8/8ths diameter or 1 inch. A T12 would be 12/8ths or 1 1/2 inch in diameter. In other words, T8 is much skinnier than a T12 would be.
Wiki User
∙ 14y agoThe number in T5 and T8 is referring to the diameter of the tube. An inch is divided into eight parts; the T5 is 5/8 inch in diameter and the T8 is 8/8 or 1 inch in diameter. So, the difference in a T5 and a T8 is 3/8 of an inch.
Wiki User
∙ 9y agoThe T stands for a tubular type of lamp. The numbers behind the letter stands for the diameter in 1/8 ths of an inch. So T8 represents 8 x 1/8 or 8/8 ths or 1 inch. A T12 is 12/8 ths or 1 and a 1/4 inches.
Wiki User
∙ 13y agoThe difference between a T12 lamp and a T8 lamp is their diameter. The lamps are sized in 1/8ths of an inch. T12 = 12/8ths or 1 1/2 inches. T8 = 8/8ths or 1 inch.
Wiki User
∙ 13y agoA T12 lamp indicates the diameter of the tube is 12/8 = 1.5 inches
and that of a T8 lamp indicates the diameter to be 8/8 =1 inch.
A Tx lamp will have a diameter x/8 = inches.
Wiki User
∙ 9y agoPhysically they will fit but the ballast and end sockets are wired differently. The lamp might light but not last long.
Wiki User
∙ 14y agono
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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.
Can 32 watt t12 fluorescent lamps be used where a 40 watt t12 fluorescent lamp was used?
Yes, these lamps can be interchanged.
How do you replace a fluorescent T12 lamp socket?
Fluorescent light replacement is easy as replacing light bulbs. Slowly twist the fluorescent until the lead of each end aligned to the path of ejection/insertion. Or just simply stretch both end of fluorescent ballast then remove/insert the fluorescent light.
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.
Can you use a larger diameter fluorescent tube instead of a smaller diameter tube?
Fluorescent tube are graded in 1/8 ths of an inch. When you speak of a T8 what this means is that the tube diameter is 8/8 ths or 1 inch. A T12 is 12/8 ths or 1 and 1/4 inches. What you have to find out is what type of ballast is in the fixture. T12's are associated with transformer type ballasts, like wise T8's are associated with electronic ballasts. The T8's have a different pin configuration wiring than that of the T12 tube. The T12 will not work in sockets wired for electronic ballasts.
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.
Can 32 watt t12 fluorescent lamps be used where a 40 watt t12 fluorescent lamp was used?
Yes, these lamps can be interchanged.
How do you replace a fluorescent T12 lamp socket?
Fluorescent light replacement is easy as replacing light bulbs. Slowly twist the fluorescent until the lead of each end aligned to the path of ejection/insertion. Or just simply stretch both end of fluorescent ballast then remove/insert the fluorescent light.
What is the difference between steel bar Y12 and steel bar T12?
The only difference between Y12 and T12 is the Kilos per meter. In a Y12 there is 0.888 Kilos and a T12 bar has 0.612 Kilos.
Will a T8 fluorescent bulb work in a T12 fixture?
no
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.
What colors of T12 lamps are available?
T12 lamp ordinarily known as fluorescent lamp or fluorescent tube refers to a gas-discharge lamp that uses electricity to excite vapor. T12 lamp is available in different colors such as light blue, violet, green and red.
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.
Can you upgrade to T5 fluorescent bulbs but not replace the fixture?
Since T5 bulbs are shorter than their T12 or T8 counterparts, they do not naturally fit into fixtures designed for T12 or T8 bulbs. Luckily, there are companies that offer retrofit kits that can allow you to use T5 bulbs in fixtures not designed for them. A company called Lumiversal makes two different types of these retrofits. These retrofits are a great way to save money and electricity plus you can rebates and incentives from your utility providers to help cover the cost.
Are t8 bulbs being discontinued?
No they are controlled by an electronic ballast. It's t12 and magnetic ballasts that are phased out
Should a new Curvalume T12 Fluorescent light rattle?
No, sounds like a piece of burned out filament moving around. Does it light up?
Can you use a larger diameter fluorescent tube instead of a smaller diameter tube?
Fluorescent tube are graded in 1/8 ths of an inch. When you speak of a T8 what this means is that the tube diameter is 8/8 ths or 1 inch. A T12 is 12/8 ths or 1 and 1/4 inches. What you have to find out is what type of ballast is in the fixture. T12's are associated with transformer type ballasts, like wise T8's are associated with electronic ballasts. The T8's have a different pin configuration wiring than that of the T12 tube. The T12 will not work in sockets wired for electronic ballasts.
