T8 T12 Bulbs Interchangeable

Due to the us putting a ban on standard 40 watt t12 lamps high efficiency ones are hard to come by but still exist some ballasts were made t8 t12 compliant. The different sizes are not directly interchangeable so if you want to use another size then you will have to do a bit of handiwork. Many years ago the research found out that if they could make the light tube thinner then there would also be greater energy efficiency associated with it.

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While t12 led lamps are 12 8 and t5 measures 5 8 inches.

T8 t12 bulbs interchangeable.

In an effort to make led tube lights compatible with the internal dimensions of most fixtures you will find that most led tube lights feature a t8 or 1 inch diameter. T8 lighting tends to be more expensive and have a shorter lifespan of around 15 000 hours. On the most basic level the t12 and the t8 bulbs have a different diameter tube thickness. Home depot s web site only shows t12 bulbs for 2 ft 20 watt bulbs.

They can indeed be used in t12 fixtures. The smaller t5 and t8 tubes use less energy and have less mercury in them than t12 bulbs. However a t12 ballast will shorten the life a t8 lamp. All these bulbs can be used vice versa so long as they share the same bi pin connections on the base the 2 pins at the end of the tube and have the right milliamp power supply requirements.

The light fixture was installed in 1987. The t12 is an older generation fluorescent bulb that generates light through electromagnetic induction which is considered less efficient method of creating light compared to that of newer electronic based circuits. T7 t8 t10 t14 from top left to bottom right. T7 led bulb in wall sconce t14 led bulbs in bathroom vanity light fixture t8 led bulbs in garage tube light fixture t10 led bulb in freezer t8 led bulb in basement tube light fixture.

Both t8 and t12 lamps use a g13 base. T8 tubes are simply 1 inch in diameter versus the 1 5 inch diameter of t12 tubes. Tubular t bulbs come in a variety of lengths and widths. The previous bulb was 20 watt and i think it was 2 ft.

I ve heard different contradicting things about whether t8 and t12 are truly interchangeable. The t12 is 1 5 inches in diameter and the t8 is 1 inch in diameter. Long but i can measure that. For instance the more popular and often the best t8 led lamps have a one inch diameter 1 8.

I thought t12 was outdated so i am totally confused. The other common lamps are the larger t8 eight eighths inch 1 and t12 twelve eights inch 1 tubes.

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