T8 T12 Bulbs Interchangeable

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

T8 t12 bulbs interchangeable.

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. 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. Long but i can measure that. 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.

Home depot s web site only shows t12 bulbs for 2 ft 20 watt bulbs. On the most basic level the t12 and the t8 bulbs have a different diameter tube thickness. Tubular t bulbs come in a variety of lengths and widths. T8 tubes are simply 1 inch in diameter versus the 1 5 inch diameter of t12 tubes.

I thought t12 was outdated so i am totally confused. 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. The t12 is 1 5 inches in diameter and the t8 is 1 inch in diameter. 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 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. However a t12 ballast will shorten the life a t8 lamp. The smaller t5 and t8 tubes use less energy and have less mercury in them than t12 bulbs. They can indeed be used in t12 fixtures.

The light fixture was installed in 1987. I ve heard different contradicting things about whether t8 and t12 are truly interchangeable. The previous bulb was 20 watt and i think it was 2 ft. The other common lamps are the larger t8 eight eighths inch 1 and t12 twelve eights inch 1 tubes.

T8 lighting tends to be more expensive and have a shorter lifespan of around 15 000 hours. Both t8 and t12 lamps use a g13 base.