1. What are T8 and T5 fluorescent tubes?
The fluorescent lamps (fluorescent tubes) are classified according to their diameter in various categories.
The letter "T" stands for "tube" (tube = rod-shaped fluorescent lamp). The number after the "T" stands for eighth inch (1 / 8 × 25.4 mm = 3.18 mm). A T5 tube, for example, has a diameter of 5 / 8 inches, which is about 16 mm.
|
T |
T2 |
T3 |
T4 |
T5 |
T8 |
T9 |
T12 |
|
d in mm (ca.) |
7 |
9 |
13 |
16 |
26 |
30 |
38 |
The lengths of the straight configuration of fluorescent lamps also standardized:
|
Typ |
T5 |
T8 |
||||||
|
Performance in W |
14 |
21 |
28 |
35 |
18 |
30 |
36 |
58 |
|
Length in mm |
549 |
849 |
1149 |
1449 |
590 |
895 |
1200 |
1500 |