Filament designation
The configuration of the filaments in all tungsten filament lamps is identified by a prefix letter or letters, followed by a number. The letter indicates whether the wire is a single coil (C) or coiled coil (CC); the number indicates the form or arrangement of the coil on its support structure. Note that the illustrations are not to scale.
Planar (MP) C13 | Biplanar (BP) C13d | C2V | C7A | C9 |
Monoplane | Biplane |
|
|
|
2C8 2CC8 | C6 Oval | CC6 (Reflector) | CC8 (Reflector) | C6 CC6 | C8 CC8 |
GE LIGHTING - ENTERTAINMENT LIGHTING CATALOGUE | 91 |
