Lighting A to Z
Lighting A to Z
Lighting A to Z
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FilamentsC-2VCC-2VC-5 C-6CC-62CC-6 C-7A C-8CC-82CC-8 C-9 C-11CC-11C-13CC-13C-2RCC-2RFilament designations consist of a letter or letters <strong>to</strong> indicatehow the Tungsten wire is coiled, and an arbitrary number <strong>to</strong>indicated the arrangement of the filament on the supports.C=Coiled Filament—filament in a single coilCC=Coiled Coil— filament is coiled and then coiled again,reducing its length.Filament supports are elements that protect the filament fromshock and vibration. The more filament supports a bulb has themore shock resistant it is. A RoughHouse or a Tough Bulb hasmany filament supports that cushion and protect the filamentfrom shock and vibration.10 Product Knowledge