Must have two contacts (hot and common) to create a circuit.
Screw, Prefocus, Bipost, Bayonet
Candelabra, Minature, Medium, Mogul
Material (tungsten) that resists heat, then glow when electricity is forced through the circuit.
Glass or synthetic quartz
Frosted or Clear
Shapes: Tubular, Globular, Reflector,
Sizes: Number indicates 1/8" increments
Tungsten Halogen Lamps
Longer lamp life
Smaller lamp housing
Higher color temperature
Special handling requirements
Continuously Burning Light Bulb
Burning continuously since 1901!
American National Standards Institute
Arbitrary three letter code
Necessary to install proper lamp in each fixture
Marshall Center Lighting Inventory
What to Do
When You Don't Have the ANSI Code
by Earl Lee Burnout
(courtesy of Scott Electric)
Provide as much information about the lamp as possible...
...and lamp suppliers should be able to identify the lamp you need!