ANSI - American National Standards Institute
 Print this article  Previous Next 

Revised American National Standard Ensures Safety of Incandescent Light Bulbs

New York, Nov 02, 2007

Estimates indicate that the average American home is illuminated each day by thirty incandescent light bulbs. Manufactured in a wide range of voltages, sizes, and finishes, these low-cost bulbs are the most common source of artificial light in the home.

In an effort to ensure the safe operation of incandescent bulbs, or lamps, the National Electrical Manufacturers Association (NEMA) recently published a revised American National Standard (ANS) focused on safety specifications.

Shedding Some Light: a History Lesson

Humphry Davy, an English chemist, invented the first electric light in 1809.

In 1854, Henricg Globel invented the first true lightbulb using a carbonized bamboo filament placed inside a glass bulb.

In 1906, the General Electric Company became the first group to patent the use of tungsten filaments in incandescent light bulbs.

Issued on behalf of the American National Standard Lighting Group (ANSLG), parts one and two of ANSI_ANSLG C78.60432-2007, American National Standard for Electric Lamps—Incandescent Lamps—Safety Specifications, have been revised and re-designated to conform to IEC Guide 21-2005, which provides methods for the adoption of international standards as regional or national standards.

Part one of the ANS covers tungsten filament light bulbs, while part two addresses tungsten halogen bulbs for general and home use. The revisions made to both parts concern some international terms and requirements that differ from those commonly used in the United States.

For more information about these revisions, please contact the NEMA communications department by phone at 703.841.3225, or by email at

ANSI Incorporated by Reference IBR Portal