UL 844, “Standard for Luminaires for Use in Hazardous (Classified) Locations,” has just been issued as the new 2012 13th Edition and is available now from Document Center Inc. These requirements cover fixed and portable luminaires for installation and use in hazardous (classified) locations — Class I, Divisions 1 and 2, Groups A, B, C, and D; Class II, Division 1, Groups E, F, and G; Class II, Division 2, Groups F and G; and Class III, Divisions 1 and 2, in accordance with the National Electrical Code (NEC), NFPA 70.
These requirements also cover luminaires for installation and use in Class I, Zones 1 and 2, Groups IIA, IIB, IIB plus Hydrogen, and IIC, and Zone 20, 21 and 22 hazardous (classified) locations in accordance with the NEC as well.
ANSI/UL 844 covers luminaires for use only under the following atmospheric conditions:
a) A minimum ambient temperature of minus 25°C (minus 13°F);
b) An oxygen concentration not greater than 21 percent by volume; and
c) A nominal barometric pressure of one atmosphere.
This new 110-page 13th Edition includes the following changes in requirements:
Revisions for Test Paint for Spray Booth Luminaires
Revisions for Temperature Tests at Elevated Ambient Temperatures
Correction of Referenced Section Title in Paragraph 74.3
Clarification of Required Number of As-Received Samples of Polymeric Enclosure Materials
All current UL standards are available from Document Center Inc.’s website, www.document-center.com, under license agreement with UL. If you have any additional questions, contact us by phone (650-591-7600), fax (650-591-7617) or email (firstname.lastname@example.org). We’re here to assist you with all your standards questions and requirements.