{"id":694959,"date":"2024-11-06T05:38:09","date_gmt":"2024-11-06T05:38:09","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ul-8442021\/"},"modified":"2024-11-06T05:38:09","modified_gmt":"2024-11-06T05:38:09","slug":"ul-8442021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ul\/ul-8442021\/","title":{"rendered":"UL 844:2021"},"content":{"rendered":"<p><b>1 Scope<\/b><\/p>\n<p>1.1 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, NFPA 70.<\/p>\n<p id=\"i844.13-1.2\">\n<p>1.2 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 National Electrical Code, NFPA 70.<\/p>\n<\/p>\n<p id=\"i844.13-1.3\">\n<p>1.3 These requirements cover luminaires for use only under the following atmospheric conditions:<\/p>\n<ol>\n<li>\n<p>a)\u00a0A minimum ambient temperature of minus 60\u00b0C (minus 58\u00b0F);<\/p>\n<\/li>\n<li>\n<p>b)\u00a0An oxygen concentration not greater than 21 percent by volume; and<\/p>\n<\/li>\n<li>\n<p>c)\u00a0A nominal barometric pressure of one atmosphere.<\/p>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p><b>Standard for Luminaires for Use in Hazardous (Classified) Locations<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/ul\/\"><b>UL<\/b><\/a><\/td>\n<td>2021-10-11<\/td>\n<td>96<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":694969,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2680],"product_tag":[],"class_list":{"0":"post-694959","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ul","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/694959","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/694969"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=694959"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=694959"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=694959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}