Underwriters Laboratories

Established in 1894 as the Underwriters' Electrical Bureau, UL is a global safety consulting and certification company, approved to perform safety testing by the U.S. federal agency of Occupational Safety and Health Administration.

Documents by this publisher

Series details	Title	Year	Status
UL 514B-2012	Conduit, tubing, and cable fittings	2012	Current
UL 514C-14	Nonmetallic outlet boxes, flush-device boxes, and covers	2014	Current
UL 514D-13	Standard for cover plates for flush-mounted wiring devices	2013	Current
UL 536-21	Flexible metallic hose	2021	Current
UL 546-08	UL LLC Outline of investigation for conductor termination compounds	2008	Current
UL 555-06	Fire dampers	2006	Current
UL 555S-14	Smoke dampers	2014	Withdrawn
UL 555S-25	Smoke dampers	2025	Current
UL 568-02	Standard for nonmetallic cable tray systems	2002	Current
UL 569-13	Standard for pigtails and flexible hose connectors for LP-gas	2013	Current
UL 580-06	Standard for tests for uplift resistance of roof assemblies	2006	Current
UL 586-09	Standard for safety for high-efficiency, particulate, air filter units	2009	Current
UL 603-08	Standard for power supplies for use with burglar-alarm systems	2008	Current
UL 609-18	Standard for local burglar alarm units and systems	2018	Current
UL 626-05	Water fire extinguishers	2005	Current
UL 639-07	Standard for intrusion-detection units	2007	Current
UL 641-10	Standard for Type L low-temperature venting systems	2010	Current
UL 651-11	Standard for Schedule 40, 80, Type EB and A rigid PVC conduit and fittings	2011	Current
UL 674-11	Electric motors and generators for use in hazardous (classified) locations	2011	Withdrawn
UL 674-22	Electric motors and generators for use in hazardous (classified) locations	2022	Current