"The requirements of this Standard apply to manually operated@ general-use snap switches for connection to copper (Cu) or copper-clad conductors used in accordance with the National Electrical Code(NEC)@ ANSI/NFPA 70@ or the Canadian Electrical Code (CEC)@ Part 1@ and intended for connection to wiring systems recognized by the NEC or the CEC@ Part 1. In Canada@ requirements for switches for connection to aluminum (Al) conductors used in accordance with the CEC@ Part 1@ and intended for connection to wiring systems recognized by the CEC@ Part 1@ are covered in Appendix B. This Standard applies to ac/dc rated switches for which the load ratings do not exceed 60 A at 250 V or less@ 30 A at 251 V ?C 600 V@ and 2 hp at 125 V ?C 600 V or less. This Standard also covers ac-only rated switches for which the load ratings do not exceed 30 A at 347 Vac or less. This Standard applies to switches constructed to be installed readily in a flush device box or on an outlet-box cover and intended for connection to branch-circuit wiring. This Standard applies to pendant and through-cord switches intended for field installation on flexible cord and provided with one ""on"" and one ""off"" position. This Standard applies to switches intended for surface mounting and provided with a separable base and cover for connection to exposed wiring consisting of nonmetallic sheathed cable or open wiring on insulators (knob and tube). This Standard applies to self-contained switches intended for flush mounting without a separate outlet box and for connection to branch-circuit wiring consisting of one or more non-metallic sheathed cables containing copper conductors. This Standard applies to ac/dc fixture switches intended to be installed in fixtures to control incandescent lighting or fans for connection to branch-circuit wiring. This Standard also applies to single-pole@ momentary-contact door switches constructed to be installed readily in a special-purpose device box or on an outlet-box cover for connection to branch-circuit wiring. This Standard does not apply to: Clock operated switches specified in the Standard for Clock-Operated Switches@ UL 917@ and CSA Standard C22.2 No. 177; Dimmer switches specified in the Standard for Solid-State Dimming Controls@ UL 1472@ and CSA Standard C22.2 No. 184.1; Industrial control equipment specified in the Standard for Industrial Control Equipment@ UL 508@ and CSA Standard C22.2 No. 14; Solid-state@ single-phase motor speed controls specified in the Standard for Solid-State Fan Speed Controls@ UL 1917@ and CSA Standard C22.2 No. 156; Special-use and ac-only fixture switches specified in the Standard for Special-Use Switches@ UL 1054@ and CSA Standard C22.2 No. 55; and Switches for use in hazardous locations specified in the Standard for Switches for Use in Hazardous (Classified) Locations@ UL 894@ and CSA Standard C22.2 No. 159. For switches intended for connection to branch-circuit wiring containing aluminum conductors@ refer to the Standard for Receptacles and Switches Intended for Use with Aluminum Wire@ UL 1567@ or to Appendix B."
2017UL 20 BULLETIN-2017 UL Standard for Safety General-Use Snap Switches (COMMENTS DUE: May 1@ 2017)
2014UL 20 CRD-2014 UL Standard for Safety General-Use Snap Switches - Section / Paragraph Reference: New Supplement SA Subject: AC Only Flush Switch with Integral Power Supply with Class 2 Output Connectors (Edition 13: May 10@ 2010)
2013UL 20 CRD-2013 UL Standard for Safety General-Use Snap Switches - Section / Paragraph Reference: Para. 2.10.1@ Sections 4.4@ 4.5.3@ 5.2.10@ 5.28@ 7.1@ Tables 5.28.1@ Figures 5.28.1@ 5.28.2 Subject: Flush Switches Employing A Combination Wire Binding/Pressure-Type Termin
2011UL 20 BULLETIN-2011 UL Standard for Safety General-Use Snap Switches (COMMENTS DUE: November 14@ 2011)
2010UL 20 BULLETIN-2010 UL Standard for General-Use Snap Switches (COMMENTS DUE: November 08@ 2010)
2010UL 20-2010 UL Standard for Safety General-Use Snap Switches (Thirteenth Edition; Reprint with Revisions Through and Including February 17, 2012)
2009UL 20 BULLETIN-2009 UL Standard for Safety General-Use Snap Switches (COMMENTS DUE: February 02@ 2010)
2008UL 20 BULLETIN-2008 UL Standard for Safety General-Use Snap Switches (COMMENTS DUE: April 17@ 2008)
2003UL 20 BULLETINS-2003 UL Standard for Safety General-Use Snap Switches (12/22/2003 (10p); 08/06/2003 (16p))