"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."