BS 3676-1:1989 - Switches for household and similar fixed electrical installations - Specification for general requirements
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BS 3676-1:1989, titled "Switches for household and similar fixed electrical installations – Specification for general requirements," specifies the requirements and testing methods for manually operated general-purpose switches intended for household and similar fixed electrical installations. These switches are designed for a rated voltage not exceeding 440 V and a rated current not exceeding 63 A, with a particular emphasis on ensuring safety during normal use.The standard encompasses various aspects, including definitions, general requirements, type testing procedures, ratings, classifications, markings, dimensions, accessibility of live parts, earthing provisions, terminal requirements, constructional requirements, mechanical properties, resistance to aging, insulation resistance, temperature rise, making and breaking capacity, normal operation, mechanical strength, resistance to heat, specifications for screws and connections, creepage distances, and resistance of insulating materials to abnormal heat, fire, and tracking.
