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  2. Appliance classes - Wikipedia

    en.wikipedia.org/wiki/Appliance_classes

    In Europe, a double insulated appliance must be labelled Class II or double insulated or bear the double insulation symbol: ⧈ (a square inside another square). As such, the appliance should not be connected to an earth conductor because the high-impedance casing will cause only low-fault currents that are unable to trigger the fusible cut-out.

  3. ISO 7010 - Wikipedia

    en.wikipedia.org/wiki/ISO_7010

    ISO 7010 is an International Organization for Standardization technical standard for graphical hazard symbols on hazard and safety signs, including those indicating emergency exits. It uses colours and principles set out in ISO 3864 for these symbols, and is intended to provide "safety information that relies as little as possible on the use of ...

  4. Portable appliance testing - Wikipedia

    en.wikipedia.org/wiki/Portable_appliance_testing

    Health and safety regulations require that electrical appliances are safe and well maintained to prevent harm to workers. Many equipment manufacturers recommend testing at regular intervals to ensure continual safety, with the interval between tests varying based on both the type of appliance and the environment in which it is to be used.

  5. ISO 3864 - Wikipedia

    en.wikipedia.org/wiki/ISO_3864

    ISO 3864-1:2011 Part 1: Design principles for safety signs and safety markings [1] ISO 3864-2:2016 Part 2: Design principles for product safety labels [2] ISO 3864-3:2012 Part 3: Design principles for graphical symbols for use in safety signs [3] ISO 3864-4:2011 Part 4: Colorimetric and photometric properties of safety sign materials [4]

  6. Insulation system - Wikipedia

    en.wikipedia.org/wiki/Insulation_system

    Double insulation is a design concept where failure of one insulation system will not expose the user to a shock hazard due to the presence of a second independent layer of insulation. Reinforced insulation is a supplemental insulation system that is strong enough to effectively perform as if a double insulation system was present.

  7. Electrical wiring in North America - Wikipedia

    en.wikipedia.org/wiki/Electrical_wiring_in_North...

    Special wiring rules apply to wet or corrosive locations, [13] and to locations which present an explosion hazard. [14] Wiring materials for use in the United States must generally be made and tested to product standards set by NEMA and Underwriters Laboratories (UL) and must bear approval marks such as those set by UL.

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  9. Emergency eyewash and safety shower station - Wikipedia

    en.wikipedia.org/wiki/Emergency_eyewash_and...

    However, OSHA regulation is unclear defining what facility is required. From this reason, American National Standards Institute (ANSI) has developed a standard (ANSI/ISEA Z358.1-2014) for emergency eyewash and shower stations, including the design of such stations. [4] [5] In Europe, Safety Showers are governed by EN standard EN15154. [6]

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