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  2. Extra-low voltage - Wikipedia

    en.wikipedia.org/wiki/Extra-low_voltage

    The single-phase voltage is 110 V a.c. though having a "centre tapped Earth" reducing the voltage to earth to 55 V AC. The three-phase system is 110 V phase-to-phase and 63 V to neutral / earth. This system voltage is slightly above the ELV limit, but is still very commonly used for cord-powered hand tools and temporary lighting in hazardous areas.

  3. Life Safety Code - Wikipedia

    en.wikipedia.org/wiki/Life_Safety_Code

    The publication Life Safety Code, known as NFPA 101, is a consensus standard widely adopted in the United States. [according to whom?] It is administered, trademarked, copyrighted, and published by the National Fire Protection Association and, like many NFPA documents, is systematically revised on a three-year cycle.

  4. Standards for Alarm Systems, Installation, and Monitoring

    en.wikipedia.org/wiki/Standards_for_Alarm...

    The standard details requirements for a range of alarm systems including central station burglar alarms, police station connected alarms, local alarms, proprietary systems, holdup alarms, and digital alarm communicator system units. It also covers power supplies essential for burglar-alarm equipment operation.

  5. National Electrical Code - Wikipedia

    en.wikipedia.org/wiki/National_Electrical_Code

    The National Electrical Code (NEC), or NFPA 70, is a regionally adoptable standard for the safe installation of electrical wiring and equipment in the United States. It is part of the National Fire Code series published by the National Fire Protection Association (NFPA), a private trade association . [ 1 ]

  6. Hydrogen safety - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_safety

    NASA also references Safety Standard for Hydrogen and Hydrogen Systems [110] and the Sourcebook for Hydrogen Applications. [ 111 ] [ 106 ] Another organization responsible for hydrogen safety guidelines is the Compressed Gas Association (CGA) , which has a number of references of their own covering general hydrogen storage, [ 112 ] piping ...

  7. NEMA enclosure types - Wikipedia

    en.wikipedia.org/wiki/NEMA_enclosure_types

    Certified and labelled for use in areas with specific hazardous conditions: for indoor and outdoor use in locations classified as Class II, Groups E, F, or G as defined in NFPA standards such as the NEC. 10: MSHA. Meets the requirements of the Mine Safety and Health Administration, 30 CFR Part 18 (1978). 11: General-purpose.

  8. These Batch Cosmos Are Made to Serve a Crowd - AOL

    www.aol.com/batch-cosmos-made-serve-crowd...

    Combine the vodka, cranberry juice, lime juice, and triple sec in a pitcher filled with ice. Stir well until chilled, then strain through a fine mesh strainer or slotted spoon into 4 martini or ...

  9. Electrical equipment in hazardous areas - Wikipedia

    en.wikipedia.org/wiki/Electrical_equipment_in...

    In the US, the independent National Fire Protection Association (NFPA) publishes several relevant standards, and they are often adopted by government agencies. Guidance on assessment of hazards is given in NFPA 497 (explosive gas) and NFPA 499 (dust). The American Petroleum Institute publishes analogous standards in RP 500 and RP505.