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2. Lockout–tagout - Wikipedia

   en.wikipedia.org/wiki/Lockout–tagout

   In industry this is an OSHA standard, as well as for electrical NFPA 70E. OSHA's standard on the Control of Hazardous Energy (Lockout-Tagout), found in 29 CFR 1910.147, [3] spells out the steps employers must take to prevent accidents associated with hazardous energy. The standard addresses practices and procedures necessary to disable ...

3. Occupational Safety and Health Administration - Wikipedia

   en.wikipedia.org/wiki/Occupational_Safety_and...

   Federal agencies must have a safety and health program that meets the same standards as private employers. OSHA issues “virtual fines” to federal agencies – following an inspection where violations are found, OSHA issues a press release stating the size of the fine would be if the federal agency were a private sector employer.

4. National Electrical Code - Wikipedia

   en.wikipedia.org/wiki/National_Electrical_Code

   These are examples of "national recognized testing laboratories" (NRTL) approved by the U.S. Department of Labor's Occupational Safety and Health Administration (OSHA) under the requirements of 29 CFR 1910.7. [9] Only a listed device can carry the listing brand (or "mark") of the listing agency.

5. Electrical equipment in hazardous areas - Wikipedia

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

   Unlike ATEX which uses numbers to define the safety "Category" of equipment (namely 1, 2, and 3), the IEC continued to utilise the method used for defining the safe levels of intrinsic safety namely "a" for zone 0, "b" for zone 1 and "c" for zone 2 and apply this Equipment Level of Protection to all equipment for use in hazardous areas since ...

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7. Earthing system - Wikipedia

   en.wikipedia.org/wiki/Earthing_system

   An earthing system (UK and IEC) or grounding system (US) connects specific parts of an electric power system with the ground, typically the equipment's conductive surface, for safety and functional purposes. [1] The choice of earthing system can affect the safety and electromagnetic compatibility of the installation.