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Definitions (24)

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Arc flash


Arc flash is the passage of current through air between phase conductors or phase conductors and neutral and ground. This is initiated by a flashover, or from the introduction of some conductive material. Temperatures from an arc flash can reach 35,000 degrees Fahrenheit. Exposure to an arc flash can severely burn skin and ignite clothing.
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calorie


Amount of energy required to raise the temperature of one gram of water one Celsius degree.
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Electrical Safety


Electrical safety is the practice of recognizing and taking the action steps necessary for being in the presence of electrical energy. Electrical safety involves taking precautions in order for hazards not to cause injury or death. According to NFPA 70E, employers must implement and document an overall electrical safety program, directing activity [..]
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Flashover


A flashover is an electric discharge over or around the surface of an insulator. This happens when the ignition of smoke or fumes from surrounding objects causes the unexpected and rapid spread of fire through the air.
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High voltage


According to the NEC (National Electrical Code), high voltage is any voltage over 600V, and this is the cutoff used by e-Hazard for training purposes. There are differences of opinion, however; the IEEE (Institute of Electrical and Electronics Engineers) considers over 1000V to be high voltage for alternating current (AC) and at least 1500 V as hig [..]
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Low Voltage


According to the NEC (National Electrical Code), refers to voltage with less than 600 volts of electricity (see High Voltage definition above).
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NEC


The National Electrical Code (NEC), published by the National Fire Protection Association (NFPA), is the benchmark of safe electrical design, installation and inspection to protect people and property from electrical hazards. It addresses the installation of conductors, equipment and raceways in the electrical and communications industries and opti [..]
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NESC


Published by the IEEE (Institute of Electrical and Electronics Engineers) the National Electrical Safety Code (NESC) sets the ground rules for the practical safeguarding of persons during the installation, operation or maintenance of electric supply and communication lines and associated equipment. It contains the basic provisions considered necess [..]
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Operators


Unqualified workers who operate equipment or machinery and have become task qualified for a specific electrical task.
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OSHA


The Occupational Health and Safety Administration (OSHA) is a federal agency operating under the U.S. Department of Labor. The mission of OSHA is to ensure businesses provide safe and healthy working environments for all their employees. OSHA creates standards for health and safety in the workplace, and investigates businesses to enforce compliance [..]
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