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.

An arc flash audit is an analysis of arc flash hazard and risk, focusing on compliance to all standards, including NFPA 70E, OSHA, and NESC. The audit uncovers areas of noncompliance and includes recommendations for improvements in order to meet the required standards.

Engineering calculations, or modeling, determine the arc flash protection boundary and the incident energy level exposure to workers, as part of an arc flash hazard assessment. The generally accepted method of calculation is a nine-step process outlined in the IEEE 1584 Guide for Performing Arc-Flash Hazard Calculations. This is a complicated proce [..]

(See Arc Flash Study)

An arc flash study (also called an arc flash analysis or a hazard analysis) is a study investigating a worker's potential exposure to arc flash energy, conducted for the purpose of injury prevention, the determination of safe work practices and arc flash boundary, and the appropriate levels of personal protective equipment (PPE).

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

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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(See Hazard/Risk Assessment) An on-site examination, customized to a workplace facility, in order to verify the principles and procedures of an electrical safety program are being adhered to and are in compliance with NFPA 70E/CSA Z462 and OSHA1910/1926 standards. If the ESP is not being followed, revisions to the training program or procedures mus [..]

Energized work refers to work being done on "live" parts, also known as a source of voltage, potentially exposing the worker to any hazard they present.