![]() ![]() One who has demonstrated skills and knowledge related to the construction and operation of electrical equipment and installations and has received safety training to identify and avoid the hazards involved. – NFPA-70E-100Ī component of an arc flash risk assessment used to predict the incident energy of an arc flash for a specified set of conditions. Incident energy is typically expressed in calories per square centimeter (cal/cm2). The amount of thermal energy impressed on a surface, a certain distance from the source, generated during an electrical arc event. – NFPA 70E-100Ī dangerous condition such that contact of equipment failure can result in electric shock, arc flash burn, thermal burn, or blast. When an arc flash hazard exists, the Arc Flash Boundary is the approach limit at a distance from a prospective arc source within which a person could receive a second degree burn if an electrical arc flash were to occur. – OSHA Interpretation Letter – October 18, 2006Ī dangerous condition associated with the possible release of energy caused by an electric arc. Additionally, a national consensus standard, such as NFPA-70E, can sometimes be relevant to a general duty clause citation in the sense that the consensus standard may be used as evidence of hazard recognition and the availability of feasible means of abatement. While not formally adopted by OSHA, the electrical installation requirements and the electrical safety-related work practices in OSHA’s general industry standards in Subpart S – Electrical Work, are based on previous editions of 70E. The NFPA -70E: Standard for Electrical Safety in the Workplace, is a comprehensive standard authored by the Committee on Electrical Safety Requirements for Employee Workplaces, an electrical standards committee formally appointed by the National Fire Protection Association (NFPA) on January 7, 1976, to assist the Occupational Safety and Health Administration (OSHA) in preparing electrical safety standards that would serve OSHA’s needs, which would be promulgated through the provisions of Section 6(b) of the Occupational Safety and Health Act. What is the NFPA-70E, and who enforces it? Available incident energy and the corresponding working distance, or the PPE category as determined by Table 130.7(C). ![]() Per NFPA-70E-130.5(D) electrical equipment such as switchboards, panelboards, industrial control panels, meter socket enclosures, and motor control centers that are in other than dwelling units and are likely to require examination, adjustment, servicing, or maintenance while energized shall be field-marked with a label identifying: Arc Flash is the sudden release of energy caused by an electric arc.Īre Arc Flash Studies required for office buildings? Aren’t those only applicable to Industrial Applications? ![]()
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