![]() As such, this course can be used to satisfy the Professional Development Hour requirements set forth by most US State Boards and other licensure agencies or simply, to meet periodic employee training requirements. Sometimes this boundary is the furthest one from the exposed equipment, other times the limited approach boundary is the furthest out. This is an easy and affordable option that will allow. Most companies today will mark the different distances using floor marking tape. That’s the distance where a worker without appropriate PPE would receive second-degree burns. Whether you only measure off the prohibited section, or you measure all three levels as recommended by the NFPA, you will need to have a way to identify where the boundaries exist. This course is designed to serve as a tool for staying abreast of arc flash requirements with highlights of revisions adopted in 2021. The arc flash boundary is calculated to 1.2 calories/cm2 of incident energy. The core of the analysis is based on shock and arc flash boundaries which must be done by a qualified electrical engineer. NFPA 70 suggests that a hazard/risk analysis be conducted prior to working on electrical equipment. Arc flash ppe category level chart Nfpa 70e arc flash ppe chart Arc flash and shock hazard boundaries explained. Arc Flash labelling requirements and methodology are explained. NFPA 70E Table 130.4 (C) (a) Approach Boundaries to Energized Electrical Conductors or Circuit Parts for Shock Protection fo r Alternating Current. Some of this relates to thermography, which will be addressed later. Arc Flash terminology and respective definitions are reviewed. This is an extension of the changes made in the 2015 edition of NFPA 70E that looked to OSHA’s 29CFR1910. The three (3) approach boundaries are discussed and illustrated. PPE prescribed for the four (4) arc flash hazard classes, 1, 2, 3 and 4, is discussed. Value of arc flash risk analysis is covered, and recommended approach in the absence of a formal arc flash study is explained. ![]() Insofar as the relationship between an arc flash event and the electrical power distribution system is concerned, pertinent components such as fuses and breakers, and their role in initiation and mitigation of an arc are explained. The science behind the arc flash phenomenon is covered, coupled with discussion of potential causes for arc flash and properties of an electrical power distribution system. ![]() The course begins with an introduction to the general arc flash phenomenon. This course is intended to serve as an introduction, review and update on 2021 NFPA 70E based Arc Flash Standards and Requirements. This course caters to Professional Engineers, Non-Licensed Engineers, Technicians, Facilities Managers, and other professionals who are interested in enhancing their understanding of arc flash risk in their operations or those of their clients.
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