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Design a Safer System 42 2. Use and Upgrade to Current-limiting ... In the year 2002, work injuries cost Americans $14. billion. ... to the hazards of shock, arc flash and arc blast. Eliminating and/or reducing these hazards require a basic knowledge of electric circuits. The following is a brief overview.

– Will include design of entirely new electrical system • i.e. new building – Designer shall complete full Arc Flash Study (SKM model) per Duke University Design Guidelines website – 16570 – Arc-Flash Studies – Labels must be applied prior to building acceptance – SKM model must be turned over to FMD

flash hazard mitigation. The recognition of arc flash as a unique electrical hazard has led to a new expectation for circuit protection devices: the safeguarding of personnel from the hazards of thermal burns and explosive blasts. Arc-flash hazards have changed the design rules for the analysis and protection of power systems.