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Is it Sufficient to Use NFPA 70E Tables in Place of an Arc Flash Hazard Study?


Under all circumstances, it is necessary to protect the working personal from dangers associated with live electricity installations. For this reason and to ensure compliance with the OSHA regulations, Arc flash hazard and electric shock hazards need to be evaluated and studied for every facility having an electrical installation.

An arc flash hazard can either be estimated using lookup tables given in the NFPA 70E guidelines or it can be calculated with much more accuracy by a calculation procedure outlined in the IEEE Standard 1584.

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