All questions and answers are based on the 2014 NEC. Q. What is a Class I hazardous (classified) location? A. Locations are classified according to the properties of the flammable gases, flammable liquid-produced vapors, combustible liquid-produced vapors, combustible dusts, or fibers/flyings that may be present — and the likelihood that a flammable or combustible concentration will be present [500.5(A)]. Note: To reduce expensive equipment and expensive wiring methods, locate as much ...
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