WAC 296-307-37203
WAC 296-307-37203. Scope
WAC 296-307-372 covers the requirements for electric equipment and wiring in locations that are classified based on the properties of the flammable vapors, liquids or gases, or combustible dusts or fibers that may be present and the likelihood that a flammable combustible concentration or quantity is present. Each room, section, or area must be considered individually to determine its classification.
All requirements in this part apply to hazardous locations, unless otherwise indicated.