Class, division, group, or zone. To professional electricians, these terms mean one thing: they're working in a hazardous location where flammable liquids, gases, dust, fibers or flyings are present.

To help electricians stay current on the latest hazardous location code changes, equipment and installation techniques, Appleton, Rosemont, Ill., has launched an online training program at www.appletonelec.com/Hazardous.htm.

This free step-by-step guide reviews the basics of hazardous locations, such as terminology and NEC classifications, plus offers advanced modules into the specifics of various applications.

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