Course Summary:

Understanding Electrical Area Classification and Hazardous Area Wiring

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  • Area Electrical Classification Definition, Basics, and Details
  • Zones – IEC vs. NEC Differences
  • Steps in Classifying Areas
  • Codes
  • Explosion Proofing
  • Seals
  • Intrinsically Safe Systems
  • Non-Incendive Systems
  • Purging and Pressurization
  • Miscellaneous Protection Systems
  • Commissioning and Maintenance


Engineers and scientists involved in classifying hazardous locations and specifying safe equipment installations within hazardous locations will learn the essentials and critically examine proven procedures for safe operation. The course will be especially valuable to those involved in classifying hazardous areas and installing equipment within hazardous areas in the following industries:

  • Chemical, petrochemical, agrichemical, and specialty chemical
  • Refining
  • Biotechnology, biochemical, and fermentation
  • Pharmaceuticals and cosmetics
  • Food processing


During the course, you will:

  • Review the basic principles of ignition and flammable properties of gases and liquids
  • Develop classification drawings
  • Learn how to take advantage of explosion-proof seals and enclosures
  • Examine the design of purges and pressurized systems for equipment enclosures and control rooms
  • Learn how to specify the proper NEMA/IEC enclosures for different location classifications
  • Review commissioning and maintenance checklists


By participating in this course, you will earn 14 Professional Development Hours (PDH) and 1.4 Continuing Education Units (CEU). Learn more about PDH, LU, CEU and state licensing boards.

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