This post was authored by Joel Don, ISA's social media community manager.

This automation industry quiz question comes from the ISA Certified Automation Professional (CAP) certification program. ISA CAP certification provides a non-biased, third-party, objective assessment and confirmation of an automation professional's skills. The CAP exam is focused on direction, definition, design, development/application, deployment, documentation, and support of systems, software, and equipment used in control systems, manufacturing information systems, systems integration, and operational consulting. Click this link for more information about the CAP program.

Nonincendive-rated field wiring is allowed to be used in which of the following combinations of hazardous area classifications?

a) Class 1, Division 2 and Class 1, Zone 0
b) Class 1, Division 1; Class 1, Division 2; Class 1, Zone 1 and Class 1, Zone 2
c) Class 1, Division 2; Class 1, Zone 1 and Class 1, Zone 2
d) Class 1, Division 2; Class 1, Zone 2 and Non-hazardous
e) none of the above

Click Here to Reveal the Answer

Nonincendive is allowed in Class 1, Division 2; Class 1, Zone 2, and Non-hazardous rated areas. Use in higher hazard areas, such as Division 1, Zone 1, or Zone 0 areas, is not allowed.

The correct answer is D.

Reference: NFPA 70, National Electrical Code 2005 or 2008.

About the Author
Joel Don is the community manager for ISA and is an independent content marketing, social media and public relations consultant. Prior to his work in marketing and PR, Joel served as an editor for regional newspapers and national magazines throughout the U.S. He earned a master's degree from the Medill School at Northwestern University with a focus on science, engineering and biomedical marketing communications, and a bachelor of science degree from UC San Diego.

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