March/April 2010

ISA Certified Automation Professional (CAP) program

Certified Automation Professionals (CAPs) are responsible for the direction, design, and deployment of systems and equipment for manufacturing and control systems.

CAP question

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

CAP answer

The correct answer is D. 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.

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