Understanding how NFPA 70 categorizes hazardous locations into classes and divisions is key to effectively preparing to pass your electrical exam. Can you locate the code reference that governs how the following location is classified?
Question:
A location in which volatile flammable gases, flammable liquid produced vapors, or combustible liquid produced vapors are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers can best be described as which of the following:
A. Class I, Division 1
B. Class I, Division 2
C. Class II, Division 1
D. Class II, Division 2
Solution:
B. Class I, Division 2
Refer to NFPA 70 500.5(B)(2)(1) Classifications of Locations.
This reference indicates that a Class I, Division 2 location is a location in which volatile flammable gases, flammable liquid produced vapors, or combustible liquid–produced vapors are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers.
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