NCCER Introduction To The National Electrical Code (26105-20) Practice Test

A paint spray booth area would be classified as which class of hazardous location?

Class 2 Class 1 Class 3 Class 4

Correct Answer:

Class 1

Explanation:

Hazardous-location classifications are based on what can become ignitable in the air. A paint spray booth releases flammable vapors from solvents and paint, which can form a flammable mix in the surrounding air. That makes the area a Class I location, which covers locations with flammable gases or vapors. Within Class I, divisions differentiate whether vapors are present during normal operation (Division 1) or only under abnormal conditions (Division 2). The other classes address different hazards—Class II for combustible dust and Class III for ignitable fibers or flyings, with Class IV not typically applicable here. So, a paint spray booth is classified as Class I.

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