A classified electrical hazardous zone is defined as an area where fire or explosion hazards may exist due to flammable substances. Examples include places like refineries and chemical plants. Options B and C do not accurately describe the high-risk nature of these zones. ;
The correct answer is A: An area where fire or explosion hazards may exist due to the presence of flammable substances. Classified electrical hazardous zones are critical for safety in environments where flammable materials are present. Understanding these zones helps prevent potential disasters caused by electrical equipment in hazardous situations.
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