An area adjacent to a Division 1 location into which volatile gases might occasionally flow should be designated ___. - correct answer -Division 2
A grinding area would most likely be designated as ___. - correct answer -Class II, Division 1
A cotton textile mill would most likely be designat...
NCCER Electrical Level 3 Module 4 Exam 2023 with 100% correct answers
An area adjacent to a Division 1 location into which volatile gases might occasionally flow should be designated ___. - correct answer -Division 2
A grinding area would most likely be designated as ___. - correct answer -Class II, Division 1
A cotton textile mill would most likely be designated as ___. - correct answer -Class III
A Class II atmosphere containing charcoal or coal dust would most likely be designated as ___. - correct answer -Group F
Which of the following is true with regard to ignition? - correct answer -Volatile vapors will not cause ignition if diluted below the lower explosion limit.
Explosion-proof equipment is rated by both classification and ___. - correct answer -temperature
How many classification(s) of hazardous atmospheres are listed in the NEC? - correct answer -Three
How many division(s) are there for each hazardous atmosphere classification? - correct answer -Two
How many group(s) are listed under Class I, Division I? - correct answer -Four
Which of the following are the groups listed under Class II, Division 1? - correct answer -E,F,G
When installing circuit breakers in Class II, Division 1 hazardous locations, a ___. - correct answer -dust/ignition-proof enclosure must be used
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