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15 Cards in this Set
- Front
- Back
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What is the most common cause of building fires? The _______________ of electrical equipment |
Overheating |
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Class 1 division 1 is? |
Flammable gases or vapours, normal |
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Class 1 division 2 is? |
Flammable gases or liquids could be but not normally |
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Class 2 Division 1 is? |
Combustible dust in high concentrations normally |
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Class 2 Division 2 is? |
Combustible dust not normally in high concentrations |
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Class 3 Division 1 is? |
A place where easily ignited material fibers are manufactured |
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Class 3 Division 2 is? |
A place where easily ignited material fibers are stored or handled but not processed |
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Halons 1301 presents a hazard for exposures in concentrations above A. 4% B. 15% C. 25% D. 10% |
D. 10% |
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Halons 1211 presents a hazard for exposures in concentrations above A. 4% B. 15% C. 25% D. 10% |
A. 4% |
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Under the Canadian Electrical Code, if an area contains dust in the air under normal operating conditions in concentrations high enough to produce explosive or ignitable mixtures, the electrical equipment must be designed safe for use in an area classification of: A) Class 1, Division 2 B) Class 3, Division 1 C) Class 1, Division 1 D) Class 2, Division 2 E) Class 2, Division 1
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E) Class 2, Division 1 |
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Under the Canadian Electrical Code, if an area contains hazardous concentrations of flammable gases or vapors under normal operating conditions, electrical equipment must be designed safe for use in an area classification of: A) Class 2, Division 2 B) Class 1, Division 1 C) Class 1, Division 2 D) Class 3, Division 1 E) Class 2, Division 1
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B) Class 1, Division 1 |
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According to the Canadian Electrical Code, an area where easily ignited material fibers capable of producing combustible flyings are handled or manufactured, would be classified as a: A) Class 3, Division 1 B) Class 2, Division 2 C) Class 2, Division 1 D) Class 1, Division 2 E) Class 1, Division 1
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A) Class 3, Division 1 |
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The temperature of the carbon dioxide leaving the extinguisher horn can be as low as: A) -30ºC B) -60ºC C) -5ºC D) -80ºC E) 0ºC
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D) -80ºC |
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Temporary electrical hook ups should: A) Be designed to the original specifications B) Comply with ASME codes C) Be made with BX electrical cable D) Have CSA pre-approval E) Be in place for a maximum duration of 72 hours only |
A) Be designed to the original specifications |
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Halon from halon fire extinguishers: A) Will act as a conductor if moisture is present B) Is derived from bromine, fluorine or chlorine C) Is abrasive to electrical equipment D) Produces a distinct odor which warns of the presence of halon E) Is corrosive |
D) Produces a distinct odor which warns of the presence of halon |
