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Describe Type d equipment.

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Type d equipment is permitted ...

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As a result of major changes to the 2011 Code, equipment marking designations for protection may be a prefix or suffix letter to indicate D for dust, G for gas, and M for mining.

A) True
B) False

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What are the steps in wiring a hazardous location?

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The first step for wiring in a hazardous...

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One of the major changes to the 2011 Code is that a new definition was added for ____________________ dust.

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What happens to ignition gases during an internal explosion?

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The high pressure developed du...

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An area is considered hazardous because of the highly flammable nature of a vapor, gas, dust, or solid material that may be easily ignited to cause fire or an explosion.

A) True
B) False

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Class I is separated into which three zones?

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Zone 0, Zo...

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What is the meaning of 'Zone2/1'?

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'Zone2/1' implies that a devic...

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Class I locations are characterized by flammable flyings and fibers.

A) True
B) False

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False

Class ____________________ is characterized by flammable dust.

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The division line between hazardous and non-hazardous may be a physical barrier, or it may simply be a distance limit.

A) True
B) False

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An example of an enclosure marking may be Zone 1, AEx, d, IIA, T4, Gb.What is the meaning of 'Gb,?

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'G' stands for gas, ...

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Extra care must be taken to make sure the grounding path in a hazardous location is of ____________________ impedance.

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Describe type n equipment, and list its three subcategories.

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Equipment that is provided with type n p...

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A Division 1 area is one in which, under normal operating conditions, a hazardous material is present in dangerous quantities only because of accidental spills or other unusual circumstances.

A) True
B) False

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Equipment type ____________________ is purged and pressurized.

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Type ___________________ equipment is known as increased safety equipment.

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e

Type ____________________ is intrinsically safe equipment intended for use in Zone 0.

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Flameproof protection is identified by the letter ____________________.

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d

A Division ___________________ area is one in which the hazardous material is likely to be present.

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