Code, Standards, and Practices 1, Based on the 2020 NEC Online Materials: Lesson 2 Interpreting the Language of the NEC—Article 100

Question 1

According to the NEC, a(n) ? is defined as “one who has skills and knowledge related to the construction and operation of the electrical equipment and installations and has received safety training to recognize and avoid the hazards involved.”
Select one:

a. craftsman

b. electrician

c. experienced person

d. qualified person

Answer 1

qualified person

Question 2

Premises wiring, by definition, would include wiring internal to an appliance located in a premises.
Select one:
True
False

Answer 2

False

Question 3

A structure that stands alone, or that is separated from adjoining structures by firewalls, is defined as a(n) ? .
Select one:

a. building

b. cabinet

c.dwelling

d. enclosure

Answer 3

Building

Question 4

Which of the following would accessible (as applied to wiring methods) be applicable to by definition?
Select one:

a.Installation not guarded by locked doors

b.Installation of a luminaire

c.Installation of a motor

d. Installation of electrical metallic tubing (EMT)

Answer 4

Installation of electrical metallic tubing (EMT)

Question 5

Which of the following would be defined as readily accessible?
Select one:

a. A circuit breaker in an unlocked distribution panel

b.A junction box installed above a lift-out ceiling

c. A receptacle installed in the ceiling of a garage for a garage door opener

d. Wires installed in a surface-mounted raceway

Answer 5

A circuit breaker in an unlocked distribution panel

Question 6

It is necessary to remove part of a sheetrock wall to remove and replace a run of nonmetallic-sheathed cable. Therefore, the nonmetallic-sheathed cable is considered to be ? by definition.
Select one:

a. accessible

b. not accessible

c. readily accessible

Answer 6

not accessible

Question 7

The definition of exposed has a different meaning when applied to wiring methods than when applied to live parts.
Select one:
True
False

Answer 7

True

Question 8

Which of the statements is/are true by definition?
Select one:

a. A pull box above a lift out ceiling is accessible, but not readily accessible.

b. Electrical equipment shall be considered readily accessible to those to whom ready access is requisite when it is capable of being reached quickly for operation by using a portable ladder.

c. Both a. and b.

d. Neither a. nor b.

Answer 8

A pull box above a lift out ceiling is accessible, but not readily accessible.

Question 9

Which of the following conduit installations would not be considered an accessible wiring method?
Select one:

a. Installed above a lift-out ceiling

b. Installed in concrete

c. Installed on the surface of a brick wall outdoors

d. Installed on the surface of a wall indoors, 10’ above floor level

Answer 9

Installed in concrete

Question 10

Concealed, by definition, means the equipment or wiring method is ? .
Select one:

a. installed in a locked room

b. installed out of sight

c. installed underground

d. rendered inaccessible by the structure of the building

Answer 10

rendered inaccessible by the structure of the building

Question 11

The back of a switchboard is open where an individual could walk up and touch an energized bus. The buses would be exposed, by definition.
Select one:
True
False

Answer 11

True

Question 12

NEC 230.70(A)(1) requires the service disconnecting means to be installed at a(n) ? location.
Select one:

a. acceptable

b. accessible

c. approved

d. readily accessible

Answer 12

readily accessible

Question 13

A bathroom is defined as an area including a sink (basin) and a(n) ? or similar plumbing fixtures.
Select one:

a. bidet

b. shower

c. toilet

d. tub

e. urinal

f. any of the above

Answer 13

any of the above

Question 14

Section 314.29 generally requires junction boxes to be installed so that the wire contained within the junction box is ? .
Select one:

a.acceptable

b. accessible

c. approved

d. readily accessible

Answer 14

accessible

Question 15

NEC 330.10(A) recognizes the use of metal-clad cable for exposed or concealed installations.
Select one:
True
False

Answer 15

True

Question 16

Approved is defined as ? to the authority having jurisdiction.
Select one:

a. acceptable

b.accessible

c. approved

d. readily accessible

Answer 16

acceptable

Question 17

All listing is required by the Code to be done by Underwriters Laboratories.
Select one:
True
False

Answer 17

False

Question 18

Which statement(s) is/are true when applied to identifying equipment in accordance with the definition of identified?
Select one:

a. Electrical equipment can be identified for a specific use.

b. Electrical equipment can be identified for use in a specific environment.

c. Both a. and b.

d. Neither a. nor b.

Answer 18

Both a. and b.

Question 19

Listed means that equipment, materials, or services ? .
Select one:

a.have been tested and found suitable for a specified purpose

b.meet appropriate designated standards

c.both a. and b.

d.either a. or b.

Answer 19

either a. or b.

Question 20

If equipment is identified, it is by definition recognizable as suitable for the specific purpose, function, use, environment, application, and so forth, where described in a particular Code requirement.
a. True
b. False

Answer 20

True

Question 21

Section 110.2 indicates conductors required by the Code are acceptable only if ? .
Select one:

a.approved

b.accessible

c.identified

d.specified

Answer 21

approved

Question 22

Section 424.58 requires duct heaters installed in air ducts to be ? suitable for the installation.
Select one:

a.approved and

b.accessible and

c.identified as

d.specified as

Answer 22

identified as

Question 23

The identifying term used to indicate a piece of electrical equipment is isolated would be ? .
Select one:

a.buried

b.hidden

c.not accessible

d.not readily accessible

Answer 23

not readily accessible

Question 24

By definition, which statement is correct regarding automatic function and nonautomatic function?
Select one:

a.A nonautomatic function does not require human intervention.

b.A nonautomatic function requires human intervention.

c.An automatic function requires human intervention.

d.None of the above.

Answer 24

A nonautomatic function requires human intervention.

Question 25

When a suitable fence is installed around a switchyard, the switchyard is said to be ? , by definition.
Select one:

a.contained

b.guarded

c.identified

d.isolated

Answer 25

guarded

Question 26

By definition, which of the following is not considered a dwelling?
Select one:

a.Guest room

b.Multifamily building

c.One-family house

d.Two-family house

Answer 26

Guest room

Question 27

Section 110.18 requires all arcing parts of electrical equipment to be enclosed or separated, and ? from all combustible material.
Select one:

a.barricaded

b.guarded

c.isolated

d.removed

Answer 27

isolated

Question 28

NEC 110.27(A) requires live parts of electrical equipment operating at 50 volts or more to be ? against accidental contact.
Select one:

a.barricaded

b.guarded

c.insulated

d.isolated

Answer 28

guarded

Question 29

Electrical equipment that is ? is electrically connected to, or is, a source of voltage, by definition.
Select one:

a.energized

b.guarded

c.insulated

d.isolated

Answer 29

energized

Question 30

? is defined as connected to ground without inserting any resistor or impedance device.
Select one:

a.Insulated ground

b.Isolated grounding

c.Low impedance grounding

d.Solidly grounded

Answer 30

Solidly grounded

Question 31

A(n) ? rating is defined as the highest current at rated voltage that a device is identified to interrupt under standard test conditions.
Select one:

a.interrupting

b.OCPD

c.overcurrent

d.trip current

Answer 31

interrupting

Question 32

Definitions appearing in only one article of the NEC are typically located in which section of that article?
Select one:

a.First (XXX.1)

b.Second (XXX.2)

c.Third (XXX.3)

d.Fourth (XXX.4)

Answer 32

Second (XXX.2)

Question 33

An intersystem bonding termination is defined as a device that provides a means for connecting intersystem bonding conductors for communications systems to the ? .
Select one:

a.bonding conductor

b.equipment grounding conductor

c.grounding electrode system

d.telecommunication primary protector

Answer 33

grounding electrode system