ch 3

Question 1

The purpose of the NEC is to provide electrical installation requirements that protect persons and property from electrical hazards arising from the use of electricity.

Answer 1

true

Question 2

Which of the following can be thought of as the foundation of an electrical system?

Answer 2

The grounding electrode system

Question 3

Chapters 1 through 4 of the NEC apply ? .

Answer 3

generally

Question 4

Chapters 5, 6, and 7 often modify or amend the general requirements in NEC chapters 1 through 7.

Answer 4

true

Question 5

Chapter 8 in the NEC is independent of the other articles, and none of the rules in the rest of the NEC applies to communications systems.

Answer 5

false

Question 6

Which of the following has the responsibility for approval of electrical installations and systems and interpreting NEC rules?

Answer 6

The authority having jurisdiction (AHJ)

Question 7

Informational notes in the NEC are applicable as rules and must be applied to the rule they follow.

Answer 7

false

Question 8

Exceptions to NEC rules apply only to the rule they follow, unless it is stated differently in the exception.

Answer 8

true

Question 9

Permissive requirements in the NEC are characterized by which of the following words or terms?

Answer 9

Shall be permitted

Question 10

The NEC is made up of an introduction and ? chapters.

Answer 10

9

Question 11

Article 100 of the NEC contains defined terms used in two or more articles, and Section ? of an article often contains defined terms contained only within that article.

Answer 11

xxx.2

Question 12

A(n) ? is defined as a reliable conductor that ensures continuity and conductivity between metal parts required to be electrically connected.

Answer 12

bonding conductor or jumper

Question 13

A main bonding jumper is the connection between the grounded conductor and the equipment grounding conductor and is located at a separately derived system.

Answer 13

false

Question 14

When grounding is accomplished through a resistor, an impedance device, or a surge arrester, the grounding is considered to be solid.

Answer 14

false

Question 15

A grounded conductor of a system could be a ? conductor or a phase conductor.

Answer 15

neutral

Question 16

Which of the following functions are performed by an equipment grounding conductor (EGC)?

Answer 16

Bonding

Effective ground-fault current path

Grounding of equipment

Question 17

A supply side bonding jumper is required to be sized based on the overcurrent device protecting the circuit.

Answer 17

false

Question 18

Which of the following is not permitted to be used to identify a grounded conductor?

Answer 18

green

Question 19

? of Article 250 specifically applies to grounding systems and circuits over 1,000 volts.

Answer 19

part X

Question 20

NEC Table ? is required to be used for minimum sizing of equipment grounding conductors for branch circuits and feeders.

Answer 20

250.122

Question 21

Notes to NEC tables are enforceable as Code requirements.

Answer 21

true

Question 22

What is the largest size aluminum grounding electrode conductor required by the NEC?

Answer 22

250 lcmil

Question 23

How many equipment grounding conductors are required to be installed with branch circuits serving patient care spaces?

Answer 23

2

Question 24

Equipment grounding conductors installed with medium-voltage cables are generally required to be sized based on Table 250.122 and never smaller than ? copper.

Answer 24

6 AWG

Question 25

What is the minimum-size copper equipment grounding conductor required for a 60-ampere branch circuit?

Answer 25

10 AWG

Question 26

Which part of Article 250 applies specifically to grounding DC systems?

Answer 26

VIII

Question 27

Article 250 includes provisions that permit guards, isolation, or insulation as alternatives to grounding requirements.

Answer 27

true

Question 28

Which of the following does not contain mandatory requirements in the NEC?

Answer 28

annexes

Question 29

According to the NEC Style Manual, if a term is used in more than two articles, it qualifies for inclusion in ? .

Answer 29

article 100

Question 30

Requirements for installing AC grounding electrode conductors are provided in ? of Article 250.

Answer 30

part III

Question 31

The minimum-size bonding conductor for metal parts associated with neon sign installations shall not be less than ? .

Answer 31

14 AWG copper

Question 32

The minimum size required for a supply-side bonding jumper is provided in which of the following NEC tables?

Answer 32

Table 250.102(C)(1)

Question 33

NEC Table 250.66 is used for sizing all of the following except ? .

Answer 33

wire-type main bonding jumper(s)

Question 34

If a service is supplied with 300 kcmil copper ungrounded service conductors, what is the minimum size required for a wire-type supply-side bonding jumper?

Answer 34

2 AWG copper

Question 35

What part of Article 250 covers grounding electrode conductors?

Answer 35

part III

Question 36

If a grounding and bonding word or term appears in more than two NEC articles, it qualifies for placement in ? .

Answer 36

article 100

Question 37

Notes to NEC Tables are mandatory requirements.

Answer 37

true

Question 38

Which NEC Table provides grounding electrode conductor (GEC) sizes for communications systems covered in Article 800?

Answer 38

No table required for sizing a communications systems GEC

Question 39

A bonding conductor for a metal water piping system is sized using ? .

Answer 39

Table 250.102(C)(1)

Question 40

Chapters 1 through 7 of the NEC can be modified or amended by the provisions of Chapters 5 through 7.

Answer 40

true

Question 41

What is the circular mil area of a 6 AWG copper conductor?

Answer 41

26,240

table 8 ch 9