Lesson 3 Flashcards
Learning to love my father again
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.
Select one:
True
False
True
Which of the following can be thought of as the foundation of an electrical system?
Select one:
a. The electrical service equipment
b. The equipment grounding conductor
c. The grounding electrode conductor
d. The grounding electrode system
D.The grounding electrode system
Chapters 1 through 4 of the NEC apply ? . Select one: a. generally b. only to special conditions c. only to special equipment d. only to special occupancies
A.Generally
Chapters 5, 6, and 7 often modify or amend the general requirements in NEC chapters 1 through 7.
True or False
True
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.
True or False
False
Which of the following has the responsibility for approval of electrical installations and systems and interpreting NEC rules?
Select one:
a. The authority having jurisdiction (AHJ)
b. The electrical contractor
c. The engineer
d. The property owner
A. The AHJ
Informational notes in the NEC are applicable as rules and must be applied to the rule they follow.
Select one:
True
False
False
Exceptions to NEC rules apply only to the rule they follow, unless it is stated differently in the exception.
True
False
True
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. Select one: a. XXX.1 b. XXX.2 c. XXX.3 d. XXX.10
B.XXX.2
A(n) ? is defined as a reliable conductor that ensures continuity and conductivity between metal parts required to be electrically connected. Select one: a. bonding conductor or jumper b. equipment grounding conductor c. grounded conductor d. system bonding jumper
a. bonding conductor or jumper
A main bonding jumper is the connection between the grounded conductor and the equipment grounding conductor and is located at a separately derived system.
Select one:
True
False
False
When grounding is accomplished through a resistor, an impedance device, or a surge arrester, the grounding is considered to be solid.
True
False
False
A grounded conductor of a system could be a ? conductor or a phase conductor. Select one: a. bonding b. grounding c. neutral d. zero sequence
C.Neutral
Which of the following functions are performed by an equipment grounding conductor (EGC)?
Select one:
a. Bonding
b. Effective ground-fault current path
c. Grounding of equipment
d. All of the above
D.all the above
A supply side bonding jumper is required to be sized based on the overcurrent device protecting the circuit.
True
False
False
? of Article 250 specifically applies to grounding systems and circuits over 1,000 volts. Select one: a. Part I b. Part V c. Part IX d. Part X
D.Part X
Notes to NEC tables are enforceable as Code requirements.
True
False
True
What is the largest size aluminum grounding electrode conductor required by the NEC? Select one: a. 2/0 AWG b. 3/0 AWG c. 4/0 AWG d. 250 kcmil
D.250 Kcmil
How many equipment grounding conductors are required to be installed with branch circuits serving patient care spaces? Select one: a. 1 b. 2 c. 3 d. 4
B.2
Equipment grounding conductors installed with medium-voltage cables are generally required to be sized based on Table 250.122 and never smaller than ? copper. Select one: a. 2 AWG b. 4 AWG c. 6 AWG d. 8 AWG
C.6awg
What is the minimum-size copper equipment grounding conductor required for a 60-ampere branch circuit? Select one: a. 4 AWG b. 6 AWG c. 8 AWG d. 10 AWG
D.10 awg
Which part of Article 250 applies specifically to grounding DC systems? Select one: a. I b. III c. V d. VIII
D.VIII
Article 250 includes provisions that permit guards, isolation, or insulation as alternatives to grounding requirements.
True
False
True
Which of the following does not contain mandatory requirements in the NEC? Select one: a. Annexes b. Chapter 1 c. Chapter 2 d. Introduction
A.Annexes
According to the NEC Style Manual, if a term is used in more than two articles, it qualifies for inclusion in ? . Select one: a. Article 90 b. Article 250 c. Article 100 d. Chapter 9 Tables
C.Article 100
Requirements for installing AC grounding electrode conductors are provided in ? of Article 250.
a. Part I
b. Part III
c. Part IV
d. Part V
B.Part III
The minimum-size bonding conductor for metal parts associated with neon sign installations shall not be less than ? .
a. the minimum size required for the branch-circuit equipment grounding conductor
b. 12 AWG copper
c. 14 AWG aluminum
d. 14 AWG copper
D.14 awg copper
The minimum size required for a supply-side bonding jumper is provided in which of the following NEC tables? Select one: a. Figure 250.2 b. Table 250.66 c. Table 250.102(C)(1) d. Table 250.122
c. Table 250.102(C)(1)
NEC Table 250.66 is used for sizing all of the following except ? .
Select one:
a. bonding jumpers for the grounding electrode system
b. grounding electrode conductor(s) for AC services
c. grounding electrode conductors for separately derived systems
d. wire-type main bonding jumper(s)
d. wire-type main bonding jumper(s)
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? Select : a. 2 AWG aluminum b. 2 AWG copper c. 4 AWG copper d. 6 AWG copper
b. 2 AWG copper
What part of Article 250 covers grounding electrode conductors? Select one: a. Part I b. Part II c. Part III d. Part IV
c. Part III
If a grounding and bonding word or term appears in more than two NEC articles, it qualifies for placement in ?
a. .2 section of Article 250
b. Annex A
c. Article 100
d. Article 250
c. Article 100
Notes to NEC Tables are mandatory requirements.
Select one:
True
False
True
Which NEC Table provides grounding electrode conductor (GEC) sizes for communications systems covered in Article 800?
a. Table 250.66
b. Table 250.102(C)(1)
c. Table 250.122
d. No table required for sizing a communications systems GEC
d. No table required for sizing a communications systems GEC
A bonding conductor for a metal water piping system is sized using ? . Select one: a. Table 250.66 b. Table 250.102(C)(1) c. Table 250.122 d. Table 310.15(B)(16)
b. Table 250.102(C)(1)
Chapters 1 through 7 of the NEC can be modified or amended by the provisions of Chapters 5 through 7.
Select one:
True Correct
False
True
