Lesson 3: Code Arrangement and Application

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

-Bonding -Creating an effective ground-fault current path -Grounding of equipment

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

10 AWG

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

14 AWG copper

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

2

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?

2 AWG copper

What is the largest size aluminum or copper-clad aluminum grounding electrode conductor required by the NEC?

250 kcmil

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

26,240

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

6 AWG

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

9

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

Annexes

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

Article 100

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

False

A supply-side bonding jumper is installed only at the service.

False

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

False

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

False

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

False

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

False

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

No table is required for sizing a communications system GEC

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

Part III

What part of Article 250 covers grounding electrode conductors?

Part III

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

Part VIII

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

Part X

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

Shall be permitted

A bonding conductor for a metal water piping system is sized using ? except that it does not have to be larger than 3/0 copper of 250 kcmil aluminum or copper-clad aluminum.

Table 250.102(C)(1)

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

Table 250.102(C)(1)

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

Table 250.122

Which NEC table provides information about sizing wire-type equipment grounding conductors?

Table 250.122

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

The authority having jurisdiction (AHJ)

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

The grounding electrode system

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

True

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

True

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

True

NEC Table 250.66 is used for sizing grounding electrode conductors and bonding jumpers used to form the grounding electrode system.

True

Notes to NEC tables are enforceable as Code requirements.

True

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.

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 (unless Section XXX.2 indicates that a defined term in this section could apply to other articles that use that term).

XXX.2

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

bonding conductor or jumper

Chapters 1 through 4 of the NEC apply ? .

generally

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

neutral

Which of the following is NOT permitted to identify an insulated grounded conductor of 6 AWG or smaller?

three continuous white or gray stripes along the conductor's entire length on green insulation

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

wire-type main bonding jumper(s)