General Electrical Requirements, Definitions, Services, and Branch Circuits and Feeder Requirements

Where a grounding electrode is made of stainless steel rod, the rod shall be a minimum of ______ in diameter and a minimum of ______ in length unless listed. a. 1/2 inch; 8 feet b. 1/2 inch; 10 feet c. 5/8 inch; 8 feet d. 5/8 inch; 10 feet

c. 5/8 inch; 8 feet Sec. E3608.1.4, #2

The dedicated indoor space above an electrical panelboard shall be a minimum of ______ high or to the structural ceiling, whichever is lower. a. 4 feet b. 5 feet c. 6 feet d. 6.5 feet

c. 6 feet Sec. E3405.3

An overcurrent protection device shall be installed so that the center of the grip of the operating handle of the switch or circuit breaker, when in its highest position, is located a maximum of ______ above the floor or working platform. a. 5 feet, 0 inches b. 6 feet, 4 inches c. 6 feet, 7 inches d. 7 feet, 0 inches

c. 6 feet, 7 inches Sec. E3705.7, #6

Which one of the following ratings is not a standard ampere rating for fuses and inverse time circuit breakers? a. 25 amperes b. 50 amperes c. 75 amperes d. 100 amperes

c. 75 amperes Sec. E3705.6

Insulated grounded conductors of sizes 6 AWG and smaller may be identified by all but which one of the following methods? a. continuous white outer finish b. continuous gray outer finish c. continuous black outer finish d. three continuous white stripes (on other than green insulation)

c. continuous black outer finish Sec. E3407.1

Electrical panelboards and overcurrent devices shall not be located in ______.

clothes closets, bathrooms or over the steps of a stairway Sec. E3405.5

Bonding shall be provided where necessary to the ensure electrical ______.

continuity Sec. E3609.1

Branch Circuit ratings for space-heating and water-heating appliances shall be considered ______ loads.

continuous Sec. E3702.10

A plate electrode installed as part of a grounding electrode system shall be located a minimum of ______ inches below the surface of the earth. a. 12 b. 18 c. 24 d. 30

d. 30 Sec. E3608.1.5

An overhead service conductor shall have a minimum clearance above a 3:12 roof of ______. a. 3 feet b. 6 feet c. 7 feet d. 8 feet

d. 8 feet Sec. E3604.2.1

Electrical service disconnecting means shall not be installed in ______. a. storage closets b. laundry rooms c. sleeping rooms d. bathrooms

d. bathrooms Sec. E3601.6.2

In general, which of the following continuous colors is permitted for the insulation on ungrounded conductors? a. gray b. white c. green d. red

d. red Sec. E3407.3

A minimum of ______ branch circuit(s) shall be provided to serve receptacles located in the kitchen, pantry, breakfast area and dining area. a. one 15-ampere-rated b. one 20-ampere-rated c. two 15-ampere-rated d. two 20-ampere-rated

d. two 20-ampere-rated Sec. E3703.2

The markings for identification of disconnecting means shall have the durability to withstand the ______ involved.

environment Sec. E3404.12, #4

A minimum of ______ branch circuit shall be provided to supply the bathroom receptacle outlet(s). Such circuits shall have no other outlets.

one 20-amp Sec. E3703.4

A minimum of ______ 20-ampere-rated branch circuits shall be provided to serve all wall and floor receptacle outlets located in the kitchen, pantry, breakfast area, dining area or similar area of a dwelling.

two Sec. E3703.2

A minimum of one ______-ampere-rated branch circuit shall be provided for receptacles located in the laundry area and shall serve only receptacle outlets in the laundry area.

20 Sec. E3703.3

Interior metal water piping located more than ______ feet from the point of entrance to the building shall not be used as part of the grounding electrode system.

5 Sec. E3608.1.1.1

Overhead service-drop conductors shall have a vertical clearance of not less than ______ feet above the roof surface.

8 Sec. E3604.2.1

Rod and pipe electrodes shall be not less than ______ feet in length.

8 Sec. E3608.1.4

Above-ground service-entrance cables subject to physical damage shall be protected by Schedule ______ PVC conduit.

80 Sec. E3605.5

The rating of any one cord-and-plug-connected utilization equipment shall not exceed ______ percent of the branch-circuit ampere rating.

80 Sec. E3702.3

Conductors in NM cable assemblies shall be rated at ______°C.

90 Sec. E3705.4.4

Connected to establish electrical continuity and conductivity.

Bonded (Bonding)

In the calculation of electrical feeder loads, an electric clothes dryer load shall be considered ______ VA for each dryer circuit or the nameplate rating load of each dryer, whichever is greater. a. 4,000 b. 5,000 c. 5,500 d. 6,000

b. 5,000 Table E3704.2(1)

Where more than one rod, pipe or plate electrode is used in one grounding electrode system, each electrode shall be located a minimum of ______ from any other electrode of another grounding system. a. 5 feet b. 6 feet c. 10 feet d. 20 feet

b. 6 feet Sec. E3608.3

Where electrical conductors are to be spliced, terminated or connected to fixtures or devices, a minimum length of ______ of free conductor shall be provided at each outlet, junction or switch point. a. 4 inches b. 6 inches c. 8 inches d. 12 inches

b. 6 inches Sec. E3406.11.3

The minimum size of electrical conductors for feeders and branch circuits, when of copper, shall be ______ AWG. a. No. 16 b. No. 14 c. No. 12 d. No. 10

b. No. 14 Sec. E3406.3

A minimum of ______ branch circuit(s) shall be provided for receptacles located in the laundry room and a minimum of ______ branch circuit(s) shall be provided to supply the bathroom receptacle outlet(s). a. one 15-ampere-rated; one 15-ampere-rated b. one 20-ampere-rated; one 20-ampere-rated c. one 15-ampere-rated; two 15-ampere-rated d. one 20-ampere-rated; two 20-ampere-rated

b. one 20-ampere-rated; one 20-ampere-rated Secs. E3703.3, E3703.4

When sizing feeder conductors, a minimum unit load of ______ shall constitute the minimum lighting and convenience receptacle load for each square foot of floor area. a. two volt-amperes b. three volt-amperes c. five volt-amperes d. six volt-amperes

b. three volt-amperes Sec. E3704.4

Where an electrical branch circuit has multiple outlets, what is the minimum required size of circuit conductors for a circuit rated at 30 amps? a. 14 AWG b. 12 AWG c. 10 AWG d. 8 AWG

c. 10 AWG Table E3702.14

Overhead service conductors shall have a minimum clearance of _____ over residential property and driveways. a. 8 feet b. 10 feet c. 12 feet d. 15 feet

c. 12 feet Sec. 3604.2.2, #2

Service-entrance cables shall be supported by straps or other approved means within ______ inches of every electrical service head and at maximum intervals of ______ inches. a. 8; 30 b. 8; 36 c. 12; 30 d. 12; 36

c. 12; 30 Sec. E3605.7

Where used outside, an aluminum or copper-clad aluminum grounding electrode conductor shall be installed a minimum of ______ from the earth. a. 6 inches b. 12 inches c. 18 inches d. 30 inches

c. 18 inches Sec. E3610.2

Where it is impractical to locate the service head or gooseneck above the point of attachment of the service-drop or overhead service conductors to the building, the service head or gooseneck shall be located a maximum of ______ inches from the point of attachment. a. 12 b. 18 c. 24 d. 36

c. 24 Sec. E3605.9.3, Exception

In no case shall the point of attachment for service-drop conductors be less than ______ feet above finished grade.

10 Sec. E3604.3

Over residential property and driveways, service-drop conductors shall have ______ feet minimum clearance above final grade.

12 Sec. E3604.2.2, #2

Electrical services within the scope of the IRC are limited to ______-volt, 0- to ______-ampere, single-phase systems.

120/240; 400 Sec. E3401.2

Where a branch circuit or a feeder supplies a continuous load, it shall have an ampacity of ______ percent of the continuous load.

125 Sec. E3701.2

Electrical conductors located above a roof shall be installed with a minimum vertical clearance of ______ feet where the roof has a slope 8:12. a. 3 b. 4 c. 6 d. 7

a. 3 Sec. E3604.2.1, Exception 2

An open service conductor without an overall outer jacket shall have a minimum clearance of ______ from the sides of doors, porches and openable windows. a. 3 feet b. 4 feet c. 6 feet d. 8 feet

a. 3 feet Sec. E3604.1

Work space in front of an electrical panelboard shall be a minimum of ______ in width, but no less than the width of the panelboard. a. 30 inches b. 36 inches c. 42 inches d. 48 inches

a. 30 inches Sec. E3405.2

Energized parts operation at a minimum of ______ shall be guarded against accidental contact by people through the use of approved enclosures. a. 50 volts b. 60 volts c. 90 volts d. 110 volts

a. 50 volts Sec. E3404.9

The rating of any one cord-and-plug-connected utilization equipment not fastened in place shall be a maximum of ______ of the branch-circuit ampere rating. a. 80 percent b. 100 percent c. 110 percent d. 125 percent

a. 80 percent Sec. E3702.3

Electrical panelboards and overcurrent protection devices shall not be located in ______. a. clothes closets b. sleeping rooms c. garages d. storage rooms

a. clothes closets Sec. E3405.5

Equipment grounding conductors of size 6 AWG and smaller may be identified by all but which one of the following methods? a. continuous white color b. continuous green color c. bare d. continuous green color with one or more yellow stripes

a. continuous white color Sec. E3407.2

All mechanical elements used to terminate a grounding electrode conductor or bonding jumper to the grounding electrodes shall be ______.

accessible Sec. E3611.2

Where metallic plugs or plates are used with nonmetallic electrical enclosures to close unused openings, they shall be recessed a minimum of ______ inch from the outer surface of the enclosure. a. 1/8 b. 1/4 c. 3/8 d. 1/2

b. 1/4 Sec. E3404.6

In all cases, the point of attachment of service-drop conductors to a building shall be a minimum of ______ above finished grade. a. 8 feet b. 10 feet c. 12 feet d. 14 feet

b. 10 feet Sec. E3604.3

A metal underground water pipe used as part of the grounding electrode system shall be in direct contact with the earth for a minimum of ______. a. 8 feet b. 10 feet c. 15 feet d. 20 feet

b. 10 feet Sec. E3608.1.1

What is the maximum overcurrent-protection-device rating permitted for No. 12 copper conductors? a. 15 amps b. 20 amps c. 25 amps d. 30 amps

b. 20 amps Table E370.5.5.3

Where the openings to an outlet, junction, or switch point is less that 8 inches in any dimension, each electrical conductors shall be long enough to extend a minimum of ______ inches outside of such opening. a. 2 b. 3 c. 4 d. 6

b. 3 Sec. E3406.11.3

An electrical panelboard requiring access while energized shall be provided with a minimum of ______ in depth measured in the direction of access. a. 30 inches b. 36 inches c. 42 inches d. 48 inches

b. 36 inches Sec. E3405.2

In order to be used as part of the grounding electrode system, interior metal water pipe shall be located a maximum of _____ feet from the entrance to the building. a. 3 b. 5 c. 6 d. 10

b. 5 Sec. E3608.1.1.1