Chapter 1

Question 1

In judging equipment, considerations such as the following shall be evaluated;

Answer 1

Ejdbdvd

Question 2

Conductors normally used to carry current shall be of ____ unless otherwise provided.

Answer 2

Copper or aluminum

Article 110.5

Question 3

Where the conductor material is not specified, the sizes given in this code shall apply to ____ conductors.

Answer 3

Copper

Article 110.5

Question 4

Conductor sizes are expressed in ____ or ____.

Answer 4

American Wire Gage (AWG) or circular mils

Article 110.6

Question 5

Only wiring methods recognized as ____ are included in the Code.

Answer 5

Suitable

Article 110.8

Question 6

Electrical equipment shall be installed in ____ manner.

Answer 6

a neat and workmanlike

Article 110.12

Question 7

Unused openings shall be ____ to afford protection substantially equivalent to the wall of the equipment.

Answer 7

closed

Article 110.12 (A)

Question 8

Internal parts of electrical equipment including busbars, wiring terminals, insulators, and other surfaces shall not be ____.

Answer 8

damaged or contaminated by paint, plaster, cleaners, abrasives, or corrosive residues

Article 110.12 (B)

Question 9

Devices such as pressure terminals or pressure splicing connectors and soldering lugs shall be identified for ____.

Answer 9

the material of the conductor

Article 110.14

Question 10

Electrical equipment such as switchboards, switchgear, panelboards, industrial control panels, meter socket enclosures, and motor control centers are required to warn of arc flash hazards except for where?

Answer 10

In dwelling units

Article 110.16

Question 11

A permanent arc flash hazard label must contain what?

Answer 11

1. Nominal system voltage
2. Available fault current at the service overcurrent protective devices
3. The clearing time of service overcurrent protective devices.
4. The date the label was applied.

Question 12

Circuits for lighting and power shall not be connected to any system that contains trolley wires with ____.

Answer 12

a ground return

Article 110.19

Question 13

Unused current transformers associated with potentially energized circuits shall be ____.

Answer 13

short circuited

Article 110.23

Question 14

What is the required depth of working space for a 277/480v switchgear that routinely receives maintenance on both front and back ends where live parts are exposed?

Answer 14

4’

Table 110.26 (A) (1)

Question 15

What is the required depth of working space for a 120/208v wall mounted panelboard where all connections and renewable/adjustable parts are accessible from the front?

Answer 15

30”

Article 110.26 (A) (1) (a)

Question 16

Smaller working spaces shall be permitted where all exposed live parts operate at no greater than ____, ____, or ____.

Answer 16

30v rms, 42v peak, or 60v DC

Article 110.26 (A) (1) (b)

Question 17

The width of the working space in front of electrical equipment shall be ____ or ____, whichever is greater.

Answer 17

the width of the equipment or 30”

Article 110.26 (A) (2)

Question 18

The height of the working space in front of electrical equipment shall be ____ or ____, whichever is greater.

Answer 18

the height of the equipment or 6 1/2’

Article 110.26 (A) (3)

Question 19

Where equipment is installed above a lay in ceiling, there shall be an accessible opening no smaller than ____. In a crawl space the accessible opening shall be no smaller than ____.

Answer 19

22” x 22” 22” x 30”

Article 110.26 (A) (4) (a)

Question 20

For equipment rated 1200A or more and over 6’ wide, there shall be an entrance to and egress from the working space not less then 24” wide and 6 1/2’ tall at ____.

Answer 20

at each end of the working space

Article 110.26 (C) (2)

Question 21

Personnel doors located less than ____ from the nearest edge an 800A rated equipments work space shall open in the direction of ____.

Answer 21

25’ egress

Article 110.26 (C) (3)

Question 22

A space dedicated to the electrical installation of equipment shall be provided equal to ____.

Answer 22

The width and depth of the equipment, and extending 6’ above the equipment

Article 110.26 (E) (1) (a)

Question 23

To guard against accidental contact of live parts, equipment may be elevated above the floor or other working surface at a minimum of; ____ for 50v to 300v between ungrounded conductors, ____ for 301v to 600v between ungrounded conductors, and ____ for 601v to 1000v between ungrounded conductors.

Answer 23

8’ 8’ 6” 8’ 7”

Article 110.27 (A) (4)

Question 24

Use table 110.28 to select ____ for use in specific locations other than hazardous (classified) locations.

Answer 24

enclosures

Table 110.28

Question 25

Table 110.31 gives you minimun distances between a ____ for outdoor electrical installations over 1000v nominal.

Answer 25

fence and live parts

Table 110.31

Question 26

Electrical controls for the ventilation system of a tunnel that is 1000v nominal shall be arranged so that ____

Answer 26

the airflow can be reversed

Article 110.57

Question 27

A manhole cover for a 1000v nominal electrical system that weighs over ____ shall be considered locked as required by 110.34 (C).

Answer 27

100 lbs

Article 110.73

Question 28

In a manhole, a clear work space not less than ____ shall be provided where cables are located on both sides.

Answer 28

3’

Article 110.72

Question 29

A round manhole cover shall not be less than ____ in diameter.

Answer 29

26”

Article 110.75 (A)