Practice Quiz 1 - Nec Exam

24 Questions | By Dougpappas | Last updated: Mar 22, 2022 | Total Attempts: 1272

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This is a quiz over the Texas Residential Appliance Installers License.

Questions and Answers

1.

The NEC is_______.
- A.
  
  Intended to be a design manual
- B.
  
  Meant to be used as an instruction guide for untrained persons
- C.
  
  For the practical safeguarding of persons and property
- D.
  
  Published by the Bureau of Standards
2.

If the NEC requires new products that are not yet available at the time a new edition is adopted, the ______ may permit the use of the products that comply with the previous edition of the Code adopted by that jurisdiction.
- A.
  
  Electrical engineer
- B.
  
  Master electrician
- C.
  
  Authority having jurisdiction
- D.
  
  Permit holder
3.

The NEC requires that electrical work be _______ .
- A.
  
  Installed in a neat and workmanlike manner
- B.
  
  Installed under the supervision of a licensed person
- C.
  
  Completed before being inspected
- D.
  
  All of these
4.

Each disconnecting means shall be legibly marked to indicate its purpose unless located and arranged so _______.
- A.
  
  That it can be locked out and tagged
- B.
  
  It is not readily accessible
- C.
  
  The purpose is evident
- D.
  
  That it operates at less than 300 volts-to-ground
5.

A minimum working space depth of _____ to live parts operating at 277 volts-to-ground is required where there are exposed live parts on one side and no live or grounded parts on the other side.
- A.
  
  2 ft
- B.
  
  3 ft
- C.
  
  4 ft
- D.
  
  6 ft
6.

Concrete, brick, or tile walls are considered _____, as applied to working space requirements.
- A.
  
  Inconsequential
- B.
  
  In the way
- C.
  
  Grounded
- D.
  
  None of these
7.

The required working space for access to live parts operating at 300 volts-to-ground, where there are exposed live parts on both sides of the workspace is _____ .
- A.
  
  3 ft
- B.
  
  3 1/2 ft
- C.
  
  4 ft
- D.
  
  4 1/2 ft
8.

The minimum height of working spaces about electrical equipment, switchboards, panelboards, or motor control centers operating at 600V, nominal, or less and likely to require examination, adjustment, servicing, or maintenance while energized shall be 6 1/2 ft or the height of the equipment, whichever is greater, except for service equipment or panelboards in existing dwelling units that do not exceed 200A.
- A.
  
  True
- B.
  
  False
9.

When normally enclosed live parts are exposed for inspection or servicing, the working space, if in a passageway or general open space, shall be suitably_____ .
- A.
  
  Accessible
- B.
  
  Guarded
- C.
  
  Open
- D.
  
  Enclosed
10.

For equipment rated 1,200A or more that contains overcurrent devices, switching devices, or control devices; and where the entrance to the working space has a personnel door less than 25 ft from the working space, the door shall _____ .
- A.
  
  Open either in or out with simple pressure and shall not have any lock
- B.
  
  Open in the direction of egress and be quipped with panic hardware or other devices so the door can open under simple pressure
- C.
  
  Be equipped with a locking means
- D.
  
  Be equipped with an electronic opener
11.

Grounded conductors _____ and larger can be identified by distinctive white and gray markings at their terminations.
- A.
  
  10 AWG
- B.
  
  8 AWG
- C.
  
  6 AWG
- D.
  
  4 AWG
12.

If neutral conductors of different voltage systems are installed in the same raceway, cable, or enclosure, the means of idenification of the different neutrals shall be documented in a manner that's _____ or be permanently posted where the conductors or fiffernet systems originate.
- A.
  
  Available to the AHJ
- B.
  
  Available through the engineer
- C.
  
  Readily available
- D.
  
  Included in the as-built drawings
13.

If used for single-pole, 3-way or 4-way switch loops, the reidentified conductor with white or gray insulation or three continuous white stripes can be used for the supply to the switch, but not as a return conductor from the switch to the outlet.
- A.
  
  True
- B.
  
  False
14.

Receptacles shall have the terminal intended for connection to the grounded conductor identified by a metal or metal coating that is substantially _____ in color.
- A.
  
  Green
- B.
  
  White
- C.
  
  Gray
- D.
  
  B or c
15.

Multiwire branch circuits shall
- A.
  
  Supply only line-to-neutral loads
- B.
  
  Not be permitted in dwelling units
- C.
  
  Have their conductors originate from different panelboards
- D.
  
  None of these
16.

The NEC defines a "_____" as all circuit conductors between the service equipment, the source of a separately derived system, or other power-supply source and the final branch-circuit overcurrent device.
- A.
  
  Service
- B.
  
  Feeder
- C.
  
  Branch circuit
- D.
  
  All of these
17.

The rating of a branch circuit shall be determined by the rating of the _____ .
- A.
  
  Ampacity of the largest device connected to the circuit
- B.
  
  Average of the ampacity of all devices
- C.
  
  Branch-circuit overcurent device
- D.
  
  Ampacity of the branch-circuit conductors according to Table 310.15(B)(16)
18.

A circuit breaker is a device designed to _____ the circuit automatically on a predetermine overcurrent without damage to itself when properly applied within its rating.
- A.
  
  Energize
- B.
  
  Reset
- C.
  
  Connect
- D.
  
  Open
19.

"Bonded" can be described as _____ to establish electrical continuity and conductivity.
- A.
  
  Isolated
- B.
  
  Guarded
- C.
  
  Connected
- D.
  
  Separated
20.

If dwelling units, the voltage between conductors that supply the terminals of _____ shall not exceed 120V, nominal.
- A.
  
  Luminairs
- B.
  
  Cord-and-plug-connected loads of 1,440 VA or less
- C.
  
  Cord-and-plug-connected loads of more than 1/4 hp
- D.
  
  A and b
21.

The connection between the grounded conductor and the equipment grounding conductor at the service is accomplished by installing a(n) _____ bonding jumber.
- A.
  
  Main
- B.
  
  System
- C.
  
  Equipment
- D.
  
  Circuit
22.

In other than dwelling locations, GFCI protection is required in _____ .
- A.
  
  Indoor wet locations
- B.
  
  Locker rooms adjacent to showering facilities
- C.
  
  Garages, service bays, and similar areas
- D.
  
  All of these
23.

Each multiwire branch circuit shall be provided with a means that will simultaneously disconnect all _____ conductors at the point where the branch circuit originates.
- A.
  
  Circuit
- B.
  
  Grounded
- C.
  
  Grounding
- D.
  
  Ungrounded
24.

GFCI protection shall be provided for all 15A and 20A, 125V receptacles installed in a dwelling _____ .
- A.
  
  Attic
- B.
  
  Garage
- C.
  
  Laundry room
- D.
  
  All of these