Question 1

If each feeder is 100 amperes, the minimum conductor size is ____.

Accepted Answer

A)  4 AWG copper (or 2 AWG aluminum) 
B)  2 AWG copper (or 4 AWG aluminum) 
C)  6 AWG copper (or 3 AWG aluminum) 
D)  8 AWG copper (or4 AWG aluminum) 
A)  4 AWG copper (or 2 AWG aluminum) 
B)  2 AWG copper (or 4 AWG aluminum) 
C)  6 AWG copper (or 3 AWG aluminum) 
D)  8 AWG copper (or4 AWG aluminum) A

Question 2

The higher the resistance through a conductor, the ____.

Accepted Answer

A)  smaller the voltage drop 
B)  higher the voltage drop 
C)  the more stable the current 
D)  more neutral the offset 
A)  smaller the voltage drop 
B)  higher the voltage drop 
C)  the more stable the current 
D)  more neutral the offset B

Question 3

General receptacle installation provisions for multifamily dwellings are almost identical to those for ____.

Accepted Answer

A)  commercial properties 
B)  garage facilities 
C)  dual-family dwellings 
D)  one-family dwellings 
A)  commercial properties 
B)  garage facilities 
C)  dual-family dwellings 
D)  one-family dwellings D

Question 4

The conductors and equipment connecting the serving utility to the wiring system of the premises are called the ____.

Accepted Answer

A)  main feeders 
B)  service 
C)  central lines 
D)  primary carriers 
A)  main feeders 
B)  service 
C)  central lines 
D)  primary carriers

Question 5

The conductor voltage that is dropped is a percentage of the source voltage and can be calculated by ____.

Accepted Answer

A)  multiplying voltage drop by the source voltage 
B)  adding voltage drop to the source voltage 
C)  subtracting voltage drop from the source voltage 
D)  dividing voltage drop by the source voltage 
A)  multiplying voltage drop by the source voltage 
B)  adding voltage drop to the source voltage 
C)  subtracting voltage drop from the source voltage 
D)  dividing voltage drop by the source voltage

Question 6

On long runs, it may be necessary to ____ to compensate for voltage drop.

Accepted Answer

A)  decrease the branch circuit length 
B)  apply an approved voltage amplifier 
C)  boost supply influx 
D)  increase the branch-circuit conductor's size 
A)  decrease the branch circuit length 
B)  apply an approved voltage amplifier 
C)  boost supply influx 
D)  increase the branch-circuit conductor's size

Question 7

All 125-volt through 250-volt receptacles supplied by single-phase branch circuits rated 150 volts or less to ground serving kitchen countertops must have ____.

Accepted Answer

A)  separate circuit breakers 
B)  interior grounding 
C)  GFCI protection 
D)  exterior grounding 
A)  separate circuit breakers 
B)  interior grounding 
C)  GFCI protection 
D)  exterior grounding

Question 8

Dwelling-unit branch circuits shall supply only loads within, or associated with, ____.

Accepted Answer

A)  dwellings in that vertical line 
B)  a parallel unit 
C)  other branch circuits 
D)  that dwelling unit 
A)  dwellings in that vertical line 
B)  a parallel unit 
C)  other branch circuits 
D)  that dwelling unit

Question 9

If the load requirements of a single-phase installation are greater than the serving agency normally supplies through one service, ____ are permitted.

Accepted Answer

A)  additional agencies 
B)  multiple branches 
C)  service disconnects 
D)  multiple services 
A)  additional agencies 
B)  multiple branches 
C)  service disconnects 
D)  multiple services

Question 10

Skin effect and induction change the resistance in alternating-current (ac) circuits; therefore, resistance of a conductor is ____.

Accepted Answer

A)  slightly lower in an ac circuit 
B)  reciprocally lower in a dc circuit 
C)  slightly higher in an ac circuit 
D)  reciprocally higher in a dc circuit 
A)  slightly lower in an ac circuit 
B)  reciprocally lower in a dc circuit 
C)  slightly higher in an ac circuit 
D)  reciprocally higher in a dc circuit

Question 11

Conductors must have ____ and sufficient ampacity to carry the current for the load as calculated in accordance with Article 220.

Accepted Answer

A)  sufficient length 
B)  adequate insulation 
C)  adequate mechanical strength 
D)  definitive markings 
A)  sufficient length 
B)  adequate insulation 
C)  adequate mechanical strength 
D)  definitive markings

Question 12

Each occupant must have ready access to ____ protecting the conductors supplying that occupancy unless otherwise permitted in 240.24(B)(1) and (B)(2).

Accepted Answer

A)  primary feeders 
B)  all overcurrent devices 
C)  panel boxes 
D)  service laterals 
A)  primary feeders 
B)  all overcurrent devices 
C)  panel boxes 
D)  service laterals

Question 13

Service conductors supplying a building (or other structure) shall not ____.

Accepted Answer

A)  terminate in a panel 
B)  be enclosed in a six-gang enclosure 
C)  pass through the interior of another building 
D)  have less than two disconnects 
A)  terminate in a panel 
B)  be enclosed in a six-gang enclosure 
C)  pass through the interior of another building 
D)  have less than two disconnects

Question 14

All electric equipment must be ____ to allow ready and safe equipment operation and maintenance.

Accepted Answer

A)  externally grounded 
B)  surrounded by sufficient unobstructed space 
C)  enclosed within a metal cabinet 
D)  surrounded by at least 2 ft of ventilation space 
A)  externally grounded 
B)  surrounded by sufficient unobstructed space 
C)  enclosed within a metal cabinet 
D)  surrounded by at least 2 ft of ventilation space

Question 15

____ is the maximum number of disconnects per service.

Accepted Answer

A)  Two 
B)  Three 
C)  Six 
D)  Nine 
A)  Two 
B)  Three 
C)  Six 
D)  Nine

Question 16

A minimum of ____ wall switch-controlled lighting outlet(s) is (are) required for dwelling hallways.

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
A)  one 
B)  two 
C)  three 
D)  four

Question 17

The larger the circular mil area of a conductor, the ____.

Accepted Answer

A)  greater the resistance 
B)  more insulation that is required 
C)  more flexible the conductor 
D)  lower the resistance 
A)  greater the resistance 
B)  more insulation that is required 
C)  more flexible the conductor 
D)  lower the resistance

Question 18

A single-phase feeder (or branch circuit) conductor will have a total resistance ____ that of one conductor.

Accepted Answer

A)  half 
B)  twice 
C)  three times 
D)  four times 
A)  half 
B)  twice 
C)  three times 
D)  four times

Question 19

Kitchen receptacles not serving countertops (such as receptacles behind refrigerators) ____ unless they are installed within 6 ft (1.8 m) of the outside edge of the sink.

Accepted Answer

A)  must be on a separate branch circuit 
B)  require a dual phase leader 
C)  do not require GFCI protection 
D)  are not counted toward total load 
A)  must be on a separate branch circuit 
B)  require a dual phase leader 
C)  do not require GFCI protection 
D)  are not counted toward total load

Question 20

A multifamily dwelling is a building containing ____ dwelling units.

Accepted Answer

A)  one or more 
B)  two or more 
C)  three or more 
D)  four or more 
A)  one or more 
B)  two or more 
C)  three or more 
D)  four or more

If each feeder is 100 amperes, the minimum conductor size is ____.

The higher the resistance through a conductor, the ____.

General receptacle installation provisions for multifamily dwellings are almost identical to those for ____.

The conductors and equipment connecting the serving utility to the wiring system of the premises are called the ____.

The conductor voltage that is dropped is a percentage of the source voltage and can be calculated by ____.

On long runs, it may be necessary to ____ to compensate for voltage drop.

All 125-volt through 250-volt receptacles supplied by single-phase branch circuits rated 150 volts or less to ground serving kitchen countertops must have ____.

Dwelling-unit branch circuits shall supply only loads within, or associated with, ____.

If the load requirements of a single-phase installation are greater than the serving agency normally supplies through one service, ____ are permitted.

Skin effect and induction change the resistance in alternating-current (ac) circuits; therefore, resistance of a conductor is ____.

Conductors must have ____ and sufficient ampacity to carry the current for the load as calculated in accordance with Article 220.

Each occupant must have ready access to ____ protecting the conductors supplying that occupancy unless otherwise permitted in 240.24(B)(1) and (B)(2).

Service conductors supplying a building (or other structure) shall not ____.

All electric equipment must be ____ to allow ready and safe equipment operation and maintenance.

____ is the maximum number of disconnects per service.

A minimum of ____ wall switch-controlled lighting outlet(s) is (are) required for dwelling hallways.

The larger the circular mil area of a conductor, the ____.

A single-phase feeder (or branch circuit) conductor will have a total resistance ____ that of one conductor.

Kitchen receptacles not serving countertops (such as receptacles behind refrigerators) ____ unless they are installed within 6 ft (1.8 m) of the outside edge of the sink.

A multifamily dwelling is a building containing ____ dwelling units.

Introduction to the National Electrical Code

Definitions

Boxes and Enclosures

Cables

Raceways and Conductors

General Provisions

Specific Provisions

Load Calculations

Services and Electrical Equipment

Load Calculations

General Provisions

Nondwelling Load Calculations

Services Feeders and Equipment

Hazardous Classified Locations

Health Care

Industrial Locations

Special Occupancies

Specific Equipment

Filters

Exam 10: Comprehensive Provisions

If each feeder is 100 amperes, the minimum conductor size is ____.

The higher the resistance through a conductor, the ____.

General receptacle installation provisions for multifamily dwellings are almost identical to those for ____.

The conductors and equipment connecting the serving utility to the wiring system of the premises are called the ____.

The conductor voltage that is dropped is a percentage of the source voltage and can be calculated by ____.

On long runs, it may be necessary to ____ to compensate for voltage drop.

All 125-volt through 250-volt receptacles supplied by single-phase branch circuits rated 150 volts or less to ground serving kitchen countertops must have ____.

Dwelling-unit branch circuits shall supply only loads within, or associated with, ____.

If the load requirements of a single-phase installation are greater than the serving agency normally supplies through one service, ____ are permitted.

Skin effect and induction change the resistance in alternating-current (ac) circuits; therefore, resistance of a conductor is ____.

Conductors must have ____ and sufficient ampacity to carry the current for the load as calculated in accordance with Article 220.

Each occupant must have ready access to ____ protecting the conductors supplying that occupancy unless otherwise permitted in 240.24(B)(1) and (B)(2).

Service conductors supplying a building (or other structure) shall not ____.

All electric equipment must be ____ to allow ready and safe equipment operation and maintenance.

____ is the maximum number of disconnects per service.

A minimum of ____ wall switch-controlled lighting outlet(s) is (are) required for dwelling hallways.

The larger the circular mil area of a conductor, the ____.

A single-phase feeder (or branch circuit) conductor will have a total resistance ____ that of one conductor.

Kitchen receptacles not serving countertops (such as receptacles behind refrigerators) ____ unless they are installed within 6 ft (1.8 m) of the outside edge of the sink.

A multifamily dwelling is a building containing ____ dwelling units.

Introduction to the National Electrical Code

Definitions

Boxes and Enclosures

Cables

Raceways and Conductors

General Provisions

Specific Provisions

Load Calculations

Services and Electrical Equipment

Load Calculations

General Provisions

Nondwelling Load Calculations

Services Feeders and Equipment

Hazardous Classified Locations

Health Care

Industrial Locations

Special Occupancies

Specific Equipment

Filters