Question 1

List all of the locations of a house where AFCI protection for the branch circuits supplying those locations is required.

Accepted Answer

Section 210.12(A) requires all 120-volt, 15- and 20-ampere branch circuits supplying outlets or devices in dwelling unit kitchens, family rooms, dining rooms, living rooms, parlors, libraries, dens, bedrooms, sunrooms, recreation rooms, closets, hallways, laundry areas, and similar rooms or areas to be arc-fault circuit-interrupter (AFCI) protected.

Question 2

A wall-mounted electric oven has a nameplate rating of 9 kilowatts at 240 volts.The rated current is ____________________ amperes.

Accepted Answer

37.5
37 1/2
37-1/2

Question 3

In older smoke detectors, the interconnect wire was colored yellow, but newer smoke detectors are using a red interconnect wire.

Accepted Answer

A) True 
 B)False  True

Question 4

If a counter-mounted cooktop unit has a nameplate rating of 7300 watts at 240 volts, the current draw will be __________ amperes.
a.
30.41
b.
41.65
c.
60.83
d.
72.6

Accepted Answer

A
7300 wat

Question 5

When determining the amount of electric heating to be installed in a house, the rule of thumb is to use _______ watts per square foot for each heated area in a house.

Accepted Answer

A)  10 
B)  100 
C)  1 
D)  50 
A)  10 
B)  100 
C)  1 
D)  50

Question 6

Explain what a carbon monoxide detector does.

Accepted Answer

A carbon monoxide detector is a device t

Question 7

The NEC requires most motor applications to be protected by overload devices sized not more than __________ of the motor's nameplate current rating.

Accepted Answer

A)  100% 
B)  115% 
C)  125% 
D)  150% 
A)  100% 
B)  115% 
C)  125% 
D)  150%

Question 8

The working space requirements of Section 110.26 in the NEC must be maintained when the disconnecting means for an air-conditioning unit on the outside of the house is installed.

Accepted Answer

A) True 
 B)False

Question 9

When an installation technique is used that brings the circuit conductors directly to an electrical appliance and then terminates them at the appliance, the appliance is said to be ____________________.

Accepted Answer

The answer of When an installation technique is used that...

Question 10

Which NEC Table will tell you the full load current for a single-phase electric motor?

Accepted Answer

A)  Table 310.15(
B) (16) 
B)  Table 430.248 
C)  Table 8, Chapter 9 
D)  Table 430.250 
A)  Table 310.15(
B) (16) 
B)  Table 430.248 
C)  Table 8, Chapter 9 
D)  Table 430.250

Question 11

Explain how smoke detectors work.

Accepted Answer

Most smoke detectors work eith

Question 12

If a new electric clothes dryer is being installed in a home built before 1996 that has a three-wire cord-and-plug connection, the circuit must be replaced to accept a four-wire cord and plug.

Accepted Answer

A) True 
 B)False

Question 13

A ____________________-ampere overcurrent protection device is required for a residential general-purpose branch circuit wired with a 12 AWG copper conductor.

Accepted Answer

The answer of A ____________________-ampere overcurrent protection device is required...

Question 14

A(n) __________ circuit breaker has a trip time that gets faster as the fault current flowing through it gets larger.

Accepted Answer

A)  dual-element 
B)  inverse time 
C)  plug fuse 
D)  type S 
A)  dual-element 
B)  inverse time 
C)  plug fuse 
D)  type S

Question 15

The minimum number of small appliance circuits required by the NEC in each house is __________.

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 16

In the NEC, a bathroom is defined as an area that has a basin, a toilet, and a __________.

Accepted Answer

A)  urinal 
B)  tub 
C)  shower 
D)  Any of the above 
A)  urinal 
B)  tub 
C)  shower 
D)  Any of the above

Question 17

Smoke detectors in homes must be hardwired to the electrical system but may have battery backup.

Accepted Answer

A) True 
 B)False

Question 18

A(n) _________________________________ is a fuse type that has a time-delay feature built into it and is often used as an overcurrent protection device for electric motor circuits.

Accepted Answer

dual-eleme

Question 19

Most residential electric water heaters operate on 240 volts, are wired with 10 AWG conductors, and are protected with a __________-ampere overcurrent protection device.

Accepted Answer

A)  20 
B)  30 
C)  40 
D)  50 
A)  20 
B)  30 
C)  40 
D)  50

Question 20

A hot water heating system is sometimes referred to as a(n) __________ heating system.

Accepted Answer

A)  forced air 
B)  gas 
C)  electric 
D)  hydronic 
A)  forced air 
B)  gas 
C)  electric 
D)  hydronic

Exam 14: Branch-Circuit Installation

List all of the locations of a house where AFCI protection for the branch circuits supplying those locations is required.

A wall-mounted electric oven has a nameplate rating of 9 kilowatts at 240 volts.The rated current is ____________________ amperes.

In older smoke detectors, the interconnect wire was colored yellow, but newer smoke detectors are using a red interconnect wire.

If a counter-mounted cooktop unit has a nameplate rating of 7300 watts at 240 volts, the current draw will be __________ amperes. a. 30.41 b. 41.65 c. 60.83 d. 72.6

When determining the amount of electric heating to be installed in a house, the rule of thumb is to use _______ watts per square foot for each heated area in a house.

Explain what a carbon monoxide detector does.

The NEC requires most motor applications to be protected by overload devices sized not more than __________ of the motor's nameplate current rating.

The working space requirements of Section 110.26 in the NEC must be maintained when the disconnecting means for an air-conditioning unit on the outside of the house is installed.

When an installation technique is used that brings the circuit conductors directly to an electrical appliance and then terminates them at the appliance, the appliance is said to be ____________________.

Which NEC Table will tell you the full load current for a single-phase electric motor?

Explain how smoke detectors work.

If a new electric clothes dryer is being installed in a home built before 1996 that has a three-wire cord-and-plug connection, the circuit must be replaced to accept a four-wire cord and plug.

A ____________________-ampere overcurrent protection device is required for a residential general-purpose branch circuit wired with a 12 AWG copper conductor.

A(n) __________ circuit breaker has a trip time that gets faster as the fault current flowing through it gets larger.

The minimum number of small appliance circuits required by the NEC in each house is __________.

In the NEC, a bathroom is defined as an area that has a basin, a toilet, and a __________.

Smoke detectors in homes must be hardwired to the electrical system but may have battery backup.

A(n) _________________________________ is a fuse type that has a time-delay feature built into it and is often used as an overcurrent protection device for electric motor circuits.

Most residential electric water heaters operate on 240 volts, are wired with 10 AWG conductors, and are protected with a __________-ampere overcurrent protection device.

A hot water heating system is sometimes referred to as a(n) __________ heating system.

Residential Workplace Safety

Hardware and Materials Used in Residential Wiring

Tools Used in Residential Wiring

Test and Measurement Instruments Used in Residential Wiring

Understanding Residential Building Plans

Determining Branch Circuit, Feeder Circuit, and Service Entrance Requirements

Introduction to Residential Service Entrances

Service Entrance Equipment and Installation

General Nec Requirements for Rough-In Wiring

Electrical Box Installation

Cable Installation

Raceway Installation

Switching Circuit Installation

Special Residential Wiring Situations

Video, Voice, and Data Wiring Installation

Lighting Fixture Installation

Device Installation

Service Panel Trim-Out

Checking Out and Troubleshooting Electrical Wiring Systems

Green Wiring Practices

Photovoltaic Pv System Installation

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