Deck 4: Branch Circuits

Question 1

What type of branch circuit has two or more ungrounded conductors that have a voltage between them, and a grounded conductor that is connected to the neutral or grounded conductor of the system, with equal voltage between it and each ungrounded conductor of the circuit?

A)appliance
B)general-purpose
C)individual
D)multiware

Answer 1

D

Question 2

A(n)____ can be used to control lighting loads so they operate only when a room is occupied.

A)occupancy sensor
B)load adjuster
C)load sensor
D)load leveler

Answer 2

A

Question 3

What type of branch circuit is meant by a shared-neutral branch circuit?

A)appliance
B)general-purpose
C)individuals
D)multiware

Answer 3

D

Question 4

What is the purpose of a branch circuit worksheet?

Question 5

The purpose of a(n)____ device is to protect the circuit wiring and devices and to some extent the equipment served by the circuit.

A)branch circuit
B)multioutlet
C)overcurrent protection
D)overvoltage protection

Question 6

A continuous load is one that is expected to operate for a period of ____ hours or more.

A)three
B)five
C)twelve
D)twenty

Question 7

If the load is a water heater with capacity of 120 gallons (450 L)or less, the branch circuit is required to be included as a(n)____ load.

A)continuous
B)noncontinuous
C)intermittent
D)extra

Question 8

What type of load is considered a type M load?

A)air conditioning
B)fixed electric space heating
C)receptacle
D)motor

Question 9

​What is meant by a load modifier?

Question 10

During the process of laying out an electrical system, when are branch circuits assigned?

Question 11

For conductors larger than 1 AWG or for overcurrent devices rated greater than 100 amperes, the default rating of terminals is ____ degrees C.

A)60
B)75
C)85
D)90

Question 12

When sizing conductors and overcurrent protection, you must take 100 percent of the noncontinuous loads plus ____ percent of the continuous loads.

A)75
B)80
C)100
D)125

Question 13

When a branch circuit supplies an air conditioning system that consists of a hermetic motor-compressor and other loads, the circuit rating must not exceed ____ percent of the hermetic motor load plus the sum of the additional loads.

A)100
B)125
C)200
D)225

Question 14

​In the panelboard worksheet used in this chapter, what does the quantity column represent?

Question 15

The receptacle outlet for servicing air conditioning equipment is required to be located on the same level as the HVAC equipment and within ____ feet of the equipment.

A)five
B)ten
C)twenty-five
D)thirty

Question 16

For motors, the OCPDs are ____.

A)reverse-time fuses
B)inverse-time fuses
C)inverse-time circuit breakers
D)reverse-time circuit breakers

Question 17

​ What are the requirements for the disconnecting means on a sign outlet?

Question 18

What type of branch circuit supplies two or more receptacles or outlets for lighting and appliances?

A)appliance
B)general-purpose
C)individual
D)multiware

Question 19

The branch circuit begins at the final ____ and ends at the device or equipment being supplied.

A)service conductor
B)overcurrent device
C)panelboard
D)receptacle

Question 20

Multioutlet branch-circuit ratings are limited to 15-, 20-, 30-, 40-, and 50-ampere except on ____ premises, where they may have a higher rating.

A)government
B)residential
C)commercial
D)industrial