Deck 3: Determining the Required Number of Branch Circuits Lighting Outlets Receptacle Outlets

Question 1

A continuous load shall not exceed ____ percent of the rating of the branch circuit.

A) 50
B) 80
C) 100
D) 125

Answer 1

B

Question 2

In construction of one- and two-family dwellings, the electrical circuits are usually designed by the ____.

A) electrician
B) architect
C) consulting engineer
D) project manager

Answer 2

A

Question 3

For continuous loads, the branch-circuit rating, the conductors, and the overcurrent device shall not be less than ____ percent of the rating of the equipment.

A) 75
B) 100
C) 125
D) 150

Answer 3

C

Question 4

Most public service commissions require that the voltage for residential services be held to ± ____ percent of the nominal voltage as measured at the service point.

A) three
B) five
C) eight
D) ten

Question 5

The National Electrical Code requires outdoor receptacles to be ____.

A) AFCI protected
B) GFCI protected
C) on a dedicated circuit
D) b and c

Question 6

What determines the rating of a branch circuit?

A) Branch-circuit wire size
B) Rating of the overcurrent device
C) Length of the circuit
D) Total number of receptacles

Question 7

With the exception of ____, the 20-ampere appliance circuits required by NEC are permitted to serve no other loads.

A) clock outlets
B) receptacles that are installed to plug in the cords of gas-fired ranges, ovens, or counter-mounted cooking units
C) receptacles in bathrooms
D) receptacles in a master bedroom

Question 8

How is track lighting load in residences calculated?

A) It is calculated at 150 volt-amperes per each two feet of track.
B) It is calculated at 60 watts per lighting head.
C) It is considered to be part of the general lighting load of 3 volt-amperes per square foot.
D) The method of calculation varies depending on the type of residence.

Question 9

Explain the difference between a receptacle and a receptacle outlet .

Question 10

Calculate the minimum number of 15-ampere lighting branch circuits required in a residence of 1,850 square feet.

Question 11

What are the outdoor receptacle requirements of a one-family dwelling as specified in NEC 210.52(E)(1) ?

Question 12

List the two cases where outdoor receptacles are exempt from GFCI protection.

Question 13

List two cases where receptacles may be installed below countertops.

Question 14

Which of the following is NOT included when calculating the usable area of a dwelling to compute the required lighting load?

A) living room
B) crawl space
C) unfinished basement
D) powder rooms

Question 15

The NEC defines a ____ as "the circuit conductors between the final overcurrent device protecting the circuit and the outlet(s)."

A) receptacle outlet
B) branch circuit
C) service-entrance conductor
D) feeder

Question 16

Wall receptacles in a habitable room must be placed so they are no further than ____ feet from any point along the wall.

A) 3
B) 5
C) 6
D) 12

Question 17

The general lighting load for a dwelling is based on the ____.

A) total number of rooms
B) city ordinance requirements
C) family lifestyle needs
D) square footage of the dwelling

Question 18

The minimum lighting load requirement for dwelling units is ____ volt-amperes per square ft (0.093 m³).

A) 2
B) 3
C) 5
D) 10

Question 19

Where there are _________________________ or more on an interior stairway, a wall-switch control of the stairway lighting must be provided on each floor level and any level that has an entryway.

Question 20

Explain what is meant by a nominal voltage rating.

Question 22

Receptacles in unfinished basements must be ____________________ protected.