Deck 8: Lighting Branch Circuit for the Front Bedroom

Question 1

To be effective, accent lighting should be at least ____ times that of the surrounding general lighting.

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

Answer 1

D

Question 2

What Code section provides very specific rules for the location and types of luminaires permitted to be installed in clothes closets?

Answer 2

NEC 410.16 provides rules for this issue.

Question 3

The NEC allows what maximum number of receptacle outlets to be connected on a 120-volt residential lighting or small-appliance branch circuit?

A) eight
B) ten
C) thirteen
D) unlimited

Answer 3

D

Question 4

Residential wiring plans generally show lighting and receptacle outlet locations but not circuits. The electrician should design the installation with which of the following in mind?

A) economy - minimizing the number and length of circuits
B) convenience for the homeowner or other user
C) National Electrical Code requirements
D) all of these

Question 5

Electric baseboard heaters may not be permitted to be installed ____________________ a receptacle outlet.

Question 6

How many lighting outlets are permitted on one branch circuit?

A) 10
B) 12
C) 15
D) no limit

Question 7

What is the NEC definition of a clothes closet?

Question 8

Receptacles installed on 15- and 20-ampere branch circuits must be of the ____ type.

A) duplex
B) grounding
C) ground-fault protected
D) arc-fault protected

Question 9

Explain why the required minimum clearances for fluorescent fixtures installed in closets are smaller than those for incandescent fixtures.

Question 10

Many electricians wire the lights and receptacles in a room on different circuits because this ____.

A) is required by the NEC
B) is required by building codes
C) offers the advantage that all power in a room will not go out if the overcurrent protective device trips
D) simplifies grounding

Question 11

What kind of receptacle outlet has a top portion that is "hot" at all times and a bottom portion that is controlled by the wall switch?

Question 12

A light above a workbench is an example of ____.

A) general lighting
B) accent lighting
C) task lighting
D) security lighting

Question 13

An outside weatherproof outlet is required to have ____________________ protection.

Question 14

When using nonmetallic boxes, the equipment grounding conductor in nonmetallic-sheathed cable is connected to the ____-shaped equipment grounding screw found on all switches and receptacles.

A) white square
B) orange hexagon
C) yellow rectangle
D) green hexagon

Question 15

Which switch type is rarely used in residential wiring?

A) single-pole
B) double-pole
C) three-way
D) four-way

Question 16

Which rule of thumb can be followed when planning branch circuits for dwelling units?

A) one 20-ampere lighting circuit for every 200 square feet
B) one 15-ampere lighting circuit for every 1000 square feet
C) load circuits to no more than 50% of their rating
D) load circuits to no more than 80% of their rating

Question 17

The maximum volt-ampere loading permitted on a 20-ampere branch circuit with a continuous load is ____ watts (volt-amperes).

A) 1,440
B) 1,800
C) 1,920
D) 2,400

Question 18

Calculate the volt-amperes and watts of a 120-volt, 10-ampere motor at 50 percent power factor.

Question 19

Explain why pigtails used to connect receptacles to branch-circuit wiring need not be counted when determining the correct outlet box size.

Question 20

What is wall washing?

Question 21

NEC 210.11(B) requires that load be evenly proportioned among the different circuits in a panelboard. This is normally performed at the load center panelboard by connecting branch-circuit wiring so that the connected load on the two ____________________ is as equal as possible.

Question 22

A(n) ____________________ is used only to ground the metal box and must never be used as a current-carrying conductor.