Deck 10: Working Drawings- Upper Level

Question 1

The minimum size conductor, if all terminals are rated 75 degrees Celsius or higher, is AWG as the allowable ampacity in NEC Table 310.16(B)(16) is 85 amperes.

A)4
B)8
C)16
D)32

Answer 1

A

Question 2

Three-phase circuits result in a smaller than if a 1-phase circuit were installed.

A)current
B)circuit
C)conductor
D)ampacity

Answer 2

B

Question 3

Water heaters are available for commercial occupancies in many sizes and voltages, and for both single and supply.

A)2-phase
B)3-phase
C)4-phase
D)5-phase

Answer 3

B

Question 4

NEC 422.13 requires that the branch circuit for a storage-type electric water heater with a capacity of 120 gallons (450 L) or less is considered to be a(n) load.

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

Question 5

A washer-dryer is rated for 4000 VA at 208Y/120 volts single-phase.The overcurrent protective device must be rated at least amperes.

A)20
B)25
C)40
D)45

Question 6

Surge protectors are available in units, which can be used to provide protection on any type of sensitive equipment, such as computers and printers.

A)multiple
B)dual
C)battery-operated
D)separate

Question 7

Describe basic water heater specifications, hot water usage in a beauty salon, and what role the electrical contractor plays.

Question 8

What steps should you take while tabulating materials to ensure the best possible outcome?

Question 9

Three separate neutral conductors are installed to reduce the possibility of a conductor overheating from currents.

A)resistive
B)nonlinear
C)lighting
D)conventional

Question 10

In the insurance office, a separate, insulated-grounding conductor is installed with the feeder circuit and is connected to the neutral conductor at the service.This grounding system reduces, if not eliminates, the that often is (are) present in the conventional grounding system.

A)neutral conduction
B)electrical glare
C)electromagnetic interference
D)severe electrical surges

Question 11

In the water heater installation, what is the meaning of temperature limiting?

Question 12

What steps have been taken to make the computer room of the insurance office comply with good practice?

Question 13

Why is surge protection important?

Question 14

A washer-dryer rated for 4000 VA at 208Y/120 volts single-phase must have a branch-circuit ampacity of at least ____ amperes.

A)10
B)20
C)30
D)40

Question 15

The grounding terminal of each of the receptacles in a computer room is connected to a(n) .

A)insulated equipment grounding conductor
B)panelboard
C)raceway
D)box

Question 16

In the insurance office, a special raceway is installed in the .This raceway provides for both electrical power and communications.

A)ceiling
B)two exterior walls
C)floor
D)luminaires

Question 17

When tabulating materials, take special note of long runs of raceway or cable and determine whether is a problem.This can mean an increase in conductor and/or raceway size.

A)ampacity
B)single-phase supply
C)voltage drop
D)wiring

Question 18

The feature of the receptacle provides protection from lightning and other severe electrical surges that may occur in the electrical system.

A)surge protection
B)grounding
C)air terminal
D)EMC

Question 19

According to NEC 422.31(B), having a disconnect switch in sight is required if a(n) is not readily accessible.

A)locking provision
B)ungrounded conductor
C)surge protection receptacle
D)circuit breaker

Question 20

In the insurance office, a reception area is provided with a(n) to provide a different "look" for the clients.

A)overhead lighting system
B)isolated grounding terminal
C)combination lighting system
D)overcurrent