Deck 9: Special Systems

Question 1

In a communications system, the inside conduit drops ____.

A)are always grounded
B)need not be grounded unless they can become energized
C)are grounded at every second drop
D)are inherently at ground

Answer 1

B

Question 2

The covers for multioutlet assemblies are available in steel, ____, and PVC with vinyl laminates of different colors and wood veneers such as maple, cherry, mahogany, and oak.

A)ceramic
B)marble
C)copper
D)aluminum

Answer 2

D

Question 3

Two methods can be used to provide floor outlets: (1)installing ____ raceway or (2)installing floor boxes.

A)flush-with-floor
B)surface
C)wall
D)underfloor

Answer 3

D

Question 4

____ for multioutlet assemblies are available with GFCI, isolated ground, and surge suppression features.

A)Cables
B)Receptacles
C)Conduits
D)Conductors

Question 5

Conductors to be installed in raceways may be spliced at ____ or within the raceway if the cover of the raceway is removable.

A)junction boxes
B)panelboards
C)conduits
D)modular partitions

Question 6

The combined size of the conductors, splices, and taps shall not fill more than ____ percent of the raceway at the point where the splices and taps occur.

A)50
B)65
C)75
D)90

Question 7

What components are typically included in an exploded-view drawing of a floor box with leveling screws?

Question 8

In the first phase of the installation of a telephone system in a commercial building, the ____ will install an empty conduit system according to specifications for the commercial building and in the locations indicated on the working drawings.

A)telephone company
B)electrical contractor
C)city government
D)leasing agent

Question 9

When connecting receptacles in a multioutlet assembly, the ____ must be continuous so that the removal of a device will not interrupt continuity.

A)grounded circuit conductor
B)hot conductor
C)junction box
D)receptacles

Question 10

____ are similar to surface raceways and are designed to hold both conductors and devices.

A)Conduits
B)Modular partitions
C)Multioutlet assemblies
D)Junction boxes

Question 11

Floor boxes, either metallic or nonmetallic, can be wired using ____.

A)electrical nonmetallic tubing
B)rigid nonmetallic conduit
C)any suitable raceway
D)rigid conduit

Question 12

An allowance of ____ volt-amperes is made for the installation of telephone equipment to provide the power required to operate the special switching equipment for the telephones used by tenants in a commercial building.

A)600
B)800
C)1000
D)2000

Question 13

Because of small openings and limited space, ____ are used in communications systems rather than the standard conduit fittings.

A)bushings
B)tees
C)junction boxes
D)ells

Question 14

In a dual-duct system, the junction box is constructed so that the power and communications systems are ____.

A)always separated from each other
B)ungrounded
C)interconnected
D)reversible

Question 15

Give a brief overview of communications systems requirements and wiring.

Question 16

What is the load allowance for a fixed multioutlet assembly?

Question 17

Some floor boxes must be installed to the correct height by adjusting the ____ before the concrete is poured.

A)leveling screws
B)brass cover
C)box body
D)inner ring

Question 18

When are surface raceways installed?

Question 19

Even though multipair conductors are no longer used extensively in telephone installations, the size of the conduit should be trade size ____ or larger.

A)3/8
B)3/4
C)1
D)3

Question 20

​Discuss the locations of various components of a power-limited fire alarm system in a commercial building.