Deck 9: Special Systems

Question 1

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 1

D

Question 2

Give a brief overview of communications systems requirements and wiring.

Answer 2

Communication/telephonic requirements vary widely according to the type of business and the extent of the communication convenience desired.Details on communication systems are given in NEC Article 800.Because it is difficult to install the system wiring after the building construction is completed, it is often a requirement that conduits be installed from each of the occupancies to a designated place or area where they are accessible to the installers of the system.The materials used in the installation and the method of installing the raceway lines are the same as those used
for light and power wiring with a few modifications.
Communication/telephonic requirements vary widely according to the type of business and the extent of the communication convenience desired.Details on communication systems are given in NEC Article 800.Because it is difficult to install the system wiring after the building construction is completed, it is often a requirement that conduits be installed from each of the occupancies to a designated place or area where they are accessible to the installers of the system.The materials used in the installation and the method of installing the raceway lines are the same as those used
for light and power wiring with a few modifications.

Question 3

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

Answer 3

B

Question 4

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 5

All receptacles on a phase can be connected in , or the receptacles can be connected on alternate phases.

A)two rows
B)three rows
C)a continuous row
D)a circular pattern

Question 6

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

Question 7

What is the load allowance for a fixed multioutlet assembly?

Question 8

What is the procedure for installing a multifunction nonmetallic floor box?

Question 9

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 10

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 11

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 12

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 13

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 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)adjacent
C)mutually accessible
D)reversible

Question 15

When are surface raceways installed?

Question 16

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

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

Question 17

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

Question 18

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

Question 19

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 20

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