RCDD Chapter 8
Test your knowledge on the Registered Communications Distribution Designer certification in our eighth chapter of quizzes that focus on the engineering-oriented credential offered by BICSI. Do you know enough to earn the certification? Let’s find out.
- 1.
The standard for installation of lightning protection systems can be found in what documnet?
- A.
NFPA 70
- B.
NFPA 780
- C.
NFPA 640
- D.
NFPA 60
Correct Answer
B. NFPA 780 -
- 2.
A primary responsibility of the designer is safegaurding personal, property, and equipment.
- A.
True
- B.
False
Correct Answer
A. True -
- 3.
The results of not safeguarding personnel, property, and equipment from foreign electircl voltages and currents could be what?
- A.
Death or injury due to electric shock
- B.
Destruction of electronic equipment and property due to electrical fire
- C.
Componet malfunction or degradation
- D.
Work or process disruption
- E.
All the above
Correct Answer
E. All the above -
- 4.
Radio frequency interference, Electromagnetic compatibility, and Ground potential rise are just three things a designer must consider when safeguarding. What are three other things the designer must consider?
- A.
Lightning
- B.
Lower cost
- C.
Contact with wlectrical power circuits
- D.
Electromagnetic interference
- E.
All the above
Correct Answer(s)
A. Lightning
C. Contact with wlectrical power circuits
D. Electromagnetic interference -
- 5.
Ture or False, The ac grounding electrode system does not provide adequate electrical protection for people and equimpnet in the event of electircal faults within the premises wireing system.
- A.
True
- B.
False
Correct Answer
A. True -
- 6.
The ac grounding electrode system consists of two main components what are they?
- A.
Equipment grounding system
- B.
Grounding electrode conductor
- C.
Telecommunications bonding infrastructure
- D.
Grounding electrode
Correct Answer(s)
B. Grounding electrode conductor
D. Grounding electrode -
- 7.
A conductor that originates at the neutral or equipment ground buses in the main services entrances panel board or separately derived system and grounding electrode is called what?
- A.
Grounding electrode conductor
- B.
Grounding electrode
Correct Answer
A. Grounding electrode conductor -
- 8.
A conducting item (e.g., a continous underground metallic water pipe, building metal frame, concrete encased electrode, bare copper conductor, rod, pipe, or plate) that is in contact with the earth is called what?
- A.
Grounding electrode conductor
- B.
Grounding electrode
Correct Answer
B. Grounding electrode -
- 9.
Telecommunications personnel should not move, modify, or disconnect any grounding electrode conductor without the direct participation of a qualified electrical maintenance person.
- A.
True
- B.
False
Correct Answer
A. True -
- 10.
The recommended maximum dc current balue should be less than?
- A.
300 mA
- B.
500 mA
- C.
600 mA
- D.
200 mA
Correct Answer
B. 500 mA -
- 11.
An earth ground tester generates a test ac current that is manufacturer specific and less susceptible to the influences of dc current. As a result, it is more accurate than the standard volt-ohm-milliammeter (VOM)
- A.
True
- B.
False
Correct Answer
A. True -
- 12.
By connecting the meter leads between the nearest available grounding electrode (e.g., structural steel column) and the busbar in the EF or TR it is recommended a maximum value for the bonding resistance between these two points is what?
- A.
.2 ohms
- B.
.1 ohms
- C.
.3 ohms
- D.
.4 ohms
Correct Answer
B. .1 ohms -
- 13.
The equipment grounding system impedance is dependent on a number of physical characteristices including what:
- A.
Tightness of equipment grounding conductor terminations
- B.
Length of the equipment grounding conductor path
- C.
Number of bends inthe equipment grounding conductor path
- D.
Radius of each bend in the equipment grounding conductor path
- E.
All the above.
Correct Answer
E. All the above. -
- 14.
Isolated ground (IG) is an equipment grounding topology that reduces the effects of EMI and RFI on the equipment grounding system.
- A.
True
- B.
False
Correct Answer
A. True -
- 15.
One of the commonly overlooked grounding planes within an ER is _____________ and is often associated with raised flooring?
- A.
IG System
- B.
Insulated conductors
- C.
SRG signal reference grid
- D.
Bonding small systems
Correct Answer
C. SRG signal reference grid -
- 16.
Commercial Building Grounding and Bonding Requirements for Telecommunications terminology is contained within?
- A.
ANSI J/STD-607-B
- B.
ANSI J/STD-621-A
- C.
ANSI J/STD-607-C
- D.
ANSI J/STD-621-B
- E.
ANSI J/STD-607A
Correct Answer
E. ANSI J/STD-607A -
- 17.
The telecommunications main grounding busbar (TMGB) must be predrilled copper busbar with holes for use with standard-sized lugs, and have minimum dimensions of?
- A.
6.3 mm (.25 in) thick by 101 mm (4 in) wide and be variable in length.
- B.
12.6 mm (.50 in ) thick by 200 mm (8 in ) wide and be variable in length.
- C.
3.3 mm (.12 in) thick by 50 mm (2 in ) wide and be variable in length
Correct Answer
A. 6.3 mm (.25 in) thick by 101 mm (4 in) wide and be variable in length. -
- 18.
What does BCT stand for?
- A.
Bonding conductor
- B.
Bonding Conductor for Telecommunications
- C.
Bonding current for Telecommunications
Correct Answer
B. Bonding Conductor for Telecommunications -
- 19.
A ________ is intended to bond the TMGB to the ac grounding electrode system via the ac main service enterance panel board. However, unless this bonding connection is made within _______, this connection should not be specified since the impedance of this conductor, due to iths length, may limit its effectiveness.
- A.
ACEG, 100m (328 ft)
- B.
BC, 9 m (33 ft)
- C.
BCT, 9 M (33 ft)
- D.
TGB, 95 m (295 ft)
Correct Answer
C. BCT, 9 M (33 ft) -
- 20.
Where building steel is available in the EF, the TMGB should be bonded to the nearest __________ provided that its bonding effectiveness has been verified via two-point bonding testing.
- A.
TMGB
- B.
BCT
- C.
Structural steel column
- D.
GFC
Correct Answer
C. Structural steel column -
- 21.
A bonding conductor can be routed between the TMGB and the nearest effectively grounded ac electrical branch circuit panel board provided a low gro9und impedance of the panel board has been verified with a ground impedance tester.
- A.
True
- B.
False
- C.
All the above
Correct Answer
A. True -
- 22.
A TGB is the grounding connection point for telecommunications systems and equipment in the area served by an ?
- A.
TE, TR
- B.
ER, TE
- C.
ER, MC (IC)
- D.
ER, TR
Correct Answer
D. ER, TR -
- 23.
The TGB should be referenced to the equipment ground terminal of the furthest ac electrical panel board to equalize potentials between them.
- A.
True
- B.
False
Correct Answer
A. True -
- 24.
A Telecommunications Bonding Backbone (TBB) is a bonding conductor intended to equalize potentials between ___ on multiple floors of a building with an ultimate connection to the ____ TMGB.
- A.
ER, TE
- B.
TE, TR
- C.
TR, ER
- D.
EF, ER
Correct Answer
C. TR, ER -
- 25.
The designer must consider that the TBB for a large site may be very costly to achieve
- A.
True
- B.
False
Correct Answer
A. True -
- 26.
As an alternative, the designer should specify that the TGB in each TR be bondied to the dc electrical panel board for that floor of the building with a supplemental bonding connection made to the frame of the building.
- A.
True
- B.
False
Correct Answer
B. False -
- 27.
Once one or both of these two connections are achieved (bonded to the ac electrical panel borad for that floor of the building with a supplemental bonding connectons made to the metal frame of the building, where applicable the need for the _____ is eliminated?
- A.
TBB
- B.
TGB
- C.
TGMB
Correct Answer
A. TBB -
- 28.
When inspection bonding connections the integrity of bonding connections cannot always be easily determined because of what?
- A.
Distance
- B.
Access
- C.
Other paralled bond connections that often exist
- D.
All the above
Correct Answer
D. All the above -
- 29.
When doing a visual inspecton you can usually reveal problems, such as?
- A.
Loose connections
- B.
Corrosion
- C.
Physical damage
- D.
System modifications
- E.
All the above
Correct Answer
E. All the above -
- 30.
Interbuilding circuits are considered to have a lightning exposure unless one or more of the following conditions exist?
- A.
Circuits in large metropolitan areas where buildings are close together and sufficiently high to intercept lightning.
- B.
Interbuilding cable runs of 42.7 m (140 ft) or less, directly buried or in underground conduits( The shield or conduit must be bonded to the building's ac rounding electrode system at each end. This is another simplified zone fo protection, as well as prober bonding practice.)
- C.
Areas having an average of five or fewer thunderstorms days per year and earth resistivity of less that 100ohms-meters.
Correct Answer(s)
A. Circuits in large metropolitan areas where buildings are close together and sufficiently high to intercept lightning.
B. Interbuilding cable runs of 42.7 m (140 ft) or less, directly buried or in underground conduits( The shield or conduit must be bonded to the building's ac rounding electrode system at each end. This is another simplified zone fo protection, as well as prober bonding practice.)
C. Areas having an average of five or fewer thunderstorms days per year and earth resistivity of less that 100ohms-meters. -
- 31.
Buried cable collects ground strikes within a distance determined by soil resistance, what is that distance?
- A.
Typically 2 m( 6.6 ft) to 6 m (20 ft)
- B.
Typically 3 m( 10 ft) to 7m (23 ft)
- C.
Typically 4 m (13 ft) to 8 m (26 ft)
- D.
Typically 5 m (16 ft) to 9 (30 ft)
Correct Answer
A. Typically 2 m( 6.6 ft) to 6 m (20 ft) -
- 32.
What british standard (BS) is the Requirements for Electrical Installation, IEE Wiring Regulations?
- A.
BS 6651
- B.
BS 7671
- C.
BS 6652
- D.
BS 7672
Correct Answer
B. BS 7671 -
- 33.
________________ covers grounding and bonding requirements for telecommunications applications within commercial buildings.
- A.
ANSI/TIA/EIA-568-B.1-2
- B.
IEEE C2-2002
- C.
CSA C22.1-02
- D.
IEEE 1100
- E.
ANSI J/STD-607A
Correct Answer
E. ANSI J/STD-607A -
- 34.
IEEE Recommended Practice for powering and Grounding Electronic Equipment also known as the IEEE Emerald Book is what standard?
- A.
IEEE 1102
- B.
IEEE 1100
- C.
IEEE 1122
- D.
IEEE 1101
Correct Answer
B. IEEE 1100 -
- 35.
The LPI publishes a material standard and an installation practice standard based on _______
- A.
NFPA 781
- B.
NFPA 780
- C.
NFPA 782
- D.
NFPA 783
Correct Answer
B. NFPA 780 -
- 36.
Certified instlallers must be used when dealing with Lightning Protection.
- A.
True
- B.
False
Correct Answer
A. True -
- 37.
What Reference and chapter deals with communications systems requirements for grounding , bonding, and protecting low-voltage communication equipment?
- A.
NEC CHAPTER 7
- B.
NEC CHAPTER 9
- C.
NFPA 780 CHAPTER 8
- D.
LPI CHAPTER 7
- E.
NEC CHAPTER 8
Correct Answer
E. NEC CHAPTER 8 -
- 38.
What cover electrical power circuits and low-votage control and signaling circuits.
- A.
NEC ARTICLE 250
- B.
NEC ARTICLE 320
- C.
NEC ARTICLE 251
- D.
NEC ARTICLE 253
- E.
ALL THE ABOVE
Correct Answer
A. NEC ARTICLE 250 -
- 39.
Standard for the Installation of Lightning Protection Systems covers requirements for lightning protection systems. What is the References for this?
- A.
NFPA 781
- B.
NFPA 70
- C.
NFPA 780
- D.
NFPA 780
Correct Answer
D. NFPA 780 -
- 40.
For the United States, there are many Underwriters Laboratories Inc. (UL) safety standards that speecify manufactured product test for safety under various condituons (e.g., electrical exposure, capacity, physical handling and installation, and moisture). In what UL would i find the safety standards for Grounding and Bonding Equipment?
- A.
UL 96
- B.
UL 467
- C.
UL 497
- D.
UL 96A
Correct Answer
B. UL 467 -
- 41.
The best time to design a grounding and protection scheme for a structure is during the initial planning and construction phases of a project.
- A.
True
- B.
False
Correct Answer
A. True -
- 42.
Bonding is the connection intended to equalize safely and effectively the potential differences differences between two metallic items.
- A.
True
- B.
False
Correct Answer
A. True -
- 43.
The designer must recongnize that tharee separate and distinct grounding systems should be in place at ever site. They are what?
- A.
Ac grounding electorde system
- B.
Dc grounding electorde system
- C.
Equipment grounding system
- D.
Telecommunications bonding infrastructure
Correct Answer(s)
A. Ac grounding electorde system
C. Equipment grounding system
D. Telecommunications bonding infrastructure -
- 44.
In new construction, an Architect must provide means of access.
- A.
True
- B.
False
Correct Answer
B. False -
- 45.
In central office facilities, the acceptable resistance between any two points may be less than _______ milliohms, possibly ___ milliohms?
- A.
200, 50
- B.
100, 50
- C.
50, 40
- D.
40, 20
Correct Answer
B. 100, 50 -
- 46.
The equipment grounding system impedance is dependent on a number of physical characteristics including the:
- A.
Tightness of equipment grounding conductor terminations.
- B.
Length of the equipment grounding conductor
- C.
Number of bends in the equipment grounding conductor path
- D.
Radius of each bend in the equipment grounding conductor path
Correct Answer(s)
A. Tightness of equipment grounding conductor terminations.
B. Length of the equipment grounding conductor
C. Number of bends in the equipment grounding conductor path
D. Radius of each bend in the equipment grounding conductor path -
- 47.
An SRG provides a high impedance path between many cabinets or racks of telecommunications equipment.
- A.
True
- B.
False
Correct Answer
B. False -
- 48.
Any exposed cable shields are bonded directly to the TMGB as are all surge protectors.
- A.
True
- B.
False
Correct Answer
A. True -
- 49.
What does GE stand for?
- A.
Grounding electrode
- B.
Grounding enterance
- C.
Grounding equalizer
Correct Answer
C. Grounding equalizer -
- 50.
Where is the GE usually located?
- A.
Top floor
- B.
Ground floor
- C.
Middle of the building
Correct Answer
A. Top floor -
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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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Mar 14, 2022Quiz Edited by
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Feb 27, 2009Quiz Created by
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