RCDD Chapter 8

1. Telecommunications personnel should not move, modify, or disconnect any grounding electrode conductor without the direct participation of a qualified electrical maintenance person.

True

False

2. The best time to design a grounding and protection scheme for a structure is during the initial planning and construction phases of a project.

True

False

3. Bonding is the connection intended to equalize safely and effectively the potential differences differences between two metallic items.

True

False

4.
What does BCT stand for?

Bonding conductor

Bonding Conductor for Telecommunications

Bonding current for Telecommunications

5. A primary responsibility of the designer is safegaurding personal, property, and equipment.

True

False

6. Certified instlallers must be used when dealing with Lightning Protection.

True

False

7. What is the recommended maximum value for the bonding resistance between EF and TR?

.1 ohms (100 milliohms)

.2 ohms (200 milliohms)

.3 ohms (300 milliohms)

8. The equipment grounding system impedance is dependent on a number of physical characteristices including what:

Tightness of equipment grounding conductor terminations

Length of the equipment grounding conductor path

Number of bends inthe equipment grounding conductor path

Radius of each bend in the equipment grounding conductor path

All the above.

9. When doing a visual inspecton you can usually reveal problems, such as?

Loose connections

Corrosion

Physical damage

System modifications

All the above

10. The results of not safeguarding personnel, property, and equipment from foreign electircl voltages and currents could be what?

Death or injury due to electric shock

Destruction of electronic equipment and property due to electrical fire

Componet malfunction or degradation

Work or process disruption

All the above

11. 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?

Grounding electrode conductor

Grounding electrode

12. 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)

True

False

13. What does BCT stand for?

Backbone conductor for telecommunications

Bonding conductor for telecommunications

Busbar for conductor telecommunications

14. 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?

Grounding electrode conductor

Grounding electrode

15. Isolated ground (IG) is an equipment grounding topology that reduces the effects of EMI and RFI on the equipment grounding system.

True

False

16. 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.

TMGB

BCT

Structural steel column

GFC

17. 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?

.2 ohms

.1 ohms

.3 ohms

.4 ohms

18. The telecommunications main grounding busbar (TMGB) must be predrilled copper busbar with holes for use with standard-sized lugs, and have minimum dimensions of?

6.3 mm (.25 in) thick by 101 mm (4 in) wide and be variable in length.

12.6 mm (.50 in ) thick by 200 mm (8 in ) wide and be variable in length.

3.3 mm (.12 in) thick by 50 mm (2 in ) wide and be variable in length

19. 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.

True

False

All the above

20. The designer must consider that the TBB for a large site may be very costly to achieve

True

False

21. When inspection bonding connections the integrity of bonding connections cannot always be easily determined because of what?

Distance

Access

Other paralled bond connections that often exist

All the above

22. The equipment grounding system impedance is dependent on a number of physical characteristics including the:

Tightness of equipment grounding conductor terminations.

Length of the equipment grounding conductor

Number of bends in the equipment grounding conductor path

Radius of each bend in the equipment grounding conductor path

Submit

23. The LPI publishes a material standard and an installation practice standard based on _______

NFPA 781

NFPA 780

NFPA 782

NFPA 783

24. The ac grounding electrode system consists of two main components what are they?

Equipment grounding system

Grounding electrode conductor

Telecommunications bonding infrastructure

Grounding electrode

Submit

25. In central office facilities, the acceptable resistance between any two points may be less than _____ milliohms, possibly _ milliohms?

200, 50

100, 50

50, 40

40, 20

26. One of the commonly overlooked grounding planes within an ER is _____________ and is often associated with raised flooring?

IG System

Insulated conductors

SRG signal reference grid

Bonding small systems

27. 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.

ER, TE

TE, TR

TR, ER

EF, ER

28. The standard for installation of lightning protection systems can be found in what documnet?

NFPA 70

NFPA 780

NFPA 640

NFPA 60

29. ________________ covers grounding and bonding requirements for telecommunications applications within commercial buildings.

ANSI/TIA/EIA-568-B.1-2

IEEE C2-2002

CSA C22.1-02

IEEE 1100

ANSI J/STD-607A

30. The designer must recongnize that tharee separate and distinct grounding systems should be in place at ever site. They are what?

Ac grounding electorde system

Dc grounding electorde system

Equipment grounding system

Telecommunications bonding infrastructure

Submit

31. If a TBB does not exceed _ a minimum of a AWG bonding conductor is sufficient for referencing all metallic surfaces within the telecommunications environment.

10 m (33 ft) 4 AWG

30.5 m (100 ft) 24 AWG

30.5 m (100 ft ) 6 AWG

95 m (295 ft) 6 AWG

32. 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.

ACEG, 100m (328 ft)

BC, 9 m (33 ft)

BCT, 9 M (33 ft)

TGB, 95 m (295 ft)

33. 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?

Lightning

Lower cost

Contact with wlectrical power circuits

Electromagnetic interference

All the above

Submit

34. It is recommended that the TMGB be located as near as possible to the what?

EF

ER

TR

TGB

MC (CD)

35. The recommended maximum dc current balue should be less than?

300 mA

500 mA

600 mA

200 mA

36. 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?

TBB

TGB

TGMB

37. Where is the GE usually located?

Top floor

Ground floor

Middle of the building

38. Any exposed cable shields are bonded directly to the TMGB as are all surge protectors.

True

False

39. What is the Max length of the BCT ?

20 ft

30 ft

40 ft

100 ft

295 ft

40. 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.

True

False

41. Buried cable collects ground strikes within a distance determined by soil resistance, what is that distance?

Typically 2 m( 6.6 ft) to 6 m (20 ft)

Typically 3 m( 10 ft) to 7m (23 ft)

Typically 4 m (13 ft) to 8 m (26 ft)

Typically 5 m (16 ft) to 9 (30 ft)

42. What does GE stand for?

Grounding electrode

Grounding enterance

Grounding equalizer

43. Typical connections are made using what?

Compression-type connections

8p8c 4 pair connector

Exothermic welding

Loose connections

Submit

44. If you exceed a run longer that 30.5m (100 ft) you should calculate for a size that conforms to the guidelines set by the who?

NFPA

NEC

ANSI

TIA

IEEE

45. A TGB is the grounding connection point for telecommunications systems and equipment in the area served by an ?

TE, TR

ER, TE

ER, MC (IC)

ER, TR

46. The TGB should be referenced to the equipment ground terminal of the furthest ac electrical panel board to equalize potentials between them.

True

False

47. IEEE Recommended Practice for powering and Grounding Electronic Equipment also known as the IEEE Emerald Book is what standard?

IEEE 1102

IEEE 1100

IEEE 1122

IEEE 1101

48. The TMGB serves as the didicated extension of the building dc grounding electrode system for the telecommunications infrastructure.

True

False

49. What british standard (BS) is the Requirements for Electrical Installation, IEE Wiring Regulations?

BS 6651

BS 7671

BS 6652

BS 7672

50. An SRG provides a high impedance path between many cabinets or racks of telecommunications equipment.

True

False

51. Commercial Building Grounding and Bonding Requirements for Telecommunications terminology is contained within?

ANSI J/STD-607-B

ANSI J/STD-621-A

ANSI J/STD-607-C

ANSI J/STD-621-B

ANSI J/STD-607A

52. Interbuilding circuits are considered to have a lightning exposure unless one or more of the following conditions exist?

Circuits in large metropolitan areas where buildings are close together and sufficiently high to intercept lightning.

Areas having an average of five or fewer thunderstorms days per year and earth resistivity of less that 100ohms-meters.

Submit

53. 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?

UL 96

UL 467

UL 497

UL 96A

54. 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.

True

False

55. What Reference and chapter deals with communications systems requirements for grounding , bonding, and protecting low-voltage communication equipment?

NEC CHAPTER 7

NEC CHAPTER 9

NFPA 780 CHAPTER 8

LPI CHAPTER 7

NEC CHAPTER 8

56. What cover electrical power circuits and low-votage control and signaling circuits.

NEC ARTICLE 250

NEC ARTICLE 320

NEC ARTICLE 251

NEC ARTICLE 253

ALL THE ABOVE

57. In new construction, an Architect must provide means of access.

True

False

58. Standard for the Installation of Lightning Protection Systems covers requirements for lightning protection systems. What is the References for this?

NFPA 781

NFPA 70

NFPA 780

RCDD Chapter 8

1. Telecommunications personnel should not move, modify, or disconnect any grounding electrode conductor without the direct participation of a qualified electrical maintenance person.

2.

What first name or nickname would you like us to use?

2. The best time to design a grounding and protection scheme for a structure is during the initial planning and construction phases of a project.

3. Bonding is the connection intended to equalize safely and effectively the potential differences differences between two metallic items.

4. What does BCT stand for?

5. A primary responsibility of the designer is safegaurding personal, property, and equipment.

6. Certified instlallers must be used when dealing with Lightning Protection.

7. What is the recommended maximum value for the bonding resistance between EF and TR?

8. The equipment grounding system impedance is dependent on a number of physical characteristices including what:

9. When doing a visual inspecton you can usually reveal problems, such as?

10. The results of not safeguarding personnel, property, and equipment from foreign electircl voltages and currents could be what?

11. 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?

12. 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)

13. What does BCT stand for?

14. 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?

15. Isolated ground (IG) is an equipment grounding topology that reduces the effects of EMI and RFI on the equipment grounding system.

16. 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.

17. 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?

18. The telecommunications main grounding busbar (TMGB) must be predrilled copper busbar with holes for use with standard-sized lugs, and have minimum dimensions of?

19. 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.

20. The designer must consider that the TBB for a large site may be very costly to achieve

21. When inspection bonding connections the integrity of bonding connections cannot always be easily determined because of what?

22. The equipment grounding system impedance is dependent on a number of physical characteristics including the:

23. The LPI publishes a material standard and an installation practice standard based on _______

24. The ac grounding electrode system consists of two main components what are they?

25. In central office facilities, the acceptable resistance between any two points may be less than _______ milliohms, possibly ___ milliohms?

26. One of the commonly overlooked grounding planes within an ER is _____________ and is often associated with raised flooring?

27. 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.

28. The standard for installation of lightning protection systems can be found in what documnet?

29. ________________ covers grounding and bonding requirements for telecommunications applications within commercial buildings.

30. The designer must recongnize that tharee separate and distinct grounding systems should be in place at ever site. They are what?

31. If a TBB does not exceed _______ a minimum of a ______ AWG bonding conductor is sufficient for referencing all metallic surfaces within the telecommunications environment.

33. 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?

34. It is recommended that the TMGB be located as near as possible to the what?

35. The recommended maximum dc current balue should be less than?

36. 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?

37. Where is the GE usually located?

38. Any exposed cable shields are bonded directly to the TMGB as are all surge protectors.

39. What is the Max length of the BCT ?

40. 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.

41. Buried cable collects ground strikes within a distance determined by soil resistance, what is that distance?

42. What does GE stand for?

43. Typical connections are made using what?

44. If you exceed a run longer that 30.5m (100 ft) you should calculate for a size that conforms to the guidelines set by the who?

45. A TGB is the grounding connection point for telecommunications systems and equipment in the area served by an ?

46. The TGB should be referenced to the equipment ground terminal of the furthest ac electrical panel board to equalize potentials between them.

47. IEEE Recommended Practice for powering and Grounding Electronic Equipment also known as the IEEE Emerald Book is what standard?

48. The TMGB serves as the didicated extension of the building dc grounding electrode system for the telecommunications infrastructure.

49. What british standard (BS) is the Requirements for Electrical Installation, IEE Wiring Regulations?

50. An SRG provides a high impedance path between many cabinets or racks of telecommunications equipment.

51. Commercial Building Grounding and Bonding Requirements for Telecommunications terminology is contained within?

52. Interbuilding circuits are considered to have a lightning exposure unless one or more of the following conditions exist?

54. 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.

55. What Reference and chapter deals with communications systems requirements for grounding , bonding, and protecting low-voltage communication equipment?

56. What cover electrical power circuits and low-votage control and signaling circuits.

57. In new construction, an Architect must provide means of access.

58. Standard for the Installation of Lightning Protection Systems covers requirements for lightning protection systems. What is the References for this?

4.
What does BCT stand for?

25. In central office facilities, the acceptable resistance between any two points may be less than _____ milliohms, possibly _ milliohms?

27. 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.

31. If a TBB does not exceed _ a minimum of a AWG bonding conductor is sufficient for referencing all metallic surfaces within the telecommunications environment.