Grounding and Bonding Flashcards
7 cards from real DCI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Grounding and Bonding flashcards as text
What is the fundamental difference between grounding and bonding in a telecommunications system?
Answer: Grounding establishes a connection to earth; bonding connects metallic components together
Grounding establishes an intentional connection to earth (reference potential), while bonding electrically connects metallic components together to equalize their potential.
How should telecommunications grounding conductors be routed to maximize their effectiveness?
Answer: As short and straight as possible with minimal bends and runs
Grounding conductors must be as short and straight as possible to minimize inductance and impedance, which is critical for conducting high-frequency transient events to ground.
What material is the Telecommunications Grounding Busbar (TGB) required to be made of according to ANSI/TIA-607?
Answer: Copper
TGBs must be made of copper due to its superior electrical conductivity, corrosion resistance, and compatibility with copper bonding conductors.
What tool is specifically designed to accurately measure the resistance of a grounding electrode system?
Answer: Earth ground resistance tester using fall-of-potential method
An earth ground resistance tester using the fall-of-potential (three-point) method is the correct instrument for accurately measuring grounding electrode system resistance.
What labeling requirements does ANSI/TIA-607 recommend for telecommunications grounding conductors and busbars?
Answer: Labels must identify the component as a grounding conductor and indicate connected equipment
ANSI/TIA-607 recommends that grounding conductors and busbars be labeled to identify their grounding function and indicate the connected equipment to support system maintenance.
When bonding a cable tray to the telecommunications grounding system, what is the correct connection approach?
Answer: Bond at each end of the cable tray run and at each junction
Metallic cable trays must be bonded at each end of the run and at each junction to ensure electrical continuity throughout the pathway system.
What does ANSI/TIA-607 specify regarding the routing of the Telecommunications Bonding Backbone (TBB) in relation to the building's structural steel?
Answer: The TBB may be bonded to accessible structural steel to provide additional ground paths
ANSI/TIA-607 permits the TBB to be bonded to accessible building structural steel, which can provide additional parallel ground paths and improve system performance.