RCDD TEST QUESTIONS (TOPIC 8 - TOPIC 14) ANSWERED CORRECTLY!!

RCDD TEST QUESTIONS (TOPIC 8 - TOPIC 14) ANSWERED CORRECTLY!! Firestop ________, in conjunction with steel wedging plates, go in a steel cable tray. A. Bag B. Block C. Intumescent sheet D. Silicone foams A. Bag Which of the following is a nonmechanical firestop system? A. Cable transit system B. Firestop blocks C. Fire rated pathway device D. Factory fabricated sleeve system B. Firestop blocks What type of material does NOT support combustion even under accelerated conditions? A. Fire break B. Fire proof C. Fire resistant D. Fire retardant B. Fire proof Most types of firestop putty have ________ properties. A. Water based B. Cementitious C. Intumescent D. Silicone based C. Intumescent A ________ eliminates the need to remove or install materials. A. Cast-in-place device B. Cable transit system C. Fire-rated pathway device D. Factory fabricated sleeve system C. Fire-rated pathway device You are designing the cabling infrastructure for a lab office building that will frequently change tenants. The owner will be responsible for all of the infrastructure that feeds each floor to include the telecommunication rooms. Which firestop method will best suit the owners needs? A. Cable transit system B. Factory fabricated sleeve system C. Firestop pillow system D. Silicone foam system C. Firestop pillow system Cementitious materials are ________ based materials. A. Dry powder B. Latex C. Solvent D. Sand A. Dry powder A fire ________ is a contained area that is completely enclosed by fire resistant walls, floors, and ceilings. A. Rated system B. Stop system C. Wall D. Zone D. Zone You are designing a cabling system for a chemical plant. What type of device is needed to prevent the spread of fire along the cable other than the barrier penetrations? A. Fire break B. Fire shield C. Fire stop D. Fire wall A. Fire break You are designing a firestop system for a boiler room that will have conduits coming from the service provider maintenance hole into the building. Which test rating will address the firestops ability to resist breakdown from water damage? A. F rating B. L rating C. T rating D. W rating D. W rating You are designing a firestop system for a hospital with several floors that have isolation rooms. Air leakage control is important to ensure rooms are sealed and restrict the spread of disease. Which firestop test rating should you use to ensure air leakage compliance? A. F rating B. L rating C. T rating D. W rating B. L rating The F rating for a framed wall/stud wall is ________ hour(s). A. One B. Two C. Three D. Four B. Two A(n) ________ system is considered a mechanical firestop. A. Cementitious - B. Cable transit - C. Firestop block - D. Intumescent sheet - B. Cable transit - As a guide, the MAXIMUM recommended DC current value on any bonded conductor should be less than: A. 250 milliamps B. 500 milliamps C. 750 milliamps D. 1 amp E. 1.25 amps B. 500 milliamps Surge currents due to lightning and other sources MUST be ________ before they penetrate the infrastructure. A. Shorted B. Maximized C. Terminated D. Equalized D. Equalized The impedance of the equipment grounding conductor can only be accurately measured with an instrument known as a(n): A. Volt ohm meter B. Power distribution unit C. Exothermic weld connection D. Ground impedance tester E. Amp calculator D. Ground impedance tester Often associated with raised flooring, a(n) ________ may consist of copper straps taped to the concrete floor, or it may be the floor itself with the stringers that support the tiles acting as the bonding conductor across the gradient of the floor. A. Grounding electrode conductor (GEC) B. Electrical ground bar (EGB) C. Signal reference grid (SRG) D. Telecommunications bonding backbone (TBB) E. Drain wire C. Signal reference grid (SRG) You are designing a telecommunications grounding system for a telecommunications room(TR). The TMGB is located 15 m (50 ft) from the telecommunications rack. What is the MINIMUM AWG of the ground conductor required? A. Two B. Three C. Four D. Six E. Eight D. Six The MINIMUM dimensions of the telecommunications main grounding busbar is ________ and variable in length. A. 4 mm (0.16 in) x 80 mm (3.15 in) B. 6.3 mm (0.25 in) x 100 mm (4 in) C. 8 mm (0.31 in) x 110 mm (4.33 in) D. 10.5 mm (0.41 in) x 140 mm (5.51 in) E. 12.75 mm (0.50 in) x 175 mm (6.89 in) B. 6.3 mm (0.25 in) x 100 mm (4 in) Which of the following is NOT provided by the ac grounding electrode system? A. Zero volt reference for AC power B. A path for dissipating electrical current C. A path for dissipating electrostatic discharge D. Adequate electrical protection for people and equipment D. Adequate electrical protection for people and equipment The recommended MAXIMUM value for the bonding resistance between the nearest available grounding electrode and the busbar in an entrance facility (EF) is ________ ohms. A. 0.1 B. 0.5 C. 1 D. 2 E. 5 A. 0.1 Based on documentation contained within the Insulated Cable Engineers Association(ICEA) standard P32-382, Short Circuit Characteristics of Insulated Cable, a copper conductor is capable of safely carrying one ampere for ________ second(s) for every 42.25 circular mils. A. One B. Five C. Twelve D. Twenty E. Thirty B. Five Electrical power cables are usually routed above aerial cable in order to: A. Provide aesthetics, as the power cables are bigger than the aerial cables B. Be a strength member in case a tree or something heavy falls on the lines C. Negate the need for protectors D. Intercept and divert direct power strikes D. Intercept and divert direct power strikes An isolated ground receptacle may be identified by: A. Beige coloring with an orange triangle on the face B. The letters IG C. Continuous orange coloring D. Its proximity to the PDU E. Either A or C E. Either A or C Which of the following covers lightning protection systems and defines as exposed anything above ground and outside the zone of protection? A. NTSB-12 B. IEEE 1100 C. NFPA 780 D. NEC 47 E. ANSI J/STD-607-A C. NFPA 780 As a guide, the recommended maximum AC current value on any bonding conductor should be less than ________ amperes. A. 0.50 B. 1 C. 5 D. 10 E. 20 B. 1 Certain systems must exist relative to bonding and grounding at every site. Which of the following is NOT one such system? A. AC grounding electrode system (e.g., in some countries it may also be known as the earthing system) B. Telecommunications bonding infrastructure C. Lightning protection system - D. Equipment grounding system (e.g., in some countries it may also be known as the equipment bonding system) C. Lightning protection system - Which of the following electrical devices is used to convert AC to DC? A. Inverter B. Rectifier C. Transformer D. Line filter B. Rectifier You have been asked to provide a UPS that is always serving the load from its batteries and the electrical supply is used only to recharge the batteries. Which one of the following types of UPS will meet this requirement? A. Off line, standby B. Line interactive C. Online double conversion D. Rotary E. Flywheel C. Online double conversion A rapid increase in voltage with a duration of half a cycle best describes a(n): A. Swell B. Overvoltage C. Transient D. Frequency variation C. Transient An isolated ground is used to: A. Reduce transients B. Prevent interruptions C. Reduce EMI/RFI D. Reduce swells and sags C. Reduce EMI/RFI Multiples of the basic frequency of an electrical waveform are called: A. Transients B. Noise inductions C. Harmonics D. Random frequency variations C. Harmonics The formula for calculating BTUs from electrical power is: