RCDD TEST QUESTIONS (TOPIC 8 - TOPIC 14) WITH VERIFIED ANSWERS 2024/2025

RCDD TEST QUESTIONS (TOPIC 8 - TOPIC 14) WITH VERIFIED ANSWERS 2024/2025 Firestop ________, in conjunction with steel wedging plates, go in a steel cable tray. A. Bag B. Block C. Intumescent sheet D. Silicone foams - answerA. 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 - answerB. 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 - answerB. Fire proof Most types of firestop putty have ________ properties. A. Water based B. Cementitious C. Intumescent D. Silicone based - answerC. 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 - answerC. 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 - answerC. Firestop pillow system Cementitious materials are ________ based materials. A. Dry powder B. Latex C. Solvent D. Sand - answerA. 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 - answerD. 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 - answerA. 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 - answerD. 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 - answerB. L rating The F rating for a framed wall/stud wall is ________ hour(s). A. One B. Two C. Three D. Four - answerB. Two A(n) ________ system is considered a mechanical firestop. A. Cementitious - B. Cable transit - C. Firestop block - D. Intumescent sheet - - answerB. 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 - answerB. 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 - answerD. 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