Download PrepIQ Duval County CoJ Florida Elevator Specialty Electrical GITS Ultimate Exam and more Exams Technology in PDF only on Docsity!
Specialty Electrical GITS Ultimate Exam
Question 1. Which NEC article specifically governs wiring for elevators, dumbwaiters, and escalators? A) Article 310 B) Article 620 C) Article 430 D) Article 240 Answer: B Explanation: NEC Article 620 is dedicated to the installation, wiring, and protection of elevators, dumbwaiters, escalators, moving walks, and platform lifts. Question 2. According to ASME A17.1, what is the primary purpose of the safety chain in an elevator system? A) To supply power to the motor B) To provide a series-connected circuit that disables the motor when any safety device opens C) To control the car’s speed during normal operation D) To connect the fire service recall switch to the controller Answer: B Explanation: The safety chain is a series circuit that includes all safety devices; opening any device breaks the circuit and stops motor power. Question 3. In Duval County, what document must be submitted before any elevator modernization work can begin? A) Electrical permit only B) Notice of Commencement and a copy of the contractor’s Florida specialty-elevator license C) OSHA 10-hour certification D) Local fire department clearance Answer: B Explanation: Florida Statute Chapter 713 requires a Notice of Commencement, and Duval County also demands proof of the contractor’s specialty-elevator license before work starts.
Specialty Electrical GITS Ultimate Exam
Question 4. When selecting a feeder conductor for a 500 hp traction motor, which NEC factor is NOT considered in the sizing calculation? A) Full-load current of the motor B) Duty cycle of the elevator C) Ambient temperature correction factor D) Color of the conduit Answer: D Explanation: Conduit color is irrelevant to conductor sizing; the other three factors directly affect ampacity calculations. Question 5. Which type of raceway is prohibited for use in the hoistway according to NEC 620.32? A) EMT (Electrical Metallic Tubing) B) Rigid Metal Conduit (RMC) C) Flexible metal conduit (FMC) with a 1/2 in. diameter or larger D) Liquidtight flexible conduit (LFMC) Answer: C Explanation: FMC of 1/2 in. or larger is not permitted in hoistways because it lacks the required fire-resistance and mechanical protection. Question 6. The NEC demands a separate disconnect for machine-room lighting. Which NEC section establishes this requirement? A) 620.51(A) B. 210.8(A) C. 430. D. 250. Answer: A Explanation: NEC 620.51(A) requires a dedicated disconnect for lighting, ventilation, and HVAC in the machine room, separate from the main elevator disconnect.
Specialty Electrical GITS Ultimate Exam
Question 10. What is the minimum ampacity rating for the emergency power feeder to a 75 kW elevator motor, assuming a 125 % emergency load factor? A) 300 A B) 350 A C) 400 A D) 450 A Answer: B Explanation: The motor’s full-load current is about 280 A; applying a 125 % factor yields 350 A, which is the required minimum feeder size. Question 11. Which of the following devices must be included in the elevator’s emergency communication system? A) Two-way intercom with a direct line to the building’s security office B) A simple buzz-in buzzer on the car panel C) A fire alarm pull station only D) A motion-activated speaker system Answer: A Explanation: ASME A17.1 requires a two-way communication device that connects the car to emergency personnel or a designated monitoring station. Question 12. When installing traveling cables, which NEC provision dictates the maximum allowable bend radius? A) 620.44(B) B) 334.30(A) C) 310.15(B)(3)(a) D) 300.5(C) Answer: A Explanation: NEC 620.44(B) specifies the minimum bend radius for traveling cables to prevent conductor damage. Question 13. The pit stop switch is required to be located at what maximum distance from the pit floor?
Specialty Electrical GITS Ultimate Exam
A) 12 in. B) 24 in. C) 36 in. D) 48 in. Answer: B Explanation: NEC 620.22 requires the pit stop switch to be installed no more than 24 in. above the pit floor for accessibility. Question 14. Which of the following is NOT a permissible material for a machine-room disconnect enclosure? A) Cast iron B) Aluminum C) Fiberglass reinforced plastic (FRP) D) Wood Answer: D Explanation: Wood is not permitted for disconnect enclosures because it lacks the required fire-resistance and durability. Question 15. In a dual-elevator bank sharing a single feeder, what NEC factor is used to determine the feeder size? A) No derating; each elevator is sized independently B) Apply a 80 % demand factor to the combined full-load currents C) Use the larger of the two motor full-load currents only D) Apply a 120 % demand factor to the sum of the currents Answer: B Explanation: NEC 620.13 allows a demand factor (often 80 %) for multiple elevators on a common feeder to reduce conductor size. Question 16. Which OSHA standard addresses lock-out/tag-out (LOTO) procedures for elevator maintenance? A) 29 CFR 1910.
Specialty Electrical GITS Ultimate Exam
Question 19. Which testing instrument is most appropriate for verifying insulation resistance of elevator control wiring? A) Clamp-on ammeter B) Megohmmeter C) Infrared thermometer D) Digital multimeter in voltage mode Answer: B Explanation: A megohmmeter (megger) measures high resistance values, ideal for checking insulation integrity of control circuits. Question 20. Under Florida law, how long must a contractor retain elevator maintenance logs? A) 1 year B) 3 years C) 5 years D) 7 years Answer: C Explanation: Florida Statute 713 requires contractors to keep maintenance and inspection records for at least five years. Question 21. Which NEC provision governs the required free area inside a conduit that contains multiple conductors for elevator wiring? A) 310.15(B)(3)(a) B) 376. C) 620. D) 330. Answer: C Explanation: NEC 620.33 specifies the minimum free area that must be maintained in raceways and conduit for elevator installations. Question 22. The fire service key switch must be installed in which location to comply with ASME A17.1?
Specialty Electrical GITS Ultimate Exam
A) Inside the car B) In the machine room, readily accessible to fire-fighter personnel C) On the building’s main electrical panel D) In the building’s lobby Answer: B Explanation: ASME A17.1 requires the fire service key switch to be located in the machine room so fire-fighters can operate it quickly. Question 23. Which of the following is a required feature of a pit sump pump installation? A) Pump must be hard-wired to a dedicated 30 A breaker B) Pump may be powered from the same circuit as the pit stop switch C) Pump must be installed in a watertight enclosure and protected by a GFCI D) Pump must be connected to a low-voltage control circuit only Answer: C Explanation: NEC 620.24 mandates that pit sump pumps be placed in watertight enclosures and protected by GFCI due to the wet environment. Question 24. For a traction-elevator motor, what is the typical voltage class used in Florida commercial installations? A) 120 V single-phase B) 208 V three-phase C) 480 V three-phase D) 600 V three-phase Answer: C Explanation: Most commercial traction elevators use a 480 V three-phase supply, providing sufficient power for the motor. Question 25. Which NEC article outlines the requirements for emergency power systems for elevators? A) 620.
Specialty Electrical GITS Ultimate Exam
C) 6 in. D) 8 in. Answer: B Explanation: Local code adopts NEC 620.32 which mandates at least 4 in. clearance to avoid interference with the car guide rails. Question 29. Which type of door interlock is used to ensure that the car door cannot open unless the hoistway door is fully closed? A) Normally-closed (NC) contact on the car door B) Normally-open (NO) contact on the hoistway door C) Series-wired limit switch on the car floor D) Parallel-wired safety chain breaker Answer: B Explanation: An NO contact on the hoistway door closes only when the door is fully closed, allowing the car door circuit to energize. Question 30. The NEC requires that all conductors in a traveling cable be sized for what minimum temperature rating? A) 60 °C B) 75 °C C) 90 °C D) 105 °C Answer: C Explanation: NEC 620.44 requires traveling cable conductors to be rated for at least 90 °C to handle the heat generated during operation. Question 31. Which of the following is a required test during an elevator acceptance inspection? A) Visual inspection of paint finish B) Brake torque test C) Air-flow measurement of the machine-room ventilation
Specialty Electrical GITS Ultimate Exam
D) Noise level measurement of the motor Answer: B Explanation: The brake torque test verifies that the brake can hold the car safely; it is a mandatory acceptance test per ASME A17.1. Question 32. What is the minimum size of the grounding conductor for a 480 V, 3 - phase, 400 A feeder supplying an elevator? A) 6 AWG copper B) 4 AWG copper C) 2 AWG copper D) 1/0 AWG copper Answer: C Explanation: Using NEC Table 250.122, a 400 A feeder requires a 2 AWG copper grounding conductor. Question 33. Under Florida Statute 713, when must a contractor file a Notice of Commencement for an elevator project? A) At the start of construction B) After the first inspection C) Only if the project exceeds $10, D) No notice is required for elevator work Answer: A Explanation: The Notice of Commencement must be recorded before any construction activity begins. Question 34. Which of the following is the correct method for terminating a motor winding in a conduit system? A) Directly splice to the feeder without a terminal block B) Use a listed motor termination kit inside a junction box rated for the motor voltage C) Twist the wires together and tape them with electrical tape D) Solder the connections and place them in a plastic box
Specialty Electrical GITS Ultimate Exam
Answer: B Explanation: Each motor must have its own overload protection sized to its specific full-load current to ensure proper coordination. Question 38. Which OSHA regulation specifically addresses confined-space entry for pit work? A) 29 CFR 1910. B) 29 CFR 1910. C) 29 CFR 1910. D. 29 CFR 1926. Answer: A Explanation: OSHA 1910.146 defines confined-space entry procedures, applicable to elevator pits. Question 39. According to ASME A17.1, what is the maximum allowable car-door opening time before the door must re-close automatically? A) 5 seconds B) 8 seconds C) 12 seconds D) 15 seconds Answer: B Explanation: The code mandates that car doors close automatically within 8 seconds after being opened, unless overridden for service. Question 40. Which NEC section governs the installation of conduit in a machine-room that is also a hazardous (Class II) location? A) 500. B. 620. C. 210. D. 300. Answer: A
Specialty Electrical GITS Ultimate Exam
Explanation: NEC 500.12 provides the requirements for conduit and wiring methods in hazardous (Class II) locations, which may apply to certain machine-room environments. Question 41. What is the minimum voltage rating for a disconnect switch used for a 480 V elevator feeder? A) 250 V B) 300 V C) 480 V D) 600 V Answer: C Explanation: The disconnect must be rated for at least the system voltage; therefore, a 480 V rating is required. Question 42. Which of the following is NOT a permitted method for grounding the elevator car frame? A) Direct connection to the building grounding electrode system B) Using a dedicated grounding conductor run from the car frame to the machine-room ground bar C) Relying solely on the car’s steel construction to serve as a ground path D) Connecting the car frame to a grounding lug on the motor controller Answer: C Explanation: The car’s steel alone does not provide a reliable ground; an intentional grounding conductor or connection is required. Question 43. Under Florida law, which type of insurance is mandatory for a specialty-elevator contractor? A) Professional liability insurance only B) Workers’ compensation and general liability insurance C) Flood insurance D) Cyber-risk insurance Answer: B
Specialty Electrical GITS Ultimate Exam
Explanation: A non-return relay (interlock) ensures that the emergency power cannot unintentionally energize the normal power circuit. Question 47. According to ASME A17.1, what is the purpose of the “overspeed governor”? A) To increase the car’s speed during peak traffic B) To detect excessive speed and trigger a safety brake C) To monitor the motor temperature D) To control the door closing speed Answer: B Explanation: The overspeed governor monitors car speed and activates the safety brake if the car exceeds a preset speed limit. Question 48. In a modern elevator controller, which communication protocol is commonly used for diagnostics and remote monitoring? A) Modbus RTU B. BACnet IP C) CANbus (Controller Area Network) D. Ethernet/IP Answer: C Explanation: CANbus is widely used in elevator controllers for high-speed, reliable communication between components. Question 49. Which NEC article governs the installation of conduit and cable in a hoistway that serves as a fire-rated shaft? A) 300. B) 620. C) 500. D) 210. Answer: B Explanation: NEC 620.31 provides specific requirements for wiring methods in hoistways, including fire-rating considerations.
Specialty Electrical GITS Ultimate Exam
Question 50. What is the required minimum size of a conduit that houses a 4 - wire, 3-phase, 500 A feeder for an elevator? A) 2 in. EMT B) 3 in. RMC C) 4 in. PVC D) 6 in. EMT Answer: B Explanation: A 500 A feeder typically requires a 3 in. RMC to provide adequate space for conductors and meet free-area requirements. Question 51. Which of the following is a required feature of the elevator’s fire-service recall key switch? A) Must be a standard residential key lock B) Must be a key-operated, non-resettable, single-pole, double-throw (SPDT) switch with a locked position C) Must have a built-in battery backup D) Must be located on the car’s control panel Answer: B Explanation: The fire-service recall key switch is a non-resettable SPDT device that requires a special key to operate, preventing accidental activation. Question 52. Under NEC 620.61, where must the overcurrent protective device (OCPD) for the motor feeder be located? A) Inside the car’s control panel B) At the feeder’s origin, no more than 6 ft from the disconnecting means C) In the pit, next to the pit stop switch D) At the main service entrance only Answer: B Explanation: NEC 620.61 requires the OCPD to be installed at the feeder’s origin and not more than 6 ft from the disconnecting means.
Specialty Electrical GITS Ultimate Exam
Question 56. When performing a routine brake test, what is the minimum safe distance the car must be allowed to fall under gravity? A) 1 ft B) 2 ft C) 3 ft D) 4 ft Answer: B Explanation: ASME A17.1 specifies a 2-ft free-fall distance for brake torque testing to ensure safety while providing measurable data. Question 57. Which NEC section requires that all equipment in the machine room be listed for the environment in which it is installed? A) 110.3(B) B) 250. C) 300. D) 410. Answer: A Explanation: NEC 110.3(B) mandates that equipment be installed per its listing and labeling, ensuring suitability for the machine-room environment. Question 58. What is the primary function of a “door-lock solenoid” in an elevator system? A) To power the car’s lighting B) To physically lock the doors when the car is not at a landing C) To provide a signal to the controller that the doors are closed D) To generate a magnetic field for the motor Answer: B Explanation: The door-lock solenoid mechanically locks the doors, preventing them from opening when the car is not at a floor. Question 59. According to NEC, which color is used to identify a grounding conductor in a traveling cable assembly?
Specialty Electrical GITS Ultimate Exam
A) Black B) Red C) Green or bare D) White Answer: C Explanation: NEC requires grounding conductors to be green, green-with-yellow stripe, or bare. Question 60. In a dual-elevator system sharing a single machine-room, how must the disconnects be arranged to satisfy NEC 620.51? A) One common disconnect for both elevators is sufficient B) Each elevator must have its own dedicated disconnect, plus a separate disconnect for lighting and ventilation C) Only a single disconnect for the entire machine-room is required D) Disconnects are not required if the system uses a VVVF drive Answer: B Explanation: NEC 620.51 requires a dedicated disconnect for each elevator’s power, plus separate disconnects for lighting, ventilation, and HVAC. Question 61. Which of the following statements about “selective operation” of emergency power for elevators is correct? A) All elevators in the building must receive emergency power simultaneously B) Only the elevator that is in use at the time of power loss receives emergency power C) The system can be programmed to supply emergency power to a predetermined group of elevators based on fire-service requirements D) Selective operation is prohibited by ASME A17. Answer: C Explanation: Selective operation allows the fire-service recall to energize only specific elevators, reducing load on the emergency source.
