Download PrepIQ Lake County 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 the electrical requirements for elevators and escalators? A) Article 210 B) Article 250 C) Article 620 D) Article 430 Answer: C Explanation: NEC Article 620 contains the special provisions for elevator and escalator electrical systems, including wiring methods, over-current protection, and safety circuits. Question 2. Under Florida law, which code takes precedence when a conflict exists between the NEC and the Florida Building Code (FBC) for elevator installations? A) NEC B) FBC C) The stricter of the two codes D) The code adopted by the local jurisdiction Answer: C Explanation: When NEC and FBC provisions overlap, the more restrictive requirement must be followed, ensuring the highest safety level. Question 3. In Lake County, which license is required to perform electrical work on elevators? A) General Electrical Contractor (GEC) license B) Specialty Electrical – Elevator (GITS) license C) Low-Voltage Systems license D) Mechanical Contractor license Answer: B Explanation: The GITS (General Installation and Testing Specialty) license authorizes electricians to work on elevator specialty electrical systems in Florida.
Specialty Electrical GITS Ultimate Exam
Question 4. According to ASME A17.1, what is the minimum voltage rating for the emergency power supply to an elevator’s lighting system? A) 120 V AC B) 208 V AC C) 240 V AC D) 277 V AC Answer: A Explanation: ASME A17.1 requires emergency lighting to be supplied by a 120 V AC source to ensure compatibility with standard emergency lighting fixtures. Question 5. Which of the following is NOT a required label on the main disconnect for an elevator motor circuit? A) “Elevator Motor – Service Disconnect” B) “Maximum Load 120 A” C) “Authorized Personnel Only” D) “Do Not Operate During Maintenance” Answer: D Explanation: While “Do Not Operate During Maintenance” is a good practice, it is not a mandatory label per NEC 620.51. The other three labels are required for identification and safety. Question 6. When sizing a feeder to a single-elevator machine room, which demand factor is applied to the motor’s full-load current according to NEC 620.53? A) 100 % B) 80 % C) 125 % D) 150 % Answer: B Explanation: NEC 620.53 permits a 80 % demand factor for the motor’s full-load current when the feeder serves only one elevator, reducing conductor size.
Specialty Electrical GITS Ultimate Exam
Question 10. In a VFD-driven elevator motor, where must the motor cable shield be terminated? A) At the motor terminal block only B) At the VFD chassis only C) Both at the motor and the VFD, using a low-impedance ground D) It may be left unconnected Answer: C Explanation: Proper shielding requires grounding at both ends to minimize electromagnetic interference and protect the VFD from noise. Question 11. Which of the following is considered a “safety circuit” under NEC 620.51? A) Car operating panel lighting B) Pit stop switch C) Machine-room general illumination D) Hall call button circuit Answer: B Explanation: The pit stop switch is a mandatory safety interlock that prevents elevator movement when the car is in the pit; it is part of the required safety circuit. Question 12. What is the minimum ampere rating for a dedicated lighting circuit in the elevator machine room per NEC? A) 15 A B) 20 A C) 30 A D) 40 A Answer: B Explanation: NEC requires a dedicated 20-ampere circuit for machine-room lighting to ensure sufficient illumination for maintenance and inspection.
Specialty Electrical GITS Ultimate Exam
Question 13. Which of the following is the correct order of inspection phases for a new elevator installation in Lake County? A) Final → Rough-in → Pre-final B) Rough-in → Pre-final → Final C) Pre-final → Rough-in → Final D) Rough-in → Final → Pre-final Answer: B Explanation: The typical sequence is Rough-in (structural and basic wiring), Pre-final (functional testing of safety circuits), and Final (full operational verification). Question 14. A permanent-magnet synchronous motor (PMSM) used in a gearless elevator requires which type of control? A. Direct-on-line starter B. Variable Frequency Drive with vector control C. Star-Delta starter D. Soft starter only Answer: B Explanation: PMSMs need precise speed and torque control, which is achieved with a VFD employing vector (field-oriented) control. Question 15. Which NEC article governs the installation of GFCI protection for receptacles in the elevator pit? A) Article 210.8(A)(3) B) Article 625 C) Article 300. D) Article 410 Answer: A Explanation: NEC 210.8(A)(3) requires GFCI protection for receptacles in wet or potentially wet locations such as elevator pits.
Specialty Electrical GITS Ultimate Exam
Question 19. According to ASME A17.1, what is the minimum illumination level required in the machine room for safe maintenance? A) 5 lux B) 10 lux C) 30 lux D) 50 lux Answer: C Explanation: ASME A17.1 specifies a minimum of 30 lux (approximately 3 foot-candles) in the machine room to ensure adequate visibility for maintenance tasks. Question 20. Which of the following is NOT a permissible method for routing traveling cables between the car and the machine room? A) Through a dedicated cable tray in the hoistway B) Inside a flexible metal conduit (FMC) rated for hoistway use C) Via a raceway that also carries power conductors for the motor D) Using a flat-type traveling cable specifically listed for elevators Answer: C Explanation: NEC 620.21 prohibits mixing power conductors with traveling cables in the same raceway to avoid electromagnetic interference and mechanical wear. Question 21. What is the required minimum size of the grounding electrode conductor (GEC) for a 400-A elevator feeder per NEC Table 250.122? A) #6 AWG copper B) #4 AWG copper C) #2 AWG copper D) #8 AWG copper Answer: B Explanation: Table 250.122 indicates a #4 AWG copper GEC for a 400-ampere feeder, providing sufficient fault-current carrying capacity.
Specialty Electrical GITS Ultimate Exam
Question 22. Which of the following devices must be tested during the pre-final inspection of an elevator? A) Car operating panel push-buttons only B) All safety interlocks, including pit stop and door locks C) Machine-room lighting only D) Emergency power transfer switch only Answer: B Explanation: The pre-final inspection verifies that all mandatory safety interlocks are correctly wired and functional before final acceptance. Question 23. In a regenerative braking system, what is the primary purpose of the brake resistor? A) To store regenerative energy B) To dissipate excess energy as heat when the VFD cannot accept it C) To provide a backup mechanical brake D) To protect the motor from over-voltage Answer: B Explanation: The brake resistor converts surplus regenerated power into heat, protecting the VFD and preventing over-voltage conditions. Question 24. Which NEC rule governs the allowable temperature rating for conductors installed in a hoistway where ambient temperature may reach 50 °C? A) NEC 310.15(B)(2)(a) – Ambient temperature correction factors B) NEC 300.5 – Conduit fill C) NEC 210.20 – Branch-circuit rating D) NEC 625 – Electric vehicle charging Answer: A Explanation: NEC 310.15(B)(2)(a) provides temperature correction factors for conductors based on ambient temperature, affecting ampacity calculations.
Specialty Electrical GITS Ultimate Exam
Question 28. Which of the following is a required feature of the elevator’s emergency communication system per ASME A17.1? A) Voice-activated control of the car B) Two-way audio with a dedicated emergency handset C) Only a visual alarm light is required D) Integration with the building’s public address system only Answer: B Explanation: ASME A17.1 mandates a two-way audio communication system, typically a handset, to allow occupants to contact rescue personnel. Question 29. According to NEC 210.4(B), how many separate disconnecting means are required for a multi-elevator system sharing a common feeder? A) One for the entire feeder B) One per elevator motor circuit C) One per floor served D) One per control panel Answer: B Explanation: NEC 210.4(B) requires a separate disconnecting means for each motor circuit when multiple elevators share a feeder. Question 30. Which of the following is the correct method for supporting a rigid metal conduit (RMC) in an elevator machine room? A) Every 3 ft (0.9 m) B) Every 8 ft (2.4 m) C) Every 10 ft (3 m) D) Every 12 ft (3.6 m) Answer: B Explanation: NEC 358.30 permits RMC support at intervals not exceeding 8 ft, ensuring adequate mechanical support.
Specialty Electrical GITS Ultimate Exam
Question 31. What is the purpose of a “slack rope switch” in an elevator safety circuit? A) To detect over-speed conditions B) To sense excessive rope tension indicating a possible overspeed C) To monitor the amount of slack in the hoist ropes, preventing operation if the rope is too loose D) To control the door interlock timing Answer: C Explanation: The slack rope switch monitors rope tension; excessive slack can indicate a dangerous condition, so it trips the safety circuit. Question 32. Which of the following is the minimum voltage rating for the emergency power source that supplies the elevator’s fire-fighter recall circuit? A) 120 V AC B) 240 V AC C) 480 V AC D) 24 V DC Answer: A Explanation: The fire-fighter recall circuit is typically powered from a 120 V AC emergency source to ensure compatibility with standard building emergency power systems. Question 33. In a VFD-controlled elevator, which harmonic mitigation technique is most commonly required? A) Series reactors B) Passive harmonic filters C) Active front-end converters D) Phase-shifting transformers Answer: B Explanation: Passive harmonic filters are frequently installed to reduce the 5th, 7th, 11th, and 13th harmonics generated by VFDs, protecting the building’s power quality.
Specialty Electrical GITS Ultimate Exam
Question 37. According to NEC 625, what is the maximum permissible voltage for a low-voltage elevator control circuit? A) 30 V DC B) 50 V DC C) 100 V DC D) 120 V AC Answer: B Explanation: NEC 625 limits low-voltage power-limited circuits to 30 V DC for Class 2 circuits, but elevator control circuits often fall under Class 3, allowing up to 50 V DC. Question 38. Which of the following statements about “phase monitoring” relays is true? A) They only detect over-current conditions. B) They monitor for phase loss, reversal, and undervoltage. C) They are optional for all elevator installations. D) They replace the need for a main disconnect. Answer: B Explanation: Phase-monitoring relays detect loss of phase, phase reversal, and undervoltage, providing critical protection for three-phase motor loads. Question 39. When a building’s emergency generator supplies power to an elevator, which of the following must be provided to ensure safe operation? A) A soft-starter for the motor B) Automatic transfer switch with interlock C) A dedicated transformer for the elevator only D) A separate fire-fighter service panel Answer: B Explanation: An automatic transfer switch with a proper interlock guarantees that utility and generator power cannot be connected simultaneously, meeting NEC 620.55.
Specialty Electrical GITS Ultimate Exam
Question 40. Which of the following is the correct method for bonding the metal conduit that serves as the equipment grounding conductor for elevator power circuits? A) Bond at each conduit joint B) Bond only at the main disconnect C) No bonding required if the conduit is continuous D) Bond at both ends of the conduit run Answer: D Explanation: Bonding at both ends ensures a low-impedance path for fault currents, complying with NEC 250.118. Question 41. In an elevator control cabinet, which of the following devices is responsible for timing the door-closing sequence? A) Contactor B) Timer relay C) Over-current protective device D) Phase-monitoring relay Answer: B Explanation: The timer relay provides the delay between door-open and door-close commands, ensuring safe passenger loading. Question 42. According to ASME A17.1, what is the minimum required fire-resistance rating for the machine-room wall separating it from the hoistway? A) 30 minutes B) 1 hour C) 2 hours D) No rating required Answer: B Explanation: A minimum 1 - hour fire-resistance rating is required to protect the machine room from fire spread originating in the hoistway.
Specialty Electrical GITS Ultimate Exam
A) NEC 300.
B) NEC 300.
C) NEC 620.
D) NEC 625.
Answer: C Explanation: NEC 620.21 specifically addresses the protection of elevator wiring in hoistways, mandating rigid conduit or other approved methods. Question 47. Which of the following statements about “dynamic braking” in an elevator is correct? A) It stores kinetic energy in a flywheel. B) It uses the motor as a generator to dissipate energy in a resistor. C) It requires a separate mechanical brake to stop the car. D) It is only applicable to hydraulic elevators. Answer: B Explanation: Dynamic braking converts the motor into a generator, sending the generated power to a resistor where it is dissipated as heat. Question 48. In Lake County, who is authorized to perform the final inspection and issue the certificate of occupancy for a new elevator? A) The building’s general contractor B) A licensed electrical contractor C) The certified elevator inspector employed by the county D) The elevator manufacturer’s field engineer Answer: C Explanation: The county’s certified elevator inspector conducts the final inspection and issues the occupancy certificate, ensuring compliance with all codes. Question 49. Which of the following devices must be installed in the pit to satisfy NEC requirements for lighting? A) A motion-sensor LED fixture rated for wet locations
Specialty Electrical GITS Ultimate Exam
B) A fluorescent fixture without a GFCI outlet C) A standard incandescent lamp with a regular receptacle D) A high-intensity discharge (HID) lamp without a separate switch Answer: A Explanation: NEC requires pit lighting to be in a wet-location rated fixture, and a motion-sensor LED provides energy efficiency and meets the rating. Question 50. What is the minimum voltage drop allowed for feeder conductors supplying an elevator machine room, per NEC recommendations? A) 2 % B) 3 % C) 5 % D) 10 % Answer: B Explanation: NEC recommends a maximum of 3 % voltage drop for feeder circuits to critical loads such as elevator equipment to ensure proper operation. Question 51. Which of the following is the correct method for labeling the emergency power switch in the machine room? A) “EMG POWER – DO NOT OPERATE” B) “EMERGENCY POWER – ISOLATE” C) “EMERGENCY POWER – LOCK OUT TAG OUT (LOTO) REQUIRED” D) “EMERGENCY POWER – TURN OFF ONLY DURING MAINTENANCE” Answer: C Explanation: NEC 620.51 requires that emergency power switches be clearly labeled and indicate that lock-out/tag-out procedures must be followed. Question 52. Which of the following is the proper way to terminate a shielded control cable that supplies 24 V DC to the car operating panel? A) Connect the shield to the chassis ground only. B) Connect the shield to the neutral conductor.
Specialty Electrical GITS Ultimate Exam
C) Monitors the tension of the hoist ropes. D) Triggers the fire-fighter recall circuit. Answer: A Explanation: The hall position indicator displays the car’s present floor location to passengers in the lobby. Question 56. Which of the following is the correct minimum size for a grounding electrode conductor (GEC) for a 250 A feeder serving an elevator? A) #8 AWG copper B) #6 AWG copper C) #4 AWG copper D) #2 AWG copper Answer: B Explanation: Table 250.122 specifies a #6 AWG copper GEC for a 250-ampere feeder. Question 57. According to NEC 625.20, what is the maximum allowable voltage for a Class 2 power-limited circuit used for elevator control? A) 30 V DC B) 50 V DC C) 120 V AC D) 240 V AC Answer: B Explanation: Class 2 circuits are limited to 50 V DC (or 120 V AC under certain conditions), but elevator control circuits typically use 24 V DC, well within the limit. Question 58. Which of the following devices is required to provide a “hold-open” function for the car door when the car is at a landing? A) Door lock solenoid B) Car-door hold-open relay C) Pit stop switch D) Hall-call button
Specialty Electrical GITS Ultimate Exam
Answer: B Explanation: The car-door hold-open relay maintains the door open while the car is present at a floor, preventing premature closure. Question 59. What is the minimum required fire-rated enclosure for the elevator controller cabinet located in the machine room? A) No rating required if the cabinet is metal. B) 30-minute fire rating. C) 1-hour fire rating. D) 2-hour fire rating. Answer: C Explanation: ASME A17.1 mandates a 1-hour fire-rated enclosure for the controller cabinet to protect critical equipment during a fire. Question 60. Which of the following best describes the purpose of a “slack rope switch” in the elevator safety circuit? A) To detect over-speed conditions. B) To sense excessive rope slack that could indicate a broken rope. C) To monitor the position of the car. D) To control the hoistway door lock. Answer: B Explanation: The slack rope switch trips the safety circuit if the hoist ropes become too slack, indicating a possible failure. Question 61. In a multi-elevator building, what is the required minimum spacing between individual elevator machine rooms according to NEC? A) 6 ft (1.8 m) B) 10 ft (3 m) C) 15 ft (4.5 m) D) No specific spacing is required. Answer: D
