11.a. Which of the following is a point where a grounding electrode conductor connection must be made in the communication system? A. The flexible nonmetallic power service raceway B. The grounding electrode conductor or metal enclosure for a grounding electrode conductor C. The space opposite the service equipment enclosure D. The grounded exterior metal water piping system within six feet of the point where it enters the building 11.b. The equipment grounding conductor of a pump motor for a swimming pool must be grounded with a solid copper conductor that's no smaller than A. AWG 8. B. AWG 12. C. AWG 10. D. AWG 6.

11.a. Which of the following is a point where a grounding electrode conductor connection must be made in the communication system? A. The flexible nonmetallic power service raceway B. The grounding electrode conductor or metal enclosure for a grounding electrode conductor C. The space opposite the service equipment enclosure D. The grounded exterior metal water piping system within six feet of the point where it enters the building 11.b. The equipment grounding conductor of a pump motor for a swimming pool must be grounded with a solid copper conductor that's no smaller than A. AWG 8. B. AWG 12. C. AWG 10. D. AWG 6.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter16: Installation Of Heating, Cooling, And Refrigeration Systems

Section: Chapter Questions

Problem 13RQ

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12. If overcurrent protection is provided in the transformer of a separately derived system, which of the following statements is correct?A. A ground electrode must be present at the transformer and the building's disconnect.B. There's no need for service equipment or a panelboard in the separate building.C. An equipment grounding conductor must be run with the conductors between the transformer and the building's disconnect.D. The neutral should be bonded to the equipment grounding conductor at the service equipment in the separate building.
4.) Conductors that supply a single motor used in a continous duty application sall have an ampacity of __________________ of the motor's full load current rating. a.) Not less than 300%b.) Not less than 125%C.) Not less than 250%d.) None of the above 5.) The _________ on the nameplate of motor is an indication of the overload capacity of the motor a.) Code letterb.) Design Letterc) Insulation classd.) None of the above 6.) The __________ describes motor's ability to withstand temperature overtime a.) Code letterb.) Design letterc.) insulation classd.) None of the above
Calculate the following. a) Expected voltage at “A” with switch SW1 open. b) Expected voltage at “A” with switch SW1 closed.
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Explain the principles of power system protection, including the role of relays and circuit breakers in safeguarding the grid.
All answers should be written in complete sentences. Calculations should be shown in detail, and Codereferences should be cited when appropriate. Unless otherwise stated, all conductors are copper type THHN, and the supply is AC. 1. What is the minimum conductor ampacity, overload protection, and dual-element fuserating for a circuit supplying a 560-volt, 3-phase, code J, 40°C, 125-horsepower motorwith a nameplate full-load current of 115 amperes?
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12. Which of the following statements about ground faults is true?A. They can happen if a conductive tool is dropped in an energized equipment's electrical enclosure.B. They usually occur between any grounded circuit conductor and the equipment grounding conductor.C. They can't result from human error.D. They're often normal and typically intentional.