Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Textbook Question
Chapter 8, Problem 7R
a. What is the ampere rating of circuit A16? _________________
b. What is the conductor size of circuit A16? _________________
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1.A. When a grounding electrode conductor is connected to the grounded conductor within a serviceequipment enclosure, it's required to be connected to the _______ terminal bus.A. service bonding jumperB. equipment groundingC. grounded conductorD. main bonding jumper1.B. The grounding electrode conductor for a DC system will have that conductor sized no smaller than_______ AWG aluminum.A. 8B. 6C. 10D. 121.C. What are the two key aspects of the installation of the grounding electrode conductor?A. Sizing and protectionB. Bonding and accessibilityC. Materials and placementD. Location and safety
11. Specific rules apply for the installation of _______, but no identification requirements for them exists.A. grounding electrode conductorsB. grounding electrodes.C. main bonding jumpers.D. equipment grounding conductors.
Equipment Grounding
10. Which of the following statements about ground faults is true?A. They usually occur between any grounded circuit conductor and the equipment grounding conductor. B. They're often normal and typically intentional.C. They can't result from human error.D. They can happen if a conductive tool is dropped in an energized equipment's electrical enclosure.
Chapter 8 Solutions
Electrical Wiring Residential
Ch. 8 - Prob. 1RCh. 8 - Prob. 2RCh. 8 - A good rule to follow is to never load a circuit...Ch. 8 - Prob. 4RCh. 8 - For residential wiring, not less than one...Ch. 8 - For this residence, what are the estimated...Ch. 8 - a. What is the ampere rating of circuit A16?...Ch. 8 - The NEC requires what type of unique protection...Ch. 8 - Prob. 9RCh. 8 - Prob. 10R
Ch. 8 - Prob. 11RCh. 8 - Prob. 12RCh. 8 - Is the switched portion of an outlet mounted...Ch. 8 - The following problems pertain to luminaires in...Ch. 8 - How many switches are in the bedroom circuit, what...Ch. 8 - The following is a layout of the lighting circuit...Ch. 8 - Prob. 17RCh. 8 - The Code uses the terms watts, volt-amperes, kW,...Ch. 8 - How many 14 AWG conductors are permitted in a...Ch. 8 - A 4 in. 1 in. octagon box has one cable clamp and...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- To interconnect grounding electrode and form grounding electrode system, connect the________ to a busbar. A. Neutral Disconnect link and their grounding electrode conductor B. Grounding electrode conductor and their bond jumpers C. Bounding jumpers and their equipment grounding conductors D. Equipment grounding conductors and their neutral Disconnect linkarrow_forwardWhen connecting a multiwire (3-wire) circuit to a single phase panel, one ungrounded conductor must be connected to the ____ phase and the other ungrounded conductor must be connected to the ____ phase. Select one: a. A, A b. B, B c. A, B d. doesn’t matterarrow_forwardof p o How many conductors enter the ceiling fan/light wall box? Switch ond out let boxes s tirst 10. What type and size of box may be used for the ceiling fan/light wall box?. 11. What type of covers are used with 4 in. square outlet boxes? 12. a. Does the circuit for the Master Bedroom have a grounded circuit conductor? b. Does it have an equipment grounding conductor? c. Explain the difference between a "grounded" conductor and an "equipment grounding" conductor. 13. Approximately how many feet (meters) of 2-wire cable and 3-wire cable are needed to ft complete the circuit supplying the Master Bedroom? Two-wire cable: ft (- m). m). Three-wire cable: 14. If the cable is laid in notches in the corner studs, what protection for the cable must be provided? 15. How high are the receptacles mounted above the finished floor in this bedroom? 16. Approximately how far from the bedroom door is the first receptacle mounted? (See the plans.) 17. What is the distance from the finished floor to…arrow_forward
- 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.arrow_forward11. Which of the following statements about the use of structural steel as an equipment grounding conductor (EGC) in an AC system is correct? A. Structural steel can be used as an EGC when it's bonded at both ends.B. Structural steel isn't allowed for use as an EGC.C. Structural steel must have an EGC bonding jumper every three feet of structure. D. Structural steel can be used as an EGC bonding jumper between panelboards. 12. Which of the following statements about equipment grounding conductors is true? A. They increase voltages above ground potential on conductors and equipment enclosures during normal operation. B. Unacceptable equipment grounding conductors include conduit, tubing, and cable armor. C. They must be capable of withstanding the higher level of ground-fault current to perform their safety function. D. When they're far from their associated circuit conductors, impedance values are kept as low as possible during ground-fault conditions. 13. Imagine that…arrow_forward5. To interconnect grounding electrodes and form a grounding electrode system, connect the _______ to abusbar.A. bonding jumpers and their equipment grounding conductorsB. equipment grounding conductors and their neutral disconnect linkC. grounding electrode conductors and their bonding jumpersD. neutral disconnect links and their grounding electrode conductorsarrow_forward
- 1. Alternating current systems of less than _______ volts are required to be grounded if they're installed outside as overhead conductors. A. 50 B. 100 C. 75 D. 120arrow_forward8.a. A grounded conductor is a conductor that has been _______ grounded.A. electronicallyB. accidentallyC. intentionallyD. partially8.b. Which of the following is a sheet-metal or nonmetallic enclosure equipped with hinged or removablecovers that's used to supplement wiring space?A. Auxiliary gutterB. Junction boxC. Trolley buswayD. Outlet boxarrow_forward3. Which of the following statements about the use of structural steel as an equipment grounding conductor(EGC) in an AC system is correct?A. Structural steel isn't allowed for use as an EGC.B. Structural steel can be used as an EGC bonding jumper between panelboards.C. Structural steel must have an EGC bonding jumper every three feet of structure.D. Structural steel can be used as an EGC when it's bonded at both ends.arrow_forward
- equipment grounding 1. The only exception to the need for all information technology equipment to be satisfactorily grounded is where the equipment is A. DC powered.B. backup generator powered. C. double-insulated.D. isolated equipment. 2. Which section of the National Electrical Code lists sizing requirements for wire-type equipment grounding conductors? A. 250.66 B. 250.118 C. 250.4 D. 250.122arrow_forward3. The three bus-bar conductors in an outdoor sub-station are supplied by units ofpost insulators. Each unit consists of a stack of 3-pin insulators fixed one on the top of the other. The voltage across the lowest insulator is 8-45 kV and that across the next is 7-25 kV. Find the bus-bar voltage of the station. [38-8 kV]arrow_forward10. Main bonding jumpers are required to be made of _______ or other corrosion-resistant material.A. copperB. aluminumC. copper-clad aluminumarrow_forward
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