ELECTRICAL WIRING:RESIDENTAL-6 PLANS
18th Edition
ISBN: 9781305098329
Author: MULLIN
Publisher: CENGAGE L
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Chapter 27, Problem 13R
a.
To determine
Find whether the grounded neutral conductor is allowed to be buried directly in the ground.
b.
To determine
Find the NEC article that provides the statement given in Part a.
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Students have asked these similar questions
When 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 matter
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. 250.122
Service-lateral conductors are required to be insulated except for the grounded neutral conductor when it is___.
A. Bare copper used in a raceway
B. Bare copper & part of a cable assembly that is identified for ground use
C. copper-clad Aluminum
D. A or B
Chapter 27 Solutions
ELECTRICAL WIRING:RESIDENTAL-6 PLANS
Ch. 27 - Define the Service Point. ______________Ch. 27 - Define service-drop conductors.Ch. 27 - Prob. 3RCh. 27 - a. The service head must be located (above)...Ch. 27 - Prob. 5RCh. 27 - When a conduit is extended through a roof, must it...Ch. 27 - a. What size and type of conductors are installed...Ch. 27 - How and where is the grounding electrode conductor...Ch. 27 - What are the minimum distances or clearances for...Ch. 27 - What are the minimum size ungrounded conductors...
Ch. 27 - What is the minimum size copper grounding...Ch. 27 - What is the recommended height of a meter socket...Ch. 27 - Prob. 13RCh. 27 - Prob. 14RCh. 27 - Prob. 15RCh. 27 - Prob. 16RCh. 27 - Prob. 17RCh. 27 - Prob. 18RCh. 27 - Prob. 19RCh. 27 - Prob. 20RCh. 27 - Prob. 21RCh. 27 - Prob. 22RCh. 27 - Prob. 23RCh. 27 - Prob. 24RCh. 27 - Prob. 25RCh. 27 - Prob. 26RCh. 27 - Prob. 27RCh. 27 - Prob. 28RCh. 27 - Prob. 29RCh. 27 - Prob. 30RCh. 27 - Prob. 31RCh. 27 - Prob. 32RCh. 27 - Prob. 33RCh. 27 - Prob. 34RCh. 27 - Prob. 35RCh. 27 - Prob. 36RCh. 27 - Prob. 37RCh. 27 - Prob. 38RCh. 27 - Prob. 39RCh. 27 - Prob. 40RCh. 27 - Prob. 42RCh. 27 - Prob. 43RCh. 27 - Prob. 44RCh. 27 - Prob. 45RCh. 27 - Prob. 46RCh. 27 - Prob. 47RCh. 27 - Prob. 48R
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- If a grounding electrode conductor is connected at the first system disconnecting means or overcurrent device, the bonding jumper is sized the same as the ____. Select one: A. EQUIPMENT BONDING JUMPER B. POSITIVE CONDUCTOR C. SUPPLY-SIDE BONDING JUMPER D. NEUTRAL CONDUCTORarrow_forwardTo testing installation of grounds, the usual procedure is to connect one lead of the megohmmeter to one of the conductors, then the other lead is___. A, connected to another conductor b, connected to the conduit or raceway c. Connected to a special grounding electrode on the megohmmeter d. Left unconnectedarrow_forward2. Imagine that you're asked to install an auxiliary grounding electrode at the base of a lighting pole in aparking lot. This auxiliary grounding electrode will be connected to theA. lighting pole's electrical service equipment grounding conductor.B. electrical service's grounding electrode conductor.C. next lighting pole's auxiliary grounding electrode.D. lighting pole's neutral conductor.arrow_forward
- Equipment Grounding 13. A metal elbow is a part of a nonmetallic, underground raceway. The elbow won't need to be grounded as long as it's encased in at least _______ inches of concrete. A. 4 B. 5 C. 2 D. 6 13 A. Which of the following can be in the form of a wire and is required to be installed with feeders and branch circuits? A. Phased neutral conductorB. Equipment grounding conductor C. Grounded neutral conductorD. Grounding electrode conductorarrow_forwardEquipment 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.arrow_forwardA(n) _________ is a reliable conductor used to ensure the required electrical conductivity between metal parts required to be electrically connected. a) Equipment bonding jumper b) Bonding conductor of jumper c) Main bonding jumper d) Equipment grounding conductorarrow_forward
- - Loads, Service, and Overcurrent Protection 6.a. The general lighting load is based on a _______ per square foot basis.A. kilowattB. number of circuitsC. volt-ampereD. general illumination6.b. What's the primary disadvantage of using copper conductors?A. AvailabilityB. WeightC. CostD. Durabilityarrow_forward14. A grounded circuit conductor and the equipment grounding conductor should always be joined at theservice by aA. steel raceway.B. main bonding jumper.C. bus bar.D. short length of aluminum conductor.arrow_forward1. 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. 250.122 3. Which of the following statements about grounding electrical equipment is true?A. If no wire-type equipment grounding conductors are present with the branch circuits, the equipment grounding terminal bar isn't required.B. Grounding electrical equipment increases the possibility of metal parts remaining energized.C. The nonmetal parts of some electrical equipment are required to be connected to an equipment grounding conductor. D. Equipment grounding conductors can be spliced together outside of a grounded metal box. 4. Which of the following is a condition that must be met in order to qualify for the exemption…arrow_forward
- The minimum point of attachment of the service-drop conductors to a building must in no case be less than above finished grade. A. 8 ft B. 10 ft C. 12 ft D. 15 ftarrow_forwardA means shall be provided in each metal box over 100 cubic inches for the connection of an equipment grounding conductor. The means shall be permitted to be ______. a tapped hole the cover screw III. a screw used to mount the box (a.) I only (c.) I & II only (b.) II only (d.) I, II or IIIarrow_forwardThe ohms per 1000 feet measurements for conductors can be found in _____. Select one: a. article 100 definitions b. 310.15(B)(16) c. annex C d. chapter 9 Table 8arrow_forward
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