EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Textbook Question
Chapter 15, Problem 15R
- a. Must the metal frame of an electric clothes dryer be grounded? ___________
- b. Is it permitted to ground the metal frame of an electric clothes dryer to the neutral conductor? ___________
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2. 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.
Chapter 15 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 15 - Prob. 1RCh. 15 - Prob. 2RCh. 15 - What special type of switch is controlling the...Ch. 15 - Prob. 4RCh. 15 - The total estimated volt-amperes for Circuit B10...Ch. 15 - If an attic is accessible through a scuttle hole,...Ch. 15 - Prob. 7RCh. 15 - Prob. 8RCh. 15 - The following is a layout of the lighting circuit...Ch. 15 - Prob. 10R
Ch. 15 - Prob. 11RCh. 15 - a. What is the minimum power demand allowed by the...Ch. 15 - What is the maximum permitted current rating of a...Ch. 15 - Prob. 14RCh. 15 - a. Must the metal frame of an electric clothes...Ch. 15 - An electric dryer is rated at 7.5 kW and 120/240...Ch. 15 - When a metal junction box is installed as part of...Ch. 15 - A residential air-conditioning unit is installed...Ch. 15 - The Code states that a means must be provided to...
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- 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.arrow_forward____ current occurs when the system neutral is grounded improperly downstream from the service equipment. Select one: A. PHASED B. OBJECTIONABLE C. POSITIVE D. NEGATIVEarrow_forward12. 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_forward
- To 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_forwardQUESTION 9 When a ground wire is connected to an interior gas piping system and the underground portion of the gas pipe into the building is plastic, which of the following is (or are) true? a A.This would be approved by code as the gas pipe is only being bonded to the electrical system. b B.This installation would be approved by code, as the gas pipe is not a grounding electrode. c C.Both A and B d D.Neither A nor Barrow_forward6.a. Extreme _______ may cause some nonmetallic conduits to become brittle and therefore moresusceptible to damage from physical contact.A. coldB. corrosionC. voltageD. heat6.b. Snap switches are permitted to be grouped or ganged in an enclosure provided the voltage between theadjacent snap switches does not exceed ___ V.A. 400B. 300C. 200D. 100arrow_forward
- 24. The National Electrical Code® _____ contains tables dealing with conductors for general wiring. Select one: A. 100 B. 110 C. 310 D. 300arrow_forwardMessages AA Statement one Training will allow you to safely erect a mobile. tower scaffold on any ground surface condition. and access the tower both internal and externally Statement two In windy conditions placing sheeting around the mobile tower scaffold will protect the workers on the tower a) Statement two is incorrect b) Statement one and two are correct c) Statement one is correct and statement two is incorrect d) Both statements are incorrect actclass.co.uk 22 Questi 23 Questi 24 Questi 25 Questi 26 Questi Submit Answers Ćarrow_forward1. A14/2 type copper used for a general lighting branch circuit. Ampacity:______________ Maximum Fuse or Circuit Breakers Sizes:________________ 2.Three 8 AWG copper conductors with THHN insulation Installed in garage in electrical metallic tubing (EMT). The ambient temperature in the garage can reach as high as 110'F. All termination points for this circuit are rated 60'C. Ampacity:______________ Maximum Fuse or Circuit Breakers Sizes:________________ 3.Four 4 AWG copper conductor with THWN insulation imstalled in EMT in a basement. All termination points are rated at 60'C. Ampacity:______________ Maximum Fuse or Circuit Breakers Sizes:________________ 4. An 8/3 Type UF copper cable installed underground from a house to a detached garage to feed a 120/240-volt subpanel. All termination points are rated at 60'C.…arrow_forward
- 1.a. Section 300.15(C) requires a fitting to be installed on each end of a conduit or tubing being used toprovide support or protection to protect the cable fromA. hazardous vapors.B. direct sunlight.C. abrasion.D. extreme heat or cold.1.b. Typically, a/an _______ is a better electrode than a ground rod because it provides a greater surface areafrom which the electrons can be dissipated.A. continuous grounding conductorB. clamp-on ground resistance meterC. rebarD. OCPDarrow_forward1. 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_forwardA device used in kitchen serving hotels dining rooms club houses and restaurants is__________. a.) Grease basin b.) Yard basin c.) Garage basin d.) Oil catch basinarrow_forward
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