ELECTRICAL WIRING:RESIDENTAL-6 PLANS
18th Edition
ISBN: 9781305098329
Author: MULLIN
Publisher: CENGAGE L
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Chapter 26, Problem 10R
To determine
Find the correct statement from the given two statements.
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An isolator is used to:
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Four electricians are discussing wiring under raised floors in information technology equipment rooms. Electrician A says that wiring under the raised floor requires fire-resistant walls, floors, and ceilings between other occupancies. Electrician B says that wiring under the raised floor requires fire resistant halfway up the walls and floors between other occupancies. Electrician C says that the room must employ a disconnecting means that removes half of the power to all equipment in the room. Electrician D says that a disconnecting means isn't necessary for the room. Which of the following statements is correct?
A. Electrician B is correct.
B. Electrician D is correct.
C. Electrician A is correct.
D. Electrician C is correct.
If a recessed luminary without an integral junction boxes installed what extra wiring must be provided
Chapter 26 Solutions
ELECTRICAL WIRING:RESIDENTAL-6 PLANS
Ch. 26 - In your own words, explain the terms alarm and...Ch. 26 - The requirements for household fire alarm systems...Ch. 26 - Do heat alarms and carbon monoxide alarms take the...Ch. 26 - Name two basic ways that smoke alarms are powered.Ch. 26 - Name the two types of smoke alarms.Ch. 26 - List the absolute minimum level of smoke alarm...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Prob. 10R
Ch. 26 - Prob. 11RCh. 26 - An important but often overlooked requirement in...Ch. 26 - Carbon monoxide is ____________, and is...Ch. 26 - Circle the correct answer from the following...Ch. 26 - The wiring of more complex household fire alarm...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Fire alarm cable generally used in more complex...Ch. 26 - When installing a fire alarm system or a complete...Ch. 26 - Residential sprinkler fire protection systems are...
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- Which of the following statements about equipment grounding conductors (EGCs) is true?A. The National Electrical Code permits the EGC to also perform as a grounding electrode conductor.B. More than one EGC must be used if multiple circuits are installed in a single raceway, cable, or cable tray.C. No current should be present in the EGC during normal operation.D. EGCs are required to be decreased in size to address voltage drop.arrow_forwardIf an electrical system operates at a potential higher than 600 volts, the nonmetallic conduit must be encased in at least_of concrete. A. 1 inch B. 2 inches C. 4 inches D. 6 inchesarrow_forward7. If a grounded surface metal box makes direct contact with the mounting strap for a switch or receptacle,then theA. bonding jumper can be undersized.B. neutral conductor will operate as the equipment grounding conductor.C. bonding jumper isn't required.D. device must be protected with a GFCI device.arrow_forward
- Part 2: Analysis and selection of the Wind Turbine. The team decides at install a 30 MW wind farm. The turbine that has been selected by the local contractor is an Enercon wind turbine. The specifications of all the available Enercon wind turbine is shown in the attached datasheet. 1. Decide on the required number of wind turbines needed. 2. In your own words, explain what the Betz limit for wind turbines means.arrow_forward13. How can a duplex receptacle be converted to a split-wired receptacle? O A. By running separate wires O B. By using the bypass terminals OC. By strapping it O D. By removing the contact link highlighted on the review page).arrow_forwardanswer number 4 only.arrow_forward
- QUESTION 5 A duplex receptacle is installed on a 4-inch square raised metal cover and mounted on a 4-inch square metal box.If the grounding terminal of the receptacle is connected to the grounded metal box, which of the following requirements would also apply to the installation of the duplex receptacle? a It must be secured by at least two screws. b The single 6/32 screw holding it in the cover must be tight. c It must be secured directly to the 4 inch square box. d It is not permitted to be installed in raised covers.arrow_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_forward20. Four electricians are discussing wiring under raised floors in information technology equipment rooms.Electrician A says that wiring under the raised floor requires fire-resistant walls, floors, and ceilings betweenother occupancies. Electrician B says that wiring under the raised floor requires fire resistant halfway up thewalls and floors between other occupancies. Electrician C says that the room must employ a disconnectingmeans that removes half of the power to all equipment in the room. Electrician D says that a disconnectingmeans isn't necessary for the room. Which of the following statements is correct?A. Electrician A is correct.B. Electrician D is correct.C. Electrician B is correct.D. Electrician C is correct.arrow_forward
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