EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Textbook Question
Chapter 19.1, Problem 12R
How many amperes does a 1-horsepower, 240-volt, single-phase motor draw? (See Table 430.248.) _________________
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Per NEC 590.6(A)(3), All 125-volt and 125/250-volt, single-phase, 15-, 20-, and 30-ampere
receptacle outlets that are a part of a 15-kW or smaller portable generator shall have listed ground-fault circuit-interrupter protection for personnel.
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Chapter 42. Electronic Signal and Security System
4.How are occupants alerted to the presence of carbon monoxide and natural and propane gas?
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 size, overload protection, and inverse-time circuitbreaker rating for a circuit supplying a 230-volt, 3-phase, code A, 40°C, 75-horsepower synchronous motor operating at an 80% power factor with a nameplate full-load current of 185 amperes?
Chapter 19 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 19.1 - Does a jet pump have any electrical moving parts...Ch. 19.1 - Prob. 2RCh. 19.1 - Where is the jet of the pump located?...Ch. 19.1 - Prob. 4RCh. 19.1 - Prob. 5RCh. 19.1 - Prob. 6RCh. 19.1 - Prob. 7RCh. 19.1 - What is compressed in the water storage tank?...Ch. 19.1 - Explain the difference between a 2-wire...Ch. 19.1 - Prob. 10R
Ch. 19.1 - Why is a 240-volt motor preferable to a 120-volt...Ch. 19.1 - How many amperes does a 1-horsepower, 240-volt,...Ch. 19.1 - What size are the conductors used for this branch...Ch. 19.1 - Prob. 14RCh. 19.1 - What provides the running overload protection for...Ch. 19.1 - What is the maximum ampere setting permitted for...Ch. 19.1 - Prob. 17RCh. 19.1 - Because the controller contains the motor starting...Ch. 19.1 - Prob. 19RCh. 19.1 - Proper pressure of the submersible pump system is...Ch. 19.1 - Fill in the data for a 16-ampere electric motor,...Ch. 19.1 - The NEC is very specific in its requirement that...Ch. 19.1 - Does the NEC allow submersible pump cable to be...Ch. 19.1 - Must the disconnect switch for a submersible pump...Ch. 19.1 - A metal well casing (shall) (shall not) be bonded...Ch. 19.2 - Prob. 1RCh. 19.2 - A major hazard involved with water heaters is that...Ch. 19.2 - Prob. 3RCh. 19.2 - The heating elements in electric water heaters are...Ch. 19.2 - An 80-gallon electric water heater is energized...Ch. 19.2 - Prob. 6RCh. 19.2 - For residential water heaters, the Consumer...Ch. 19.2 - An 80-gallon electric water heater has 60F...Ch. 19.2 - Approximately how long would it take to produce...Ch. 19.2 - Two thermostats are generally used in an electric...Ch. 19.2 - a. How many heating elements are provided in the...Ch. 19.2 - When does the lower heating element operate?...Ch. 19.2 - Prob. 14RCh. 19.2 - Prob. 15RCh. 19.2 - Prob. 16RCh. 19.2 - a. If both elements of the water heater in this...Ch. 19.2 - a. How much power in watts would the two elements...Ch. 19.2 - A condominium owner complains of not getting...Ch. 19.2 - For a single, nonmotor-operated electrical...Ch. 19.2 - A 7000-watt resistance-type heating appliance is...Ch. 19.2 - Prob. 22R
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NEC 590.6(A)(3) requires that all 125-volt and 125/250-volt, single-phase, 15-, 20-, and 30-ampere receptacle outlets used on a construction site that are a part of a portable generator have listed: (Circle the correct answer.) a. ground-fault circuit interrupter protection for personnel. b. grounding-type receptacles. c. twist-lock receptacles.
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Does the NEC allow metal raceways to be used with nonmetallic boxes? Yes __________ No __________, NEC __________
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When used as service equipment, a panelboard (load center) must be ______________________ that is suitable for use as service equipment, 230.66. If the panelboard (load center) contains the main service disconnect, it must be clearly marked ____________________________________, 230.70(B).
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Which section of the Code prohibits telephone cables from being installed in the same box or enclosure or from being pulled into the same raceway as light and power circuits? _____
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a. Is it permissible to install low-voltage Class 2 systems in the same raceway or enclosure with light and proper wiring? ______ b. Which Code section covers this? ______
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How many circuit wires enter the entry ceiling box? How many equipment grounding conductors enter the entry ceiling box?
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Refer to the specifications in the back of this text following Chapter 33. a. What electrical codes must be conformed to? ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ b. What is the wiring method to be used in the workshop? ________________________________________________________________________ c. What size conductors are to be used for the lighting branch circuits? ______________________ AWG the small-appliance branch circuits? ______________________ AWG d. What section of the specifications tells us the size of the service entrance to be installed for this residence?
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A residential air-conditioning unit is installed in the attic. a. Is a lighting outlet required? __________ b. What Code section applies? __________ c. If a lighting outlet is required, how shall it be controlled? __________ d. What Code section applies? __________ e. Is a receptacle outlet required? __________ f. What Code section applies? __________
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NOTES:
-Pls Do It By Using Computer Line,
-(Minimum 350 words.) Reference must be mentioned at the end of the report.
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List the minimum service drop clearances required by the NEC in the following residential situations.
A driveway _____feet?
A lawn ____feet?
A roof with a slope of 5/12 ____feet?
A garage roof with a slope of 3/12 _____feet?
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What section of the Code prohibits supporting fire alarm conductors from raceways that contain light or power conductors? NEC ______.
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Airframe Electrical System
Question: What is the maximum acceptable voltage drop from the voltage source to the utilization equipment's ground in a 28 volt system?
(Source: FAA AC 43.13-1B/2B)
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