EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 20.2, Problem 10R
a.
To determine
Mention the maximum demand of a free-standing electric range.
b.
To determine
Mention the minimum size of the ungrounded copper conductors.
c.
To determine
Mention the minimum size of the neutral copper conductors.
d.
To determine
Mention the rating of overcurrent protection device for branch-circuit.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Assume a bank of heating strips is rated at 22 KW and is connected to 240 volts. The heat strips operate for 4 hours at a time and are located in an area with an ambient temperature of 86 degrees F. The termination temperature rating of the heat disconnect lugs are unknown. Copper conductors with type THWN-2 insulation are to be used because of the environment of the installation to connect the heaters. What size conductors should be used?
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)
What is the 277-volt–single-phase–60-hertz system used for?
Select one:
A. RECEPTACLE BRANCH CIRCUITS
B. LIGHTING BRANCH CIRCUITS
C. MOTOR BRANCH CIRCUITS
D. RESIDENTIAL BRANCH CIRCUITS
Chapter 20 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Knowledge Booster
Learn more about
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
- An electric dryer is rated at 7.5 kW and 120/240 volts, 3-wire, single-phase. The terminals on the dryer and panelboard are marked 75C. a. What is the wattage rating? ___________ b. What is the current rating? ___________ c. What minimum size type THHN copper conductors are required? ___________ d. If EMT is used, what minimum size is required? ___________arrow_forwardRefer 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?arrow_forwardA mobile home served with 120/240 volt 3 wire service that has a calculated load greater than 50 ampere is required to be supplied power using a permanent wire method from the adjacent power supply pole to the mobile home. The power supply feeder is required to consist of?arrow_forward
- a. What is the minimum power demand allowed by the Code for an electric dryer if no actual rating is available for the purpose of calculating feeder and service-entrance conductor sizing? ______________ b. What is the current draw? _____________________arrow_forwardA certain type of control connects electric heating units to a 120-volt supply or a 240-volt supply, depending on the amount of the temperature drop in a room. These controls are supplied from a 120/240-volt, 3-wire, single-phase source. Assuming that this type of device controls a 240-volt, 2000-watt heating unit, what is the wattage produced when the control supplies 120 volts to the heating unit? Show all calculations. ______________________________________________________________________ ______________________________________________________________________arrow_forwardWhen installing ceiling-suspended (paddle) fans, per the requirements found in NEC 314.27(C) and NEC 422.18 and the UL Product Spec database, the outlet box or outlet system consist of the following:arrow_forward
- Refer to the National Electrical Code or the working drawings when necessary. Whereapplicable, responses should be written in complete sentences.A 300-kilovolt-ampere transformer bank consisting of three 100-kilovolt-amperetransformers has a 3-phase, 480-volt delta primary and a 120/240-volt, 3-phase, 4-wiredelta-connected secondary.For problems 1 through 4 show calculations and/or source of information. 1. What is the proper rating of the fuses to install for overcurrent protection of thesecondary?2. What is the kilovolt-ampere of the bank if one of the transformers is removed?arrow_forwardRefer to the National Electrical Code or the working drawings when necessary. Whereapplicable, responses should be written in complete sentences.A 300-kilovolt-ampere transformer bank consisting of three 100-kilovolt-amperetransformers has a 3-phase, 480-volt delta primary and a 120/240-volt, 3-phase, 4-wiredelta-connected secondary.For problems 1 through 4 show calculations and/or source of information 1. What is the full-load current in the primary? 2. What is the full-load current in the secondary?arrow_forwardHow many lighting branch circuits are provided in this dwelling? __________ a. What is the minimum load allowance for small-appliance circuits for dwellings? See NEC 220.52(A). __________ b. An individual 15-ampere branch circuit is run to the receptacle outlet behind the refrigerator instead of connecting it to one of the two 20-ampere small-appliance branch circuits that are required in kitchens. For this separate circuit, an additional 1500 volt-amperes (shall) (does not have to) be added to the load calculations for dwellings. (Circle the correct answer.)arrow_forward
- What are the minimum allowable ampacities of the phase conductors and the neutral conductor that are to supply a 2-phase, 3-wire, 230-volt, 30-horsepower motorarrow_forward10.a. Which of the following is a condition of the exception that allows the grounded conductor of feeders tobe used for grounding at separate buildings or structures?A. There are common electrically continuous metallic paths between the feeder source and the destination at the structure served.B. There are common electrically continuous nonmetallic paths between the equipment grounding conductor and the destinationat the structure served.C. An equipment grounding conductor isn't included with the supply circuit to the separate structure.D. Ground-fault protection of equipment is provided on the supply side of the feeder.10.b. A service disconnection means must be installed adjacent to, within sight of, and no more than_______ feet from a mobile home.A. 20B. 30C. 10D. 50arrow_forwardDetermine the proper size of copper wire conductor necessary to apply a 750 W electric motor that is located 100 feet from the panel board. The voltage at the panelboard is 120 volts. The permissible line drop is 1.2 volts. (for your final answer: no decimal places and unit to have one common answer)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- EBK ELECTRICAL WIRING RESIDENTIALElectrical EngineeringISBN:9781337516549Author:SimmonsPublisher:CENGAGE LEARNING - CONSIGNMENT
EBK ELECTRICAL WIRING RESIDENTIAL
Electrical Engineering
ISBN:9781337516549
Author:Simmons
Publisher:CENGAGE LEARNING - CONSIGNMENT
How Electric Motors Work - 3 phase AC induction motors ac motor; Author: The Engineering Mindset;https://www.youtube.com/watch?v=59HBoIXzX_c;License: Standard Youtube License