Electrical Wiring Residential
19th Edition
ISBN: 9781337101837
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Chapter 18, Problem 25R
To determine
Explain whether the NEC code permits to fasten the raised cover to the receptacles.
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ladder diagram for bottom half of a switched receptacle is to always be hot plus a duplex receptacle that is controlled from two locations using a coast 3-way wiring system multiwire circuit
QUESTION 25
Type TC cable shall not be _____.
a.
installed where it will be exposed to physical damage
b.
all of these
c.
installed outside of a race-way or cable tray system, unless permitted in 336.10(4), 336.10(7), 336.10(9), and 336.10(10)
d.
used where exposed to direct rays of the sun, unless identified as sunlight resistant
electrical wiring 20th edition residential book
chapter 12 review question #27
The following is a layout for the lighting circuit for the Kitchen. Complete the wiring diagram using colored pens or pencils to show the conductors’ insulation color.
Chapter 18 Solutions
Electrical Wiring Residential
Ch. 18 - a. What circuit supplies the workshop lighting?...Ch. 18 - Prob. 2RCh. 18 - a. How is EMT fastened to masonry? _______________...Ch. 18 - What type of luminaires are installed on the...Ch. 18 - Prob. 5RCh. 18 - To what circuit are the smoke detectors connected?...Ch. 18 - Is it a Code requirement to connect smoke...Ch. 18 - Prob. 8RCh. 18 - Prob. 9RCh. 18 - Prob. 10R
Ch. 18 - Adjustment factors for conductor ampacities must...Ch. 18 - Prob. 12RCh. 18 - Prob. 13RCh. 18 - Calculate the total current draw of Circuit A17 if...Ch. 18 - Prob. 15RCh. 18 - A conduit body may contain splices if marked with...Ch. 18 - What size box would you use where Circuit A17...Ch. 18 - List the proper trade size of electrical metallic...Ch. 18 - According to the Code, what trade size EMT is...Ch. 18 - a. When more than three current-carrying...Ch. 18 - Prob. 21RCh. 18 - For laundry equipment in basements, what sort of...Ch. 18 - Prob. 23RCh. 18 - A Type NM cable carries a branch circuit to the...Ch. 18 - Prob. 25RCh. 18 - The following is a layout of the lighting circuits...Ch. 18 - Prob. 27RCh. 18 - Prob. 28R
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- A metal well casing (shall) (shall not) be bonded to the pumps equipment grounding conductor or by grounding it with a separate equipment grounding conductor run all the way back to the same ground bus in the panelboard that supplies the pump circuit, NEC ______________________________________________________________________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_forwardThe recessed fluorescent luminaires installed in the ceiling of the recreation room of this residence are connected with trade size flexible metal conduit. These flexible connections are commonly referred to as fixture whips. Does the flexible metal conduit provide adequate grounding for the luminaires, or must a separate equipment grounding conductor be installed? ________________arrow_forward
- What section of the NEC covers grounding?arrow_forwardThe following is a layout of the lighting circuit for the Laundry, Powder Room, Rear Entry Hall, and Attic. Complete the wiring diagram using colored pens or pencils to indicate conductor insulation color. The GFCI receptacle in the Powder Room is not shown in the diagram because it is connected to a separate circuit, B21.arrow_forwardIf you use 600-volt rated conductors for Class 2 wiring, does the Code permit pulling these conductors through the same raceway as the power conductors? (Yes) (No) (Circle the correct answer.) Give the NEC section number. ____________arrow_forward
- In order to wire a post light, a homeowner purchased some single-conductor cable that was marked as suitable for direct burial in the ground. A separate equipment grounding conductor to the post light was not carried. Instead, the bottom of the metal post, buried 2 ft (0.6 m) into the ground, was used as a ground for the post light. The inspector red tagged (turned down) the installation. Who is rightthe homeowner or the electrical inspector? Explain. ___________________ ___________________ ___________________arrow_forwardAssuming that an outlet box for the entry ceiling has a fixture stud but has external cable clamps, what size box could be installed? Show calculations for both metal and nonmetallic boxes. ___________arrow_forwardThe NEC is the only code reference used for electrical installations of all types of occupancies including dwelling for physically challenged persons. True or False?arrow_forward
- In order to wire a post light, a homeowner purchased some single-conductor cable that was marked as suitable for direct burial in the ground. A separate equipment grounding conductor to the post light was not carried. Instead, the bottom of the metal post, buried 2 ft (0.6 m) into the ground, was used as a ground for the post light. The inspector “red tagged” (turned down) the installation. Who is right—the homeowner or the electrical inspector? Explain.arrow_forwardelectrical wiring 20th edition residential chapter 11 review question #10 The following layout is for Lighting Circuit A15, the entry, porch, post light, and front garage lights. Using the cable layout shown in Figure 11-1, make a complete wiring diagram of this circuit. Use colored pencils to indicate the color of the conductors’ insulation.arrow_forwarda. The service head must be located (above) (below) the point where the service-drop conductors are spliced to the service-entrance conductors. (Circle the correct answer.) b. What Code section provides the answer to part (a)? ___________________arrow_forward
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