Residential Construction Academy: House Wiring (MindTap Course List)
5th Edition
ISBN: 9781337402415
Author: Gregory W Fletcher
Publisher: Cengage Learning
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Textbook Question
Chapter 2, Problem 7RQ
Describe how an electrician can tell Type AC and Type MC cable apart. (Objective 2-5)
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1. A 150 X 90 X 12 mm angular
section is welded to a gusset
plate shown.
Area of angular section is 2376
sq.mm.
Fu = 550 MPa
Allowable shear Fv=0.30FU
Fy = 250 MPa
Allowable tensile stress Ft =
0.60FY
a. Determine the force P
b. Determine the total length of
weld using 12mm fillet weld
c. Determine the value of a
d. Determine the value of b
Chapter 2 Solutions
Residential Construction Academy: House Wiring (MindTap Course List)
Ch. 2 - Name the size of machine screw that is used to...Ch. 2 - Prob. 2RQCh. 2 - Describe when an electrician would use a new work...Ch. 2 - Name and describe three cable types that can be...Ch. 2 - Name the system that is used to size the...Ch. 2 - Prob. 6RQCh. 2 - Describe how an electrician can tell Type AC and...Ch. 2 - Prob. 8RQCh. 2 - Prob. 9RQCh. 2 - Prob. 10RQ
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- Although it is not a specific requirement, most electricians feel that the best place to start a cable run for a branch circuit is at the service panel or subpanel. Explain why this is so. (Objective 11-3)arrow_forwardName and describe three cable types that can be used in residential electrical installations. (Objective 2-5)arrow_forwardIf Type SER service entrance cable is used by an electrician to feed a subpanel from a main panel, the cable must be secured within _________of the panel enclosures and at Intervals not exceeding___________. Name the NEC section that states this requirement. (Objective 8-7)arrow_forward
- The minimum amount of free conductor required at an electrical box used in residential wiring for termination purposes is______________ inches. As long as the box has no dimension Larger than 8 Inches (200 mm), there must be at Least ______ inches of free conductor extending out from the box opening. Name the NEC section that covers this wiring practice. (Objective 9-3)arrow_forwardThe most often used category-rated UTP cable for voice and data wiring from various outlets back to the service center or other distribution device in a residential application is______. (Objective 16-3)arrow_forwardDescribe the purpose of an LB conduit body used in a residential service entrance Installation that uses electrical conduit. (Objective 8-1)arrow_forward
- Name the ampacity for the following copper conductors according to Table 310.15(B) (16): (Objective 6-4) a. 10 AWG THW amps _____ amps b. 8 AWG THWN amps_______ amps c. 1 AWG THHN amps ______ amps d. 4/0 TW amps ______ ampsarrow_forwardExplain the difference between new-work and old-work electrical boxes. (Objective 10-1)arrow_forwardDescribe how a white Insulated conductor in a cable assembly is reidentified as an ungrounded hot conductor. Name the NEC section that covers this wiring situation. (Objective 9-4)arrow_forward
- Calculate the minimum copper conductor size needed for a 120/240-volt electric range branch circuit. The electric range has a nameplate rating of 12 kW. Show all work. (Objective 6-2)arrow_forwardDescribe when an electrician would use a new work box and an old work box. (Objective 2-3)arrow_forwardSmall-appliance branch circuits and laundry branch circuits installed in a dwelling must have a rating of at least__________ amperes. This information is found in NEC Section __________. (Objective 6-2)arrow_forward
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