Solution Manual for Electrical Wiring Commercial, 18th
Edition by Phil Simmons
The Solution Manual for Electrical Wiring Commercial, 18th Edition by Phil Simmons is an essential companion
resource designed to support students, instructors, and professionals in mastering commercial electrical wiring
concepts. This manual provides clear, step-by-step solutions to all end-of-chapter problems, ensuring accurate
application of the National Electrical Code (NEC) standards. With detailed explanations, worked examples, and
practical problem-solving strategies, it reinforces understanding of complex wiring layouts, load calculations, and
safety requirements. The manual is structured to enhance learning efficiency, making it ideal for exam preparation,
classroom instruction, or self-study. By bridging theory with practice, it helps learners gain confidence in applying
electrical principles to real-world commercial projects. Comprehensive and reliable, this solution manual is a valuable
tool for advancing skills in electrical wiring.
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Solution and Answer Guide
CHAPTER 1: COMMERCIAL BUILDING PLANS AND SPECIFICATIONS
TABLE OF CONTENTS
Review .......................................................................................................................................................... 1
Note to instructor: It is recommended that students be required to respond, where appropriate, with
answers that are complete sentences.
REVIEW
Refer to the National Electrical Code or the working drawings when necessary. Where applicable,
responses should be written in complete sentences.
1. What section of a commercial building’s specification contains a list of contract documents?
Answer: A list of the contract documents is contained in General Clauses and Conditions. A
listing of the Commercial Building contract documents is presented in this chapter under the
heading ―Commercial Building Plans.‖ The instructor may wish to have the students check over
this listing and compare it with the plans provided.
2. The requirement for temporary light and power at the job site will be found in what portion of a
commercial building’s specification?
Answer: The Supplementary General Conditions specifies the job site requirements for
temporary light and power. In some contracts, this electrical system becomes the responsibility of
the general contractor; in other contracts, it is the electrical contractor’s responsibility to install
and maintain the temporary electrical system. The instructor may wish to refer the student to NEC
Article 590 and discuss the requirements in detail.
3. The electrician uses the Schedule of Working Drawings for what purpose? Answer: The
electrician uses the Schedule of Working Drawings to determine whether all of the drawings are
at hand. The information on ―the other sheets‖ may be very important, especially in coordinating
with other contractors.
4. Complete the following items by indicating the letter(s) designating the correct source(s) of
information:
No. Answer Item Information
4. Sections Ceiling height Sections, Sheet A6
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5. Electrical Electrical receptacle Electrical symbol schedule, Chapter 2,
symbol style Figure 2–6 schedule
6. Electrical Electrical outlet Electrical layout drawings, Sheets El,
layout location E2, and E3 drawings
7. Elevations Exterior wall finishes Elevations, Sheets A4 and A5
8. Site plan Grading elevations Site plan, Sheet A4
9. Electrical Panelboard schedules Electrical layout drawings, Sheet E4
layout drawings
10. Architectural Room width Architectural floor plan, Sheets Al, A2, floor plan
and A3
11. Architectural Swing of door Architectural floor plan, Sheets Al, A2, floor plan
and A3
12. Sections View of interior wall Sections, Sheet A6
Match the items on the left with those on the right by writing the letter designation of the
appropriate organization from the list on the right.
13. NEC Electrical Code National Electrical Code (NEC)
14. IAEI Electrical inspectors International Association of Electrical
Inspectors (IAEI)
15. NFPA Fire codes National Fire Protection Association
(NFPA)
16. IESNA Lighting information Illuminating Engineering Society of North America
(IESNA)
17. UL Listing service Underwriters Laboratories, Inc. (UL)
18. NEMA Manufacturers’ National Electrical Manufacturers standards
Association (NEMA)
19. PE Seal Professional Engineer (PE)
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Match the items on the left with those on the right by writing the letter designation of the proper
level of NEC interpretation from the list on the right.
20. with special Allowed by the Code Shall be permitted, or Shall not be
permission required, NEC
21. with special May be done Shall be permitted, or Shall not be permission
required, NEC
22. shall Must be done Shall, National Electrical Code
23. shall Required by the Code Shall, National Electrical Code
24. never Up to the electrician Shall be permitted, or Shall not be required, NEC
25. Find NEC 250.52(A)(5) and record the first four words.
Answer: The first four words of NEC 250.52(A)(5) are Rod and pipe electrodes.
Show required conversion calculations for problem 26 and problem 27.
26. Luminaire style F is four feet long. The length in SI units, as specified by the NEC, is
Answer: The length in SI units is 1.22 m; 4 ft × 0.3048 m/ft = 1.2192 m. As will be discussed
later, this luminaire is now called a 4 by 2 or the equivalent 1200 by 600 in metric terms. This
question assumes that the luminaire is exactly 4 ft long.
27. The gross area of the drugstore basement is 1395 square feet. The area in square meters
is
Answer: The area in SI units is 129.7 sq. m; 1395 sq. ft × 0.093 sq. m/sq. ft = 129.7 sq.
m.
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