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Solution and Answer Guide Electrical Wiring Commercial 18th Edition by Phil Simmons, Ray C. Mullin, Mark Ode
Solution and Answer Guide Electrical Wiring Commercial 18th Edition by Phil Simmons, Ray C. Mullin, Mark Ode
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Solution and AnswerGuide r r rSIMMONS/ODE, ELECTRICAL WIRING COMMERCIAL, 18E R R © 2024, 9780357767115; R CHAPTER
1:COMMERCIAL BUILDING PLANS AND SPECIFICATIONS
R R R R R
TABLE OF CONTENTS R R
Review ....................................................................................................... 1
Note to instructor: It is recommended that students be required
r r r r r r r r r r to r respond, r where
appropriate, with answers that are complete sentences.
r r r r r r r
REVIEW
Refer to the National Electrical Code or the working drawings when necessary.
r r r r r r r r r r r
rWhere applicable, responses should be written in complete sentences.
r r r r r r r r
1. What section of a commercialr r r r r building’s r specification r contains r a
list of contractdocuments?
r r r
Answer: A list of the contract documents is contained in General Clauses
r r r r r r r r r r r
and Conditions. A listing of the Commercial Building contract documents
r r r r r r r r r r
is presented in this chapter under the heading “Commercial Building
r r r r r r r r r r
Plans.” The instructor may wishto have the students check over this listing
r r r r r r r r r r r r
and compare it with the plans provided.
r r r r r r r
2. The requirement for temporary light and power at the job site
r r r r r r r r r r r will
be found in whatportion of a commercial building’s specification?
r r r r r r r r r
Answer: The Supplementary General Conditions specifies the job site
r r r r r r r r
requirements fortemporary light and power. In some contracts, this
r r r r r r r r r
electrical system becomes the responsibility of the general contractor;
r r r r r r r r r
in other contracts, it is the electrical contractor’s responsibility to
r r r r r r r r r r
install and maintain the temporary electrical system. Theinstructor may
r r r r r r r r r
wish to refer the student to NEC Article 590 and discuss the
r r r r r r r r r r r r
requirements in detail.
r r r
,3. The r r electrician r r uses r r the r r Schedule r r of r r Working r r Drawings r for r r what r r purpose?
Answer: The electrician uses the Schedule of Working Drawings to determine
r r r r r r r r r r
whetherall of the drawings are at hand. The information on “the
r r r r r r r r r r r
other sheets” may be very important, especially in coordinating with
r r r r r r r r r r
other contractors.
r r
4. Complete the following items by indicating the
r r r r r r r letter(s) designating r
the correctsource(s) of information:
r r r r
No. Answer Item Information
4. Sections Ceiling height r Sections, r r Sheet r r A6
5. Electrical Electrical Electrical symbol schedule, Chapter 2, r r r r
rsymbol receptacle
r Figure 2–6
r r
rschedule style
r
6. Electrical Electrical outlet r Electrical layout drawings, Sheets r r r
rlayout rlocation El,E2, and E3
r r r
rdrawing
r s
7. Elevations Exterior r wall finishes r Elevations, r r Sheets r r A4 r r and r r A5
8. Site plan r Grading r elevations Site plan, r r Sheet r A4
9. Electrical Panelboard schedules Electrical r layout r r drawings, r Sheet r E4
rlayout
rdrawing
r s
10. Architectural Room width r Architectural floor plan, Sheets r r r
floor plan
r r Al, A2,and A3
r r r
11. Architectural Swing r r of r r door Architectural r r floor r r plan, r r Sheets r r Al, r r A2,
floor plan
r r and A3 r
12. Sections View of interior wall
r r r Sections, r Sheet r A6
r Match r the r items r on r the r left r with r those r on r the r right r by r writing
r the letter
r
designation r ofthe r appropriate r organization r from r the r list r on r the r right.
13. NEC Electrical r Code National r r Electrical Code
(NEC)
14. IAEI Electrical r r inspectors International Association of r r
ElectricalInspectors (IAEI)
r r
, 15. NFPA Fire codes r National Fire r r Protection r r Association
(NFPA)
16. IESNA Lighting r information Illuminating Engineering r r r Society r r of
North America (IESNA) r r r r
17. UL Listing r r service Underwriters r r Laboratories, r r Inc. r r (UL)
18. NEMA Manufacturers’ National Electrical r
standards ManufacturersAssociation (NEMA)
r r
19. PE Seal Professional r r Engineer r r (PE)
Match the items on the left with those on the right by writing the
r r r r r r r r r r r r r
letter designation ofthe proper level of NEC interpretation from the list
r r r r r r r r r r r r on
the right.
r r
20. with special r Allowed r by the Code r r Shall be permitted, r r r or Shall not r r r be
permission
r required, NEC r
21. with special r May be done r r Shall be permitted, or Shall r r r r
permission
r not berequired, NEC
r r r
22. shall Must r r be r r done Shall, r r National Electrical r r Code
23. shall Required r r by r r the Code Shall, r r National Electrical r r Code
24. never Up to the electrician
r r r Shall be permitted, r r r or Shall not be
r r r
required, NEC r
25. Find r NEC r r 250.52(A)(5) r r and r record r the r first r r four r r words.
Answer: The first four words of NEC 250.52(A)(5) are Rod and pipe electrodes.
r r r r r r r r r r r r
Show r required r r conversion r r calculations r r for r r problem r r 26 r r and r r problem r r 27.
26. Luminaire style r r F r is four feet long.
r r r r The r length r in r SI units, as r r r specified by r r the
r NEC, is r
Answer: The length in SI units is 1.22 m; 4 ft × 0.3048 m/ft =
r r r r r r r r r r r r r r
1.2192 m. As will be discussed later, this luminaire is now called a
r r r r r r r r r r r r r r 4
by 2 or the equivalent 1200 by 600 inmetric terms. This question
r r r r r r r r r r r r
assumes that the luminaire is exactly
r r r r r r
4 ft long. r r
27. The gross area of the drugstore
r r r r r r basement r is r 1395 r square
feet. The area in squaremeters is
r r r r r r
Answer: The r r area in r r SI units is r r r 129.7 sq. r r m; 1395 r r sq. ft × 0.093 r r r r sq. m/sq. ft = r r r
129.7 sq.m. r
, To answer Questions 28–31, refer to the Plans included with this book.
r r r r r r r r r r r
r Determine the Following dimensions. Write the dimensions using unit names, not symbols
r r r r r r r r r r r
r(for example, 1 foot, not 1’), and indicate the source of the information.
r r r r r r r r r r r r
28. What is the r r r inside r clear r distance r of the r r interior r stairway r to r the r drugstore
basement? r
Answer: The inside clear distance of the interior stairway to the
r r r r r r r r r r
Drugstore basement is4 ft 0 in. (1.22 m), as scaled from Sheet A2.
r r r r r r r r r r r r r
29. What r is r the r gross r square r footage r of r each floor r r of r the r building?
Answer: The gross area of each floor of the building r r r r r r r r r r is 60 ft × 43 ft r r r r r
= 2580 sq. ft (18.82m × 13.1 m = 246.5 sq. m), as
r r r r r r r r r r r r r r taken from Sheets r r
Al, A2, and A3.
r r r r
30. What is the distance in the drugstore from the exterior block
r r r r r r r r r r r wall
to the block wallseparating the drugstore from the bakery?
r r r r r r r r r
Answer: The distance from the exterior block wall in the Drugstore to the block
r r r r r r r r r r r r r
wall separating the Drugstore from the Bakery is 21 ft 7 in. (6.58 m), as shown
r r r r r r r r r r r r r r r r
on Sheet A2.
r r r
31. What is r r the r finished r floor r to r finished r ceiling r height r on the r r second r floor?
Answer: The finished floor to finished ceiling height on the second floor is 8 ft 6 in.
r r r r r r r r r r r r r r r r
(2.59 m), as available from East and West Elevations A41–2, and Sheet A6, Cross
r r r r r r r r r r r r r r
rSections A–A and B–B. r r r
For problems 32–34, cite the NEC source. We will show the method
r r r
of using the NECIndex for the first two questions in Chapter 1 and will provide this
r r r r r r r r r r r r r r
same method of locating requirements in other chapters of this book.
r r r r r r r r r r r
32. The r r standard r r ampere r r ratings r r for r r fuses r r and r r fixed r r trip r r circuit r r breakers.
Answer: The standard r r r r r ampere r rating r for r fuses r r and r fixed r trip r circuit
breakers is given in
r r r r
NEC Table 240.6(A). r r
To find this information in the Index of the NEC, locate “Circuit breakers,
r r r r r r r r r r r r
Article 240, andlocate Rating and under that locate Fixed-Trip circuit
r r r r r r r r r r
breakers, 240.6(A)…”
r r
This
will provide the Section number for the ratings.
r r r r r r r
33. The minimum bending radius for metal-clad cable with a smooth
sheath with anexternal diameter of 1 in.
r r r r r r r
Answer: The minimum bending radius r for metal clad cable with a
r r r smooth
sheath withan external
r r r r diameter of 1 r r r in. (size 1) is given in NEC
r r r r r r
330.24(A)(2) as
r r
12 times the diameter. r r r
To find this information in the Index of the NEC,
r r r r r r r r r r r r r locate r “Metal-clad r Cable, r r Article r
330, andunder that locate “Bends, 330.24.” 330.24(A)(2).
r r r r r r r
34. The r r permission r r to r r use r r splices r r in r r busbars r r as r r grounding r r electrode r r conductors.
Answer: The permission to use splices in busbars r r r r r r r r as r a r grounding
electrode conductoris given in NEC 250.64(C)(2).
r r r r r r
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