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.
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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
5. Electrical Electrical Electrical symbol
symbol receptacle style schedule, Chapter 2,
schedule Figure 2–6
6. Electrical layout Electrical outlet Electrical layout drawings,
drawings location Sheets El, E2, and E3
7. Elevations Exterior wall finishes Elevations, Sheets A4 and
A5
8. Site plan Grading elevations Site plan, Sheet A4
10. Architectural floor Room width Architectural floor plan,
plan Sheets Al, A2, and A3
11. Architectural floor Swing of door Architectural floor plan,
Plan Sheets Al, A2, 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.
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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
Standards Manufacturers Association
(NEMA)
19. PE Seal Professional Engineer (PE)
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
Permission not be required, NEC
21. with special May be done Shall be permitted, or Shall
Permission not be 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
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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.
To answer Questions 28–31, refer to the Plans included with this book. Determine the Following
dimensions. Write the dimensions using unit names, not symbols (for example, 1 foot, not 1’),
and indicate the source of the information.
28. What is the inside clear distance of the interior stairway to the drugstore basement?
Answer: The inside clear distance of the interior stairway to the Drugstore basement is 4 ft 0 in.
(1.22 m), as scaled from Sheet A2.
29. What is the gross square footage of each floor of the building?
Answer: The gross area of each floor of the building is 60 ft × 43 ft = 2580 sq. ft (18.82 m ×
13.1 m = 246.5 sq. m), as taken from Sheets Al, A2, and A3.
30. What is the distance in the drugstore from the exterior block wall to the block wall separating
the drugstore from the bakery?
Answer: The distance from the exterior block wall in the Drugstore to the block wall separating
the Drugstore from the Bakery is 21 ft 7 in. (6.58 m), as shown on Sheet A2.
31. What is the finished floor to finished ceiling height on the second floor?
Answer: The finished floor to finished ceiling height on the second floor is 8 ft 6 in. (2.59 m), as
available from East and West Elevations A41–2, and Sheet A6, Cross Sections A–A and B–B.
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