Solution Manual for Electrical Wiring Commercial, 18th
Edition by Phil Simmons
All Chapters Covered 1-21| Verified Questions & accurate Solutions
for Exam Preparations| A+ GRADED
1|Page
,Solution Manual for Electrical Wiring Commercial, 18th
Edition by Phil Simmons
,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
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)
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.
,ToE answerE QuestionsE 28–
31,E referE toE theE PlansE includedE withE thisE book.E DetermineE theEFollowingE dimensions.E WriteE
theE dimensionsE usingEunitEnames,E notEsymbolsE(forEexample,E 1Efoot,EnotE1’),EandEindicateEtheEso
urceEofEtheEinformation.
28. WhatEisEtheEinsideEclearEdistanceEofEtheEinteriorEstairwayEtoEtheEdrugstoreEbasement?
Answer:ETheEinsideEclearEdistanceEofEtheEinteriorEstairwayEtoEtheEDrugstoreEbasementEisE
4EEftE0Ein.E(1.22Em),EasEscaledEfromESheetEA2.
29. WhatEisEtheEgrossEsquareEfootageEofEeachEfloorEofEtheEbuilding?
Answer:E TheE grossE areaE ofE eachEfloorE ofE theE buildingE isE 60EftE ×E43EftE=E 2580E sq.EftE (18.8
2EmE×E13.1EmE=E246.5Esq.Em),EasEtakenEfromESheetsEAl,EA2,EandEA3.
30. WhatEisEtheEdistanceEinEtheEdrugstoreEfromEtheEexteriorEblockEwallEtoEtheEblockEwal
lEseparatingEtheEdrugstoreEfromEtheEbakery?
Answer:ETheEdistanceEfromEtheEexteriorEblockEwallEinEtheEDrugstoreEtoEtheEblockEwallEseparating
EtheE DrugstoreEfrom EtheEBakeryEisE 21EftE7 Ein.E(6.58Em),EasEshownEonE Sheet E A2.
31. WhatE isE theE finishedE floorE toE finishedE ceilingE heightE onE theE secondE floor?
Answer:ETheEfinishedEfloorEtoEfinishedEceilingEheightEonEtheEsecondEfloorEisE8EftE6Ein.E(2
.59Em),EasEavailableEfromEEastEandEWestEElevationsEA41–
2,EandESheetEA6,ECrossESectionsEA–AEandEB–B.
ForE problemsE 32–
34,E citeE theE NECE source.E WeE willE showE theE methodE ofE usingE theE NECEIndexE forE theE firstE t
woE questionsE inE ChapterE 1E andE willE provideE thisE sameE methodE ofElocatingE requirementsEi
nE otherEchaptersEofE thisE book.
32. TheE standardE ampereE ratingsE forE fusesE andE fixedE tripE circuitE breakers.
Answer:E TheE standardE ampereE ratingE forE fusesE andE fixedE tripE circuitE breakersE isE givenE in
NECE TableE 240.6(A).
ToEfindEthisEinformationEinEtheEIndexEofEtheENEC,ElocateE―CircuitEbreakers,EArticleE240,EandElo
cateE RatingE andE underE thatE locateE Fixed-
TripE circuitE breakers,E 240.6(A)…‖E ThisE willEprovideEtheESectionEnumberEforEtheEratings.
33. TheE minimumE bendingE radiusE forE metal-
cladE cableE withE aE smoothE sheathE withE anEexternalEdiameterEofE1Ein.
Answer:E TheE minimumE bendingE radiusE forE metalE cladE cableE withE aE smoothE sheathE withE
anEexternalEdiameterEofE1Ein.E(sizeE1)EisEgivenEinENECE330.24(A)(2)EasE12EtimesEtheEdiameter.
ToEfindEthisEinformationEinEtheEIndexEofE theE NEC,E locateE―Metal-cladE Cable,E ArticleE 330,E and
underE thatElocateE ―Bends,E 330.24.‖E 330.24(A)(2).
34. TheEpermissionEtoEuseEsplicesEinEbusbarsEasEgroundingEelectrodeEconductors.
,Answer:ETheEpermissionEtoEuseEsplicesEinEbusbarsEasEaEgroundingEelectrodeEconductorEis
EgivenEinE NECE 250.64(C)(2).
,35. a)E WhereEisEtheEsumpEpumpEinEtheECommercialEBuildingElocated?E
b) ToEwhatEbranchEcircuitEisEtheEsumpE pumpEconnected?E
Answer:
a. TheE sumpE pumpE isE locatedE inE theE Owner’sE spaceE inE theE floorE ofE theE basement.
b. TheE sumpE pumpE isE connectedE toE circuitE 11E inE theE Owner’sE panelboard.
36. WriteEaEletterEtoEoneEofEtheEorganizationsElistedEinEthisEunitErequestingEinformatio
nEaboutEtheEorganizationEandEtheEservicesEitEprovides.
Answer:E WriteE aE letterE toE oneE ofE theE organizationsE listedE inE ChapterE 1,E requestingEinformat
ionEaboutEtheEorganizationEandEtheEservicesEitEprovides.
ItEisEsuggestedEthatEtheEinstructorEassignEeachEstudentEanEorganizationEtoEcontactEtoEprovi
deEtheEclassEwithEinformationEaboutEseveralEorganizations.EStudentsEshouldEbeEencourag
edEtoEinvestigateEtheEproperEformEofEaEbusinessEletter.ETheyEshouldEbeEalertedEthatEaEpoorl
yEwrittenEletterEisEunlikelyEtoEgetEaEresponse.EIfEpossible,EtheEletterEshouldEbeEonEbusiness
EletterheadE stationery.E OneE alternativeEisEfor EtheEstudentsEtoEmakeE arrangements E withE em
ployersEtoEsendEtheElettersEonEcompanyEstationery.
37. TheE temperaturesE fromE anE arcE flashE canE reachE approximatelyE °F.
Answer:E TheE temperaturesE fromE anE arcE flashE canE reachE approximatelyE 35,000°F.
38. TheEOccupationalESafetyEandEHealthEActE(OSHA) ECodeEofEFederalERegulationsE(
CFR)ENumberE29,ESubpartES,EinEparagraphE
discussesEtheEtraining
E neededEforEthoseEwhoEfaceEtheEriskEofEelectricalEinjury.
Answer:ETheEOccupationalESafetyEandEHealthEActE(OSHA)ECodeEofEFederalERegul
ationsE(CFR)ENumberE29,ESubpartES,EinEparagraphE1910.332,EdiscussesEtheEtrainingEn
eededEforEthoseEwhoEfaceEtheEriskEofEelectricalEinjury.
39. TheENECEdefinesEaEqualifiedEpersonEasE
Answer:ETheENECEdefinesEaEQualifiedEPersonEasEOneEwhoEhasEskillsEandEknowledgeErel
atedEtoEtheEconstructionEandEoperationEofEtheEelectricalEequipmentEandEinstallationsEandEh
asEreceivedEsafetyEtrainingEtoErecognizeEandEavoidEtheEhazardsEinvolved,EArticleE100.*
40. AccordingEtoENFPAE70EEArticleE110,EanEelectricianEisEqualifiedEtoEdoEanyEandEallEelectrica
lEwiringEtasks.ETrueE FalseE
Answer:EAccordingEtoENFPAE70EEArticleE110,EanEelectricianEisEqualifiedEtoEdoEanyEandEallEel
ectricalEwiringEtasks.EFalse.
41. LiveEpartsEtoEwhichEanEemployeeE mayEbeEexposedEareErequiredEtoEbeEde-
energizedE beforeEtheEemployeeEworksEonEorEnearEthemEunlessE .
Answer:ELiveEpartsEtoEwhichEanEemployeeEmayEbeEexposedEareErequiredEtoEbeEde-
, energizedEbeforeEtheEemployeeEworksEonEorEnearEthem,EunlessEtheEemployerEcanEdemonst
rateEthatEde-energizingEintroducesEadditionalEorEincreasedEhazards.
Edition by Phil Simmons
All Chapters Covered 1-21| Verified Questions & accurate Solutions
for Exam Preparations| A+ GRADED
1|Page
,Solution Manual for Electrical Wiring Commercial, 18th
Edition by Phil Simmons
,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
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)
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.
,ToE answerE QuestionsE 28–
31,E referE toE theE PlansE includedE withE thisE book.E DetermineE theEFollowingE dimensions.E WriteE
theE dimensionsE usingEunitEnames,E notEsymbolsE(forEexample,E 1Efoot,EnotE1’),EandEindicateEtheEso
urceEofEtheEinformation.
28. WhatEisEtheEinsideEclearEdistanceEofEtheEinteriorEstairwayEtoEtheEdrugstoreEbasement?
Answer:ETheEinsideEclearEdistanceEofEtheEinteriorEstairwayEtoEtheEDrugstoreEbasementEisE
4EEftE0Ein.E(1.22Em),EasEscaledEfromESheetEA2.
29. WhatEisEtheEgrossEsquareEfootageEofEeachEfloorEofEtheEbuilding?
Answer:E TheE grossE areaE ofE eachEfloorE ofE theE buildingE isE 60EftE ×E43EftE=E 2580E sq.EftE (18.8
2EmE×E13.1EmE=E246.5Esq.Em),EasEtakenEfromESheetsEAl,EA2,EandEA3.
30. WhatEisEtheEdistanceEinEtheEdrugstoreEfromEtheEexteriorEblockEwallEtoEtheEblockEwal
lEseparatingEtheEdrugstoreEfromEtheEbakery?
Answer:ETheEdistanceEfromEtheEexteriorEblockEwallEinEtheEDrugstoreEtoEtheEblockEwallEseparating
EtheE DrugstoreEfrom EtheEBakeryEisE 21EftE7 Ein.E(6.58Em),EasEshownEonE Sheet E A2.
31. WhatE isE theE finishedE floorE toE finishedE ceilingE heightE onE theE secondE floor?
Answer:ETheEfinishedEfloorEtoEfinishedEceilingEheightEonEtheEsecondEfloorEisE8EftE6Ein.E(2
.59Em),EasEavailableEfromEEastEandEWestEElevationsEA41–
2,EandESheetEA6,ECrossESectionsEA–AEandEB–B.
ForE problemsE 32–
34,E citeE theE NECE source.E WeE willE showE theE methodE ofE usingE theE NECEIndexE forE theE firstE t
woE questionsE inE ChapterE 1E andE willE provideE thisE sameE methodE ofElocatingE requirementsEi
nE otherEchaptersEofE thisE book.
32. TheE standardE ampereE ratingsE forE fusesE andE fixedE tripE circuitE breakers.
Answer:E TheE standardE ampereE ratingE forE fusesE andE fixedE tripE circuitE breakersE isE givenE in
NECE TableE 240.6(A).
ToEfindEthisEinformationEinEtheEIndexEofEtheENEC,ElocateE―CircuitEbreakers,EArticleE240,EandElo
cateE RatingE andE underE thatE locateE Fixed-
TripE circuitE breakers,E 240.6(A)…‖E ThisE willEprovideEtheESectionEnumberEforEtheEratings.
33. TheE minimumE bendingE radiusE forE metal-
cladE cableE withE aE smoothE sheathE withE anEexternalEdiameterEofE1Ein.
Answer:E TheE minimumE bendingE radiusE forE metalE cladE cableE withE aE smoothE sheathE withE
anEexternalEdiameterEofE1Ein.E(sizeE1)EisEgivenEinENECE330.24(A)(2)EasE12EtimesEtheEdiameter.
ToEfindEthisEinformationEinEtheEIndexEofE theE NEC,E locateE―Metal-cladE Cable,E ArticleE 330,E and
underE thatElocateE ―Bends,E 330.24.‖E 330.24(A)(2).
34. TheEpermissionEtoEuseEsplicesEinEbusbarsEasEgroundingEelectrodeEconductors.
,Answer:ETheEpermissionEtoEuseEsplicesEinEbusbarsEasEaEgroundingEelectrodeEconductorEis
EgivenEinE NECE 250.64(C)(2).
,35. a)E WhereEisEtheEsumpEpumpEinEtheECommercialEBuildingElocated?E
b) ToEwhatEbranchEcircuitEisEtheEsumpE pumpEconnected?E
Answer:
a. TheE sumpE pumpE isE locatedE inE theE Owner’sE spaceE inE theE floorE ofE theE basement.
b. TheE sumpE pumpE isE connectedE toE circuitE 11E inE theE Owner’sE panelboard.
36. WriteEaEletterEtoEoneEofEtheEorganizationsElistedEinEthisEunitErequestingEinformatio
nEaboutEtheEorganizationEandEtheEservicesEitEprovides.
Answer:E WriteE aE letterE toE oneE ofE theE organizationsE listedE inE ChapterE 1,E requestingEinformat
ionEaboutEtheEorganizationEandEtheEservicesEitEprovides.
ItEisEsuggestedEthatEtheEinstructorEassignEeachEstudentEanEorganizationEtoEcontactEtoEprovi
deEtheEclassEwithEinformationEaboutEseveralEorganizations.EStudentsEshouldEbeEencourag
edEtoEinvestigateEtheEproperEformEofEaEbusinessEletter.ETheyEshouldEbeEalertedEthatEaEpoorl
yEwrittenEletterEisEunlikelyEtoEgetEaEresponse.EIfEpossible,EtheEletterEshouldEbeEonEbusiness
EletterheadE stationery.E OneE alternativeEisEfor EtheEstudentsEtoEmakeE arrangements E withE em
ployersEtoEsendEtheElettersEonEcompanyEstationery.
37. TheE temperaturesE fromE anE arcE flashE canE reachE approximatelyE °F.
Answer:E TheE temperaturesE fromE anE arcE flashE canE reachE approximatelyE 35,000°F.
38. TheEOccupationalESafetyEandEHealthEActE(OSHA) ECodeEofEFederalERegulationsE(
CFR)ENumberE29,ESubpartES,EinEparagraphE
discussesEtheEtraining
E neededEforEthoseEwhoEfaceEtheEriskEofEelectricalEinjury.
Answer:ETheEOccupationalESafetyEandEHealthEActE(OSHA)ECodeEofEFederalERegul
ationsE(CFR)ENumberE29,ESubpartES,EinEparagraphE1910.332,EdiscussesEtheEtrainingEn
eededEforEthoseEwhoEfaceEtheEriskEofEelectricalEinjury.
39. TheENECEdefinesEaEqualifiedEpersonEasE
Answer:ETheENECEdefinesEaEQualifiedEPersonEasEOneEwhoEhasEskillsEandEknowledgeErel
atedEtoEtheEconstructionEandEoperationEofEtheEelectricalEequipmentEandEinstallationsEandEh
asEreceivedEsafetyEtrainingEtoErecognizeEandEavoidEtheEhazardsEinvolved,EArticleE100.*
40. AccordingEtoENFPAE70EEArticleE110,EanEelectricianEisEqualifiedEtoEdoEanyEandEallEelectrica
lEwiringEtasks.ETrueE FalseE
Answer:EAccordingEtoENFPAE70EEArticleE110,EanEelectricianEisEqualifiedEtoEdoEanyEandEallEel
ectricalEwiringEtasks.EFalse.
41. LiveEpartsEtoEwhichEanEemployeeE mayEbeEexposedEareErequiredEtoEbeEde-
energizedE beforeEtheEemployeeEworksEonEorEnearEthemEunlessE .
Answer:ELiveEpartsEtoEwhichEanEemployeeEmayEbeEexposedEareErequiredEtoEbeEde-
, energizedEbeforeEtheEemployeeEworksEonEorEnearEthem,EunlessEtheEemployerEcanEdemonst
rateEthatEde-energizingEintroducesEadditionalEorEincreasedEhazards.
