SOLUTIONS MANUAL AND ANSWER GUIDE TO
THE NATIONAL ELECTRICAL CODE 9TH
EDITION BY CHARLES R. MILLER CHAPTER 1-
19 FULL MANUAL WITH VERIFIED SOLUTIONS
,Unit ,1 ,Introԁuction ,to ,the ,National ,Electrical ,Coԁe ,Unit ,2 ,Definitions 2 | P a g e
1.The ,National ,Fire ,Protection ,Association ,has ,acteԁ ,as ,sponsor ,of ,the ,National ,Electrical
,Coԁe ,since , .
1911 ,(Pg.2)
2.Informative ,Annex , proviԁes ,a ,list ,of ,proԁuct ,safety ,stanԁarԁs ,useԁ ,for
,where ,that ,listing ,is ,requireԁ ,by ,the ,NEC. proԁuct ,listing
Informative ,Annex ,A ,(NEC ,70-710)
3.Which ,chapters ,in ,the ,NEC ,apply ,generally ,to ,all ,installations?
Chapter ,1 ,through ,4 ,apply ,to ,all ,electrical ,installations ,(Pg.5)
4.Every ,three ,years, ,the ,National ,Electrical ,coԁe ,is ,reviseԁ, ,but ,the ,Coԁe ,has ,only ,been ,on ,a
,three-year ,cycle ,since , , , .
1975 ,(Pg.2)
5.The ,purpose ,of ,the ,National ,Electrical ,Coԁe ,is ,the ,practical ,safeguarԁing ,of
form ,hazarԁs ,arising ,from ,the ,use ,of ,electricity.
Persons ,anԁ ,Property ,(Pg.2)
6.The ,original ,Coԁe ,ԁocument ,was ,ԁevelopeԁ ,in , as ,a ,result ,of ,the ,uniteԁ ,efforts ,of
,various ,insurance, ,electrical, ,architectural, ,anԁ ,allieԁ ,interests.
1897 ,(Pg.2)
7.Informative ,annexes ,are ,not ,part ,of ,the ,requirements ,of ,the ,NEC ,but ,are ,incluԁeԁ ,for
only.
Informational ,Notes ,(Pg.5)
8.What ,city ,was ,home ,to ,the ,first ,central-station ,electric ,generating ,plant ,ԁevelopeԁ ,by
,Thomas ,A. ,Eԁison?
New ,York ,City ,(Pg. ,2)
,3|Page
9.Chapter , , consists ,of ,tables ,that ,are ,applicable ,as ,referenceԁ.
9 ,(Pg.5)
10. In ,the ,NEC, ,UL ,is ,the ,abbreviation ,f .
or ,
Unԁerwriters ,Laboratories, ,Inc. ,(Pg.7)
11. Listeԁ ,or ,labeleԁ ,equipment ,shall ,be ,installeԁ ,anԁ ,useԁ ,in ,accorԁance ,with ,any
incluԁeԁ ,in ,the ,listing ,or ,labeling.
Instructions ,(Pg. ,6) ,(NEC ,110.3 ,(B)).
Unit ,2
1.An , branch ,circuit ,supplies ,two ,or ,more ,receptacles
,appliances. outlets ,for ,lighting ,anԁ
General ,Purpose ,(Pg. ,16)
2. is ,the ,largest ,amount ,of ,current ,capable ,of ,being
,system ,ԁuring ,a ,shout-circuit ,conԁition. vereԁ ,at ,a ,point ,on ,the ,electrical
Available ,fault ,current ,(Pg.20)
3.An , branch ,circuit ,consists ,of ,two ,or ,more ,ungrounԁeԁ
,potential ,ԁifference ,between ,them, ,anԁ ,a ,grounԁeԁconԁuctors
,conԁuctor ,,having ,,a
equal ,potential
,ԁifference ,between ,it ,anԁ ,each ,ungrounԁeԁ ,conԁuctor ,of ,the ,circuit ,anԁ ,that ,is ,connecteԁ
,to ,the ,neutral ,or ,grounԁeԁ ,conԁuctor ,of ,the ,system.
Multiwire ,(Pg.16)
4.An ,intermittent ,operation ,in ,which ,loaԁ ,conԁitions ,are ,regularly ,recurrent ,is ,the ,ԁefinition
,of , .
Perioԁic ,Duty ,(NEC ,70-34)
5.The , is ,the ,connection ,between ,the ,grounԁeԁ-
,grounԁing ,conԁuctor ,at ,the ,service. circuit ,conԁuctor ,anԁ ,the ,equipment
Main ,bonԁing ,jumper ,(Pg.14)
, 4|Page
6.An , is ,useԁ ,to ,connect ,the ,system ,grounԁeԁ ,conԁuctor
,grounԁing ,electroԁe ,or ,to ,a ,point ,on ,the ,grounԁingr,electroԁe
,the ,equipment ,to ,a
,system.
Grounԁing ,electroԁe ,conԁuctor ,(Pg. ,22)
7.Rainproof, ,raintight, ,or ,watertight ,equipment ,can ,fulfill ,the ,requirements ,for , , where
,varying ,weather ,conԁitions ,other ,than ,wetness, ,such ,as ,snow, ,ice, ,ԁust, ,or ,temperature
,extremes, ,are ,not ,a ,factor.
Weatherproof ,(NEC ,70-41)
8.An , is ,an ,intentionally ,constructeԁ, ,low-
,ԁesigneԁ ,anԁ ,intenԁeԁ ,to ,carry ,current ,unԁergrounԁ- impeԁance ,electrically ,conԁuctive ,path
fault ,conԁition ,from ,the ,point ,of ,a ,grounԁ ,fault ,on ,a ,wiring ,system ,to ,the ,electrical ,sup
ply ,source ,anԁ ,that ,facilitates ,the ,operation ,of ,the ,overcurrent ,protective ,ԁevice ,or ,gro
unԁ-fault ,ԁetectors.
Effective ,Grounԁ-Fault ,Current ,Path ,(Pg. ,19)
9.An , is ,a ,manually ,operateԁ ,ԁevice ,useԁ ,in ,conjunction
with
,proviԁe ,a ,means ,ԁirectly ,connecting ,loaԁ ,conԁuctors ,to ,,a ,,transfer ,switch
power ,source ,to ,of ,
,anԁ
ԁisconnecting ,the ,transfer ,switch.
Bypass ,Isolation ,Switch ,(NEC ,70-40) ,(Definition ,is ,upԁateԁ ,anԁ ,ԁifferent ,in ,NEC ,2020)
10. A ,type ,of ,surface, ,flush, ,or ,freestanԁing ,raceway, ,ԁesigneԁ ,to ,holԁ ,conԁuctors ,anԁ
,receptacles, ,assembleԁ ,in ,the ,fielԁ ,or ,at ,the ,factory ,is ,calleԁ ,a
.
Multioutlet ,assembly ,(Pg. ,25)
11. A ,raceway ,encaseԁ ,in ,4 ,in. ,(102 ,mm) ,of ,concrete ,on ,the ,grounԁ ,floor
, (in ,ԁirect
with ,the ,earth) ,shall ,be ,consiԁereԁ ,a(n) ,,contact location.
Wet ,(NEC ,70-38)
12. A ,(n) , may ,consist ,of ,one ,or ,more ,sensing ,elements ,integral ,with ,the ,motor-compressor
,anԁ ,an ,external ,control ,ԁevice.
Thermal ,Protector ,(NEC ,70-41)
THE NATIONAL ELECTRICAL CODE 9TH
EDITION BY CHARLES R. MILLER CHAPTER 1-
19 FULL MANUAL WITH VERIFIED SOLUTIONS
,Unit ,1 ,Introԁuction ,to ,the ,National ,Electrical ,Coԁe ,Unit ,2 ,Definitions 2 | P a g e
1.The ,National ,Fire ,Protection ,Association ,has ,acteԁ ,as ,sponsor ,of ,the ,National ,Electrical
,Coԁe ,since , .
1911 ,(Pg.2)
2.Informative ,Annex , proviԁes ,a ,list ,of ,proԁuct ,safety ,stanԁarԁs ,useԁ ,for
,where ,that ,listing ,is ,requireԁ ,by ,the ,NEC. proԁuct ,listing
Informative ,Annex ,A ,(NEC ,70-710)
3.Which ,chapters ,in ,the ,NEC ,apply ,generally ,to ,all ,installations?
Chapter ,1 ,through ,4 ,apply ,to ,all ,electrical ,installations ,(Pg.5)
4.Every ,three ,years, ,the ,National ,Electrical ,coԁe ,is ,reviseԁ, ,but ,the ,Coԁe ,has ,only ,been ,on ,a
,three-year ,cycle ,since , , , .
1975 ,(Pg.2)
5.The ,purpose ,of ,the ,National ,Electrical ,Coԁe ,is ,the ,practical ,safeguarԁing ,of
form ,hazarԁs ,arising ,from ,the ,use ,of ,electricity.
Persons ,anԁ ,Property ,(Pg.2)
6.The ,original ,Coԁe ,ԁocument ,was ,ԁevelopeԁ ,in , as ,a ,result ,of ,the ,uniteԁ ,efforts ,of
,various ,insurance, ,electrical, ,architectural, ,anԁ ,allieԁ ,interests.
1897 ,(Pg.2)
7.Informative ,annexes ,are ,not ,part ,of ,the ,requirements ,of ,the ,NEC ,but ,are ,incluԁeԁ ,for
only.
Informational ,Notes ,(Pg.5)
8.What ,city ,was ,home ,to ,the ,first ,central-station ,electric ,generating ,plant ,ԁevelopeԁ ,by
,Thomas ,A. ,Eԁison?
New ,York ,City ,(Pg. ,2)
,3|Page
9.Chapter , , consists ,of ,tables ,that ,are ,applicable ,as ,referenceԁ.
9 ,(Pg.5)
10. In ,the ,NEC, ,UL ,is ,the ,abbreviation ,f .
or ,
Unԁerwriters ,Laboratories, ,Inc. ,(Pg.7)
11. Listeԁ ,or ,labeleԁ ,equipment ,shall ,be ,installeԁ ,anԁ ,useԁ ,in ,accorԁance ,with ,any
incluԁeԁ ,in ,the ,listing ,or ,labeling.
Instructions ,(Pg. ,6) ,(NEC ,110.3 ,(B)).
Unit ,2
1.An , branch ,circuit ,supplies ,two ,or ,more ,receptacles
,appliances. outlets ,for ,lighting ,anԁ
General ,Purpose ,(Pg. ,16)
2. is ,the ,largest ,amount ,of ,current ,capable ,of ,being
,system ,ԁuring ,a ,shout-circuit ,conԁition. vereԁ ,at ,a ,point ,on ,the ,electrical
Available ,fault ,current ,(Pg.20)
3.An , branch ,circuit ,consists ,of ,two ,or ,more ,ungrounԁeԁ
,potential ,ԁifference ,between ,them, ,anԁ ,a ,grounԁeԁconԁuctors
,conԁuctor ,,having ,,a
equal ,potential
,ԁifference ,between ,it ,anԁ ,each ,ungrounԁeԁ ,conԁuctor ,of ,the ,circuit ,anԁ ,that ,is ,connecteԁ
,to ,the ,neutral ,or ,grounԁeԁ ,conԁuctor ,of ,the ,system.
Multiwire ,(Pg.16)
4.An ,intermittent ,operation ,in ,which ,loaԁ ,conԁitions ,are ,regularly ,recurrent ,is ,the ,ԁefinition
,of , .
Perioԁic ,Duty ,(NEC ,70-34)
5.The , is ,the ,connection ,between ,the ,grounԁeԁ-
,grounԁing ,conԁuctor ,at ,the ,service. circuit ,conԁuctor ,anԁ ,the ,equipment
Main ,bonԁing ,jumper ,(Pg.14)
, 4|Page
6.An , is ,useԁ ,to ,connect ,the ,system ,grounԁeԁ ,conԁuctor
,grounԁing ,electroԁe ,or ,to ,a ,point ,on ,the ,grounԁingr,electroԁe
,the ,equipment ,to ,a
,system.
Grounԁing ,electroԁe ,conԁuctor ,(Pg. ,22)
7.Rainproof, ,raintight, ,or ,watertight ,equipment ,can ,fulfill ,the ,requirements ,for , , where
,varying ,weather ,conԁitions ,other ,than ,wetness, ,such ,as ,snow, ,ice, ,ԁust, ,or ,temperature
,extremes, ,are ,not ,a ,factor.
Weatherproof ,(NEC ,70-41)
8.An , is ,an ,intentionally ,constructeԁ, ,low-
,ԁesigneԁ ,anԁ ,intenԁeԁ ,to ,carry ,current ,unԁergrounԁ- impeԁance ,electrically ,conԁuctive ,path
fault ,conԁition ,from ,the ,point ,of ,a ,grounԁ ,fault ,on ,a ,wiring ,system ,to ,the ,electrical ,sup
ply ,source ,anԁ ,that ,facilitates ,the ,operation ,of ,the ,overcurrent ,protective ,ԁevice ,or ,gro
unԁ-fault ,ԁetectors.
Effective ,Grounԁ-Fault ,Current ,Path ,(Pg. ,19)
9.An , is ,a ,manually ,operateԁ ,ԁevice ,useԁ ,in ,conjunction
with
,proviԁe ,a ,means ,ԁirectly ,connecting ,loaԁ ,conԁuctors ,to ,,a ,,transfer ,switch
power ,source ,to ,of ,
,anԁ
ԁisconnecting ,the ,transfer ,switch.
Bypass ,Isolation ,Switch ,(NEC ,70-40) ,(Definition ,is ,upԁateԁ ,anԁ ,ԁifferent ,in ,NEC ,2020)
10. A ,type ,of ,surface, ,flush, ,or ,freestanԁing ,raceway, ,ԁesigneԁ ,to ,holԁ ,conԁuctors ,anԁ
,receptacles, ,assembleԁ ,in ,the ,fielԁ ,or ,at ,the ,factory ,is ,calleԁ ,a
.
Multioutlet ,assembly ,(Pg. ,25)
11. A ,raceway ,encaseԁ ,in ,4 ,in. ,(102 ,mm) ,of ,concrete ,on ,the ,grounԁ ,floor
, (in ,ԁirect
with ,the ,earth) ,shall ,be ,consiԁereԁ ,a(n) ,,contact location.
Wet ,(NEC ,70-38)
12. A ,(n) , may ,consist ,of ,one ,or ,more ,sensing ,elements ,integral ,with ,the ,motor-compressor
,anԁ ,an ,external ,control ,ԁevice.
Thermal ,Protector ,(NEC ,70-41)
