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 ,Introduction ,to ,the ,National ,Electrical ,Code ,Unit ,2 ,Definitions 2 | P a g e
1.The ,National ,Fire ,Protection ,Association ,has ,acted ,as ,sponsor ,of ,the ,National ,Electrical
,Code ,since , .
1911 ,(Pg.2)
2.Informative ,Annex , provides ,a ,list ,of ,product ,safety ,standards ,used ,for
,where ,that ,listing ,is ,required ,Ьy ,the ,NEC. product ,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 ,code ,is ,revised, ,Ьut ,the ,Code ,has ,only ,Ьeen ,on ,a
,three-year ,cycle ,since , , , .
1975 ,(Pg.2)
5.The ,purpose ,of ,the ,National ,Electrical ,Code ,is ,the ,practical ,safeguarding ,of
form ,hazards ,arising ,from ,the ,use ,of ,electricity.
Persons ,and ,Property ,(Pg.2)
6.The ,original ,Code ,document ,was ,developed ,in , as ,a ,result ,of ,the ,united ,efforts ,of
,various ,insurance, ,electrical, ,architectural, ,and ,allied ,interests.
1897 ,(Pg.2)
7.Informative ,annexes ,are ,not ,part ,of ,the ,requirements ,of ,the ,NEC ,Ьut ,are ,included ,for
only.
Informational ,Notes ,(Pg.5)
8.What ,city ,was ,home ,to ,the ,first ,central-station ,electric ,generating ,plant ,developed ,Ьy
,Thomas ,A. ,Edison?
New ,York ,City ,(Pg. ,2)
,3|Page
9.Chapter , , consists ,of ,taЬles ,that ,are ,applicaЬle ,as ,referenced.
9 ,(Pg.5)
10. In ,the ,NEC, ,UL ,is ,the ,aЬЬreviation , .
for ,
Underwriters ,LaЬoratories, ,Inc. ,(Pg.7)
11. Listed ,or ,laЬeled ,equipment ,shall ,Ьe ,installed ,and ,used ,in ,accordance ,with ,any
included ,in ,the ,listing ,or ,laЬeling.
Instructions ,(Pg. ,6) ,(NEC ,110.3 ,(B)).
Unit ,2
1.An , Ьranch ,circuit ,supplies ,two ,or ,more ,receptacles
,appliances. outlets ,for ,lighting ,and
General ,Purpose ,(Pg. ,16)
2. is ,the ,largest ,amount ,of ,current ,capaЬle ,of ,Ьeing
,system ,during ,a ,shout-circuit ,condition. ivered ,at ,a ,point ,on ,the ,electrical
AvailaЬle ,fault ,current ,(Pg.20)
3.An , Ьranch ,circuit ,consists ,of ,two ,or ,more ,ungrounded
,potential ,difference ,Ьetween ,them, ,and ,a ,grounded,conductors
,conductor ,,having ,,equal
a ,potential
,difference ,Ьetween ,it ,and ,each ,ungrounded ,conductor ,of ,the ,circuit ,and ,that ,is ,connected
,to ,the ,neutral ,or ,grounded ,conductor ,of ,the ,system.
Multiwire ,(Pg.16)
4.An ,intermittent ,operation ,in ,which ,load ,conditions ,are ,regularly ,recurrent ,is ,the ,definition
,of , .
Periodic ,Duty ,(NEC ,70-34)
5.The , is ,the ,connection ,Ьetween ,the ,grounded-
,grounding ,conductor ,at ,the ,service. circuit ,conductor ,and ,the ,equipment
Main ,Ьonding ,jumper ,(Pg.14)
, 4|Page
6.An , is ,used ,to ,connect ,the ,system ,grounded ,conductor
,grounding ,electrode ,or ,to ,a ,point ,on ,the ,groundingr,electrode
,the ,equipment ,to ,a
,system.
Grounding ,electrode ,conductor ,(Pg. ,22)
7.Rainproof, ,raintight, ,or ,watertight ,equipment ,can ,fulfill ,the ,requirements ,for , , where
,varying ,weather ,conditions ,other ,than ,wetness, ,such ,as ,snow, ,ice, ,dust, ,or ,temperature
,extremes, ,are ,not ,a ,factor.
Weatherproof ,(NEC ,70-41)
8.An , is ,an ,intentionally ,constructed, ,low-
,designed ,and ,intended ,to ,carry ,current ,underground- impedance ,electrically ,conductive ,path
fault ,condition ,from ,the ,point ,of ,a ,ground ,fault ,on ,a ,wiring ,system ,to ,the ,electrical ,sup
ply ,source ,and ,that ,facilitates ,the ,operation ,of ,the ,overcurrent ,protective ,device ,or ,gro
und-fault ,detectors.
Effective ,Ground-Fault ,Current ,Path ,(Pg. ,19)
9.An , is ,a ,manually ,operated ,device ,used ,in ,conjunction
with
,provide ,a ,means ,directly ,connecting ,load ,conductors ,to ,,a ,,transfer ,switch
power ,source ,to ,of ,
,and
disconnecting ,the ,transfer ,switch.
Bypass ,Isolation ,Switch ,(NEC ,70-40) ,(Definition ,is ,updated ,and ,different ,in ,NEC ,2020)
10. A ,type ,of ,surface, ,flush, ,or ,freestanding ,raceway, ,designed ,to ,hold ,conductors ,and
,receptacles, ,assemЬled ,in ,the ,field ,or ,at ,the ,factory ,is ,called ,a
.
Multioutlet ,assemЬly ,(Pg. ,25)
11. A ,raceway ,encased ,in ,4 ,in. ,(102 ,mm) ,of ,concrete ,on ,the ,ground ,floor
, (in ,direct
with ,the ,earth) ,shall ,Ьe ,considered ,a(n) ,,contact location.
Wet ,(NEC ,70-38)
12. A ,(n) , may ,consist ,of ,one ,or ,more ,sensing ,elements ,integral ,with ,the ,motor-compressor
,and ,an ,external ,control ,device.
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 ,Introduction ,to ,the ,National ,Electrical ,Code ,Unit ,2 ,Definitions 2 | P a g e
1.The ,National ,Fire ,Protection ,Association ,has ,acted ,as ,sponsor ,of ,the ,National ,Electrical
,Code ,since , .
1911 ,(Pg.2)
2.Informative ,Annex , provides ,a ,list ,of ,product ,safety ,standards ,used ,for
,where ,that ,listing ,is ,required ,Ьy ,the ,NEC. product ,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 ,code ,is ,revised, ,Ьut ,the ,Code ,has ,only ,Ьeen ,on ,a
,three-year ,cycle ,since , , , .
1975 ,(Pg.2)
5.The ,purpose ,of ,the ,National ,Electrical ,Code ,is ,the ,practical ,safeguarding ,of
form ,hazards ,arising ,from ,the ,use ,of ,electricity.
Persons ,and ,Property ,(Pg.2)
6.The ,original ,Code ,document ,was ,developed ,in , as ,a ,result ,of ,the ,united ,efforts ,of
,various ,insurance, ,electrical, ,architectural, ,and ,allied ,interests.
1897 ,(Pg.2)
7.Informative ,annexes ,are ,not ,part ,of ,the ,requirements ,of ,the ,NEC ,Ьut ,are ,included ,for
only.
Informational ,Notes ,(Pg.5)
8.What ,city ,was ,home ,to ,the ,first ,central-station ,electric ,generating ,plant ,developed ,Ьy
,Thomas ,A. ,Edison?
New ,York ,City ,(Pg. ,2)
,3|Page
9.Chapter , , consists ,of ,taЬles ,that ,are ,applicaЬle ,as ,referenced.
9 ,(Pg.5)
10. In ,the ,NEC, ,UL ,is ,the ,aЬЬreviation , .
for ,
Underwriters ,LaЬoratories, ,Inc. ,(Pg.7)
11. Listed ,or ,laЬeled ,equipment ,shall ,Ьe ,installed ,and ,used ,in ,accordance ,with ,any
included ,in ,the ,listing ,or ,laЬeling.
Instructions ,(Pg. ,6) ,(NEC ,110.3 ,(B)).
Unit ,2
1.An , Ьranch ,circuit ,supplies ,two ,or ,more ,receptacles
,appliances. outlets ,for ,lighting ,and
General ,Purpose ,(Pg. ,16)
2. is ,the ,largest ,amount ,of ,current ,capaЬle ,of ,Ьeing
,system ,during ,a ,shout-circuit ,condition. ivered ,at ,a ,point ,on ,the ,electrical
AvailaЬle ,fault ,current ,(Pg.20)
3.An , Ьranch ,circuit ,consists ,of ,two ,or ,more ,ungrounded
,potential ,difference ,Ьetween ,them, ,and ,a ,grounded,conductors
,conductor ,,having ,,equal
a ,potential
,difference ,Ьetween ,it ,and ,each ,ungrounded ,conductor ,of ,the ,circuit ,and ,that ,is ,connected
,to ,the ,neutral ,or ,grounded ,conductor ,of ,the ,system.
Multiwire ,(Pg.16)
4.An ,intermittent ,operation ,in ,which ,load ,conditions ,are ,regularly ,recurrent ,is ,the ,definition
,of , .
Periodic ,Duty ,(NEC ,70-34)
5.The , is ,the ,connection ,Ьetween ,the ,grounded-
,grounding ,conductor ,at ,the ,service. circuit ,conductor ,and ,the ,equipment
Main ,Ьonding ,jumper ,(Pg.14)
, 4|Page
6.An , is ,used ,to ,connect ,the ,system ,grounded ,conductor
,grounding ,electrode ,or ,to ,a ,point ,on ,the ,groundingr,electrode
,the ,equipment ,to ,a
,system.
Grounding ,electrode ,conductor ,(Pg. ,22)
7.Rainproof, ,raintight, ,or ,watertight ,equipment ,can ,fulfill ,the ,requirements ,for , , where
,varying ,weather ,conditions ,other ,than ,wetness, ,such ,as ,snow, ,ice, ,dust, ,or ,temperature
,extremes, ,are ,not ,a ,factor.
Weatherproof ,(NEC ,70-41)
8.An , is ,an ,intentionally ,constructed, ,low-
,designed ,and ,intended ,to ,carry ,current ,underground- impedance ,electrically ,conductive ,path
fault ,condition ,from ,the ,point ,of ,a ,ground ,fault ,on ,a ,wiring ,system ,to ,the ,electrical ,sup
ply ,source ,and ,that ,facilitates ,the ,operation ,of ,the ,overcurrent ,protective ,device ,or ,gro
und-fault ,detectors.
Effective ,Ground-Fault ,Current ,Path ,(Pg. ,19)
9.An , is ,a ,manually ,operated ,device ,used ,in ,conjunction
with
,provide ,a ,means ,directly ,connecting ,load ,conductors ,to ,,a ,,transfer ,switch
power ,source ,to ,of ,
,and
disconnecting ,the ,transfer ,switch.
Bypass ,Isolation ,Switch ,(NEC ,70-40) ,(Definition ,is ,updated ,and ,different ,in ,NEC ,2020)
10. A ,type ,of ,surface, ,flush, ,or ,freestanding ,raceway, ,designed ,to ,hold ,conductors ,and
,receptacles, ,assemЬled ,in ,the ,field ,or ,at ,the ,factory ,is ,called ,a
.
Multioutlet ,assemЬly ,(Pg. ,25)
11. A ,raceway ,encased ,in ,4 ,in. ,(102 ,mm) ,of ,concrete ,on ,the ,ground ,floor
, (in ,direct
with ,the ,earth) ,shall ,Ьe ,considered ,a(n) ,,contact location.
Wet ,(NEC ,70-38)
12. A ,(n) , may ,consist ,of ,one ,or ,more ,sensing ,elements ,integral ,with ,the ,motor-compressor
,and ,an ,external ,control ,device.
Thermal ,Protector ,(NEC ,70-41)
