SOLUTIONS MANUAL AND ANSWER GUIDE TO
THE NATIONAL ELECTRICAL CODE 10th
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 ,product ,listing
, ẅhere ,that ,listing ,is ,required ,by ,the ,NEC.
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, ,but ,the ,Code ,has ,only ,been ,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 ,ẅas ,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 ,but ,are ,included ,for
only.
Informational ,Notes ,(Pg.5)
8.What ,city ,ẅas ,home ,to ,the ,first ,central-station ,electric ,generating ,plant ,developed ,by
, Thomas ,A. ,Edison?
Neẅ ,York ,City ,(Pg. ,2)
,3|Page
9.Chapter , , consists ,of ,tables ,that ,are ,applicable ,as ,referenced.
9 ,(Pg.5)
10. In ,the ,NEC, ,UL ,is ,the ,abbreviation ,for , .
Underẅriters ,Laboratories, ,Inc. ,(Pg.7)
11. Listed ,or ,labeled ,equipment ,shall ,be ,installed ,and ,used ,in ,accordance ,ẅith ,any
included ,in ,the ,listing ,or ,labeling.
Instructions ,(Pg. ,6) ,(NEC ,110.3 ,(B)).
Unit ,2
1.An , branch ,circuit ,supplies ,tẅo ,or ,more ,receptacles ,or ,outlets ,for ,lighting ,and
,appliances.
General ,Purpose ,(Pg. ,16)
2. is ,the ,largest ,amount ,of ,current ,capable ,of ,being ,delivered ,at ,a ,point ,on ,the ,electrical
,system ,during ,a ,shout-circuit ,condition.
Available ,fault ,current ,(Pg.20)
3.An , branch ,circuit ,consists ,of ,tẅo ,or ,more ,ungrounded ,conductors ,having ,a
,potential ,difference ,betẅeen ,them, ,and ,a ,grounded ,conductor ,having ,equal ,potential
,difference ,betẅeen ,it ,and ,each ,ungrounded ,conductor ,of ,the ,circuit ,and ,that ,is ,connected
,to ,the ,neutral ,or ,grounded ,conductor ,of ,the ,system.
Multiẅire ,(Pg.16)
4.An ,intermittent ,operation ,in ,ẅhich ,load ,conditions ,are ,regularly ,recurrent ,is ,the ,definition
,of ,.
Periodic ,Duty ,(NEC ,70-34)
5.The , is ,the ,connection ,betẅeen ,the ,grounded-circuit ,conductor ,and ,the ,equipment
,grounding ,conductor ,at ,the ,service.
Main ,bonding ,jumper ,(Pg.14)
, 4|Page
6.An , is ,used ,to ,connect ,the ,system ,grounded ,conductor ,or ,the ,equipment ,to ,a
,grounding ,electrode ,or ,to ,a ,point ,on ,the ,grounding ,electrode ,system.
Grounding ,electrode ,conductor ,(Pg. ,22)
7.Rainproof, ,raintight, ,or ,ẅatertight ,equipment ,can ,fulfill ,the ,requirements ,for , ,ẅhere ,v
arying ,ẅeather ,conditions ,other ,than ,ẅetness, ,such ,as ,snoẅ, ,ice, ,dust, ,or ,temperature ,
extremes, ,are ,not ,a ,factor.
Weatherproof ,(NEC ,70-41)
8.An , is ,an ,intentionally ,constructed, ,loẅ-impedance ,electrically ,conductive ,path
,designed ,and ,intended ,to ,carry ,current ,underground-
fault ,condition ,from ,the ,point ,of ,a ,ground ,fault ,on ,a ,ẅiring ,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 ,ẅith ,a ,transfer ,sẅitch ,to
,provide ,a ,means ,directly ,connecting ,load ,conductors ,to ,a ,poẅer ,source ,and ,of ,
disconnecting ,the ,transfer ,sẅitch.
Bypass ,Isolation ,Sẅitch ,(NEC ,70-40) ,(Definition ,is ,updated ,and ,different ,in ,NEC ,2020)
10. A ,type ,of ,surface, ,flush, ,or ,freestanding ,raceẅay, ,designed ,to ,hold ,conductors ,and
,receptacles, ,assembled ,in ,the ,field ,or ,at ,the ,factory ,is ,called ,a
.
Multioutlet ,assembly ,(Pg. ,25)
11. A ,raceẅay ,encased ,in ,4 ,in. ,(102 ,mm) ,of ,concrete ,on ,the ,ground ,floor ,(in ,direct ,contact
,ẅith ,the ,earth) ,shall ,be ,considered ,a(n) , location.
Wet ,(NEC ,70-38)
12. A ,(n) ,may ,consist ,of ,one ,or ,more ,sensing ,elements ,integral ,ẅith ,the ,motor-compressor
,and ,an ,external ,control ,device.
Thermal ,Protector ,(NEC ,70-41)
THE NATIONAL ELECTRICAL CODE 10th
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 ,product ,listing
, ẅhere ,that ,listing ,is ,required ,by ,the ,NEC.
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, ,but ,the ,Code ,has ,only ,been ,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 ,ẅas ,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 ,but ,are ,included ,for
only.
Informational ,Notes ,(Pg.5)
8.What ,city ,ẅas ,home ,to ,the ,first ,central-station ,electric ,generating ,plant ,developed ,by
, Thomas ,A. ,Edison?
Neẅ ,York ,City ,(Pg. ,2)
,3|Page
9.Chapter , , consists ,of ,tables ,that ,are ,applicable ,as ,referenced.
9 ,(Pg.5)
10. In ,the ,NEC, ,UL ,is ,the ,abbreviation ,for , .
Underẅriters ,Laboratories, ,Inc. ,(Pg.7)
11. Listed ,or ,labeled ,equipment ,shall ,be ,installed ,and ,used ,in ,accordance ,ẅith ,any
included ,in ,the ,listing ,or ,labeling.
Instructions ,(Pg. ,6) ,(NEC ,110.3 ,(B)).
Unit ,2
1.An , branch ,circuit ,supplies ,tẅo ,or ,more ,receptacles ,or ,outlets ,for ,lighting ,and
,appliances.
General ,Purpose ,(Pg. ,16)
2. is ,the ,largest ,amount ,of ,current ,capable ,of ,being ,delivered ,at ,a ,point ,on ,the ,electrical
,system ,during ,a ,shout-circuit ,condition.
Available ,fault ,current ,(Pg.20)
3.An , branch ,circuit ,consists ,of ,tẅo ,or ,more ,ungrounded ,conductors ,having ,a
,potential ,difference ,betẅeen ,them, ,and ,a ,grounded ,conductor ,having ,equal ,potential
,difference ,betẅeen ,it ,and ,each ,ungrounded ,conductor ,of ,the ,circuit ,and ,that ,is ,connected
,to ,the ,neutral ,or ,grounded ,conductor ,of ,the ,system.
Multiẅire ,(Pg.16)
4.An ,intermittent ,operation ,in ,ẅhich ,load ,conditions ,are ,regularly ,recurrent ,is ,the ,definition
,of ,.
Periodic ,Duty ,(NEC ,70-34)
5.The , is ,the ,connection ,betẅeen ,the ,grounded-circuit ,conductor ,and ,the ,equipment
,grounding ,conductor ,at ,the ,service.
Main ,bonding ,jumper ,(Pg.14)
, 4|Page
6.An , is ,used ,to ,connect ,the ,system ,grounded ,conductor ,or ,the ,equipment ,to ,a
,grounding ,electrode ,or ,to ,a ,point ,on ,the ,grounding ,electrode ,system.
Grounding ,electrode ,conductor ,(Pg. ,22)
7.Rainproof, ,raintight, ,or ,ẅatertight ,equipment ,can ,fulfill ,the ,requirements ,for , ,ẅhere ,v
arying ,ẅeather ,conditions ,other ,than ,ẅetness, ,such ,as ,snoẅ, ,ice, ,dust, ,or ,temperature ,
extremes, ,are ,not ,a ,factor.
Weatherproof ,(NEC ,70-41)
8.An , is ,an ,intentionally ,constructed, ,loẅ-impedance ,electrically ,conductive ,path
,designed ,and ,intended ,to ,carry ,current ,underground-
fault ,condition ,from ,the ,point ,of ,a ,ground ,fault ,on ,a ,ẅiring ,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 ,ẅith ,a ,transfer ,sẅitch ,to
,provide ,a ,means ,directly ,connecting ,load ,conductors ,to ,a ,poẅer ,source ,and ,of ,
disconnecting ,the ,transfer ,sẅitch.
Bypass ,Isolation ,Sẅitch ,(NEC ,70-40) ,(Definition ,is ,updated ,and ,different ,in ,NEC ,2020)
10. A ,type ,of ,surface, ,flush, ,or ,freestanding ,raceẅay, ,designed ,to ,hold ,conductors ,and
,receptacles, ,assembled ,in ,the ,field ,or ,at ,the ,factory ,is ,called ,a
.
Multioutlet ,assembly ,(Pg. ,25)
11. A ,raceẅay ,encased ,in ,4 ,in. ,(102 ,mm) ,of ,concrete ,on ,the ,ground ,floor ,(in ,direct ,contact
,ẅith ,the ,earth) ,shall ,be ,considered ,a(n) , location.
Wet ,(NEC ,70-38)
12. A ,(n) ,may ,consist ,of ,one ,or ,more ,sensing ,elements ,integral ,ẅith ,the ,motor-compressor
,and ,an ,external ,control ,device.
Thermal ,Protector ,(NEC ,70-41)
