NYC MASTER ELECTRICAL EXAM
QUESTIONS AND ANSWERS
neutral bpoint b- bcorrect banswer✔✔The bcommon bpoint bon ba bwye-connection bin ba
bpolyphase bsystem bor bmidpoint bon ba bsingle bphase, b3-wire bsystem, bor bmidpoint bof
ba bsingle bphase bportion bof ba b3-phase bdelta bsystem, bor ba bmidpoint bof ba b3-wire,
bdirect bcurrent bsystem
In bthe bNEC bthe bwords b___________indicate ba bmandatory brequirement b- bcorrect
banswer✔✔Shall bor bshall bnot
On ba bfour bwire bDelta bconnected bsystem bwith ba bmidpoint bof bone bphase bwinding bis
bgrounded, bonly bthe bconductor bor bbus bbar bhaving ba bhigher bphase bvoltage bthe
bground bshall bbe bdurably band bpermanently bmarked bby ban bouter bfinish bthat bis
b_______ bin bcolor bor bby bother beffective bmeans. bSuch bIdentification bshall bbe
bplaced bat beach bpoint bon bthe bsystem bwhere bconnection bis bmade bif bthe bgrounded
bconductor bis balso bpresent. b- bcorrect banswer✔✔Orange
The brequired bworking bspace bfor baccess bto blive bparts boperating bat b300 bV bto
bground, bwhere bthere bare bexposed blive bparts bon bone bside band bgrounded bparts bon
bthe bother bside bis b____________. b- bcorrect banswer✔✔3 bfeet b6 binches
The bdimensions bof bworking bspace bfor baccess bto blive bparts boperating bat b300 bV,
bnominal bto bground, bwhere bthere bare bexpose blive bparts bon bboth bsides bof bthe
bworkspace bis________________. b- bcorrect banswer✔✔4 bfeet
110.26 bA1- bDead bfront bassemblies bworking bspace b- bcorrect banswer✔✔30" bfor
bnon-electrical bparts
36" bfor belectrical bparts
The bworking bspace bin bfront bof bthe belectrical bequipment bshall bnot bbe bless bthan
b_______wide, bor bof bthe bwidth bof bthe bequipment, bwhichever bis bgreater. b- bcorrect
banswer✔✔30"
Large bequipment b- bcorrect banswer✔✔1200 bA bor bgreater band bover b6 bfeet bwide
,Large bequipment bmeans bof begress b- bcorrect banswer✔✔Two bmeans bof begress b24"
bwide bby b6.5 bfeet btall bunless bthe bfollowing bcondutions bare bmet b
1) bunobstructed begress
2) bDouble bthe bworkspace
Headroom bshall bnot bbe bless bthan b_______. b- bcorrect banswer✔✔6.5 bfeet bor bthe
bheight bof bthe bequipment
Live bparts bof belectrical bequipment boperating bat b______volts bor bmore bshe'll bbe
bguarded bagainst baccidental bcontact bor bapproved benclosures bor bby bany bof bthe
bfollowing bmeans b- bcorrect banswer✔✔50 bvolts b
4) bby belevation bof b8 bfeet bor bmore babove bthe bfloor bor bother bworking bsurface
A bfence bshall bnot bbe bless bthan b______feet bin bheight b- bcorrect banswer✔✔8 bfeet
One bentrance bto benclosures bfor belectrical binstallations bas bdescribed bin b110.31 bnot
bless bthan b_______wide band b_________high bshall bbe bprovided bto bgive baccess bto
bthe bworking bspace baround bthe belectrical bequipment b- bcorrect banswer✔✔30 binches
band b6.5 bfeet
Network bcompartments bshall bhave bat bleast b________means bof baccess. bEach bdoor
bshe'll bhave ban baccess bthat bleads bto ba blegal bexit. b- bcorrect banswer✔✔Two
Where brear baccess bis brequired bto bwork bon bdeenergized bparts bon bthe bback bof
benclosed bequipment ba bminimum bworking bspace bof b__________horizontally bshall
bbe bprovided b- bcorrect banswer✔✔30 binches
All bnon-current bcarrying bmetal bparts bof belectrical bequipment band ball bmetal
braceways band bcable bshall bbe bsolidly bgrounded band bbonded bto ball bmetal bpipes bin
brails bat bthe bportal band bthe bintervals bnot bexceeding b_____________throughout bthe
btunnel. b- bcorrect banswer✔✔1000 bfeet
Manhole bworkspace bfor bcabling-A bclear bworkspace bnot bless bthan b_______wide
bshall bbe bprovided bwere bcables bare blocated bon bboth bsides band bnot bless bthan
b_______were bcables bare bonly bon bone bside. b- bcorrect banswer✔✔3 bfeet b
2-1/2 bfeet
Access bto bmanhole bdimensions. bRectangular baccess bopenings bshall bnot bbe bless
bthan b_______. bRound baccess bopenings bin ba bmanhole bshall bbe bnot bless bthan
b______inches bin bdiameter b- bcorrect banswer✔✔26" bx b22"
26"
Manhole bopenings bfor bpersonnel bshall bbe blocated bwhere bthey bare bnot bdirectly
babove belectrical bequipment bor bconductors bin bthe benclosure. bWhere bthis bis bnot
,bpracticeable beither ba b________or ba b_______shall bbe bprovided. b- bcorrect
banswer✔✔Protective bbarrier bof bfixed bladder
And binsulated bgrounded bconductor bof b_____or bsmaller bshall bbe bidentified bby ba
bcontinuous bwhite bor bgray bouter bfinish bor bby bthree bcontinuous bwhite bstripes bon
bother bthan bgreen binsulation balong bits bentire blength. b- bcorrect banswer✔✔6 bawg
Manhole bcovers bshall bbe bover b______pounds bor botherwise bdesignated bto brequire
bthe buse bof btools bto bopen. b- bcorrect banswer✔✔100 bpounds
The bgrounded bconductors bof bother bsystems bshall bhave ba bdifferent bouter bcovering
bconforming bto b200.6A bor b200.6B bor bby ban bouter bcovering bof b______or
b_______with ba breadily bdistinguishable bcolored bstripe bother bthan bgreen brunning
balong bthe binsulation b- bcorrect banswer✔✔White bor bgray
Where bconductors bof bdifferent bsystems bare binstalled bin bthe bsame brace bway, bone
bsystem bshe'll bhave ba bneutral bhaving ban bouter bcovering bof bwhite bor bnatural bgray
band beach bother bsystem bhaving ba bneutral bshall bhave ban banother bcovering bof b-
bcorrect banswer✔✔White bwith bcolored bStripe bother bthan bgreen bor bdistinguish bby
bother bsuitable bapproved bmeans
For bscrew bshell bdevices bwith battach bleads bthe bconductor battached bto bthe bscrew
bshell bshall bhave ba b_______or b________finish. b- bcorrect banswer✔✔White bor bgray
In baddition bto bthe bnumber bof bbranch bcircuits brequired bby bother bparts bof bthe
bsection b_______or bmore b20 bA bsmall bappliance bbranch bcircuits bshall bbe bprovided
bfor ball breceptacle boutlets bspecified bby b210.52B. b- bcorrect banswer✔✔Two
An bindividual bbranch bcircuit bshall bbe bprovided bfor beach b_________receptacle
brequired bby b210.52 bI. b- bcorrect banswer✔✔Air-Conditioning
Branch bcircuits brequired bin ba bdwelling bunit. b- bcorrect banswer✔✔1) bsmall bappliance
bbranch bcircuit
2) blaundry bbranch bcircuit
3) bbathroom bbranch bcircuits
4) bAir-Conditioning b(NYC bAMEND)
The bmaximum bvoltage bdrop bon bbranch bcircuit bconductors bis b_________percent. b-
bcorrect banswer✔✔3% b
Overall b5%
The bmaximum bvoltage bdrop bon bfeeder bcircuits bis b________. b- bcorrect
banswer✔✔2%
Overall b5%
, Dwelling bunit bcircuits brunning bthrough banother bdwelling bunit bin bcommon bareas.
bWhat bpercentage bof bchange bwill brequire bit bto bbe bbrought bup bto bcurrent bcode? b-
bcorrect banswer✔✔50%
Receptacle boutlets bin bfloors bshall bnot bbe bcounted bas bpart bof bthe brequired bnumber
bof breceptacle boutlets bunless blocated bwithin b_________of bthe bwall. b- bcorrect
banswer✔✔18"
Outlets bmay bbe binstalled bin ba bdwelling bunit bfor bspecific bappliance bsuch bas blaundry
bequipment. bWhat bis bthe bmaximum bdistance ballowed bbetween bthis boutlet band bthe
bappliance? b- bcorrect banswer✔✔6 bfeet
A breceptacle bconnected bto bone bof bthe bdwelling bunit bsmall bappliance bbranch
bcircuits bcan bbe bused bto bsupply ba(n) b__________in bany bof bthe brooms bspecified bin
b210.52B1. b- bcorrect banswer✔✔Electric bclock
How bmany breceptacles bare brequired bwithin bthe bperimeter bof ba bbalcony, bdeck bor
bporch bwith ba busable barea bof bless bthan b20 bft.² b- bcorrect banswer✔✔1
The bnumber bof breceptacle boutlets bfor bguest brooms bin bhotels band bmotels bshall bnot
bbe bless bthan brequired bfor ba bdwelling bunit. bThese breceptacles bcan bbe blocated bto
bbe bconvenient bfor bpermanent bfurniture blayout bbut bat bleast b_________receptacle
boutlets bshall bbe breadily baccessible. b- bcorrect banswer✔✔2
At bleast bone breceptacle boutlet bshall bbe binstalled bwithin b_______of bthe btop bof ba
bshow bwindow bfor beach b12 blinear bfeet bmeasured bhorizontally bacross bits blength. b-
bcorrect banswer✔✔18"
A b125 bV bsingle bphase b15 bor b20 bamp brated breceptacle boutlet bshall bbe binstalled bat
ban baccessible blocation bfor bthe bservicing bof bheating bair-conditioning band
brefrigeration bequipment bthe breceptacle bshall bbe blocated bon bthe bsame blevel band
bwithin b_______of bthe bheating bair-conditioning band brefrigeration bequipment bthe
breceptacle boutlet bshall bnot bbe bconnected bto bthe bload bside bof bthe bequipment
bdisconnecting bmeans. b- bcorrect banswer✔✔25 bfeet
Permanently binstalled belectric bbaseboard bheaters bequipped bwith bfactory binstall
breceptacle boutlets bor boutlets bprovided bas ba bseparate bassembly bby bthe
bmanufacturer bshall bbe bpermitted bas bthe brequired boutlet bor boutlets bfor bthe bwall
bspace butilized bby bsuch bpermanently binstalled bheaters bsuch breceptacle boutlets
b__________be bconnected bto bthe bheater bcircuits. b- bcorrect banswer✔✔Shall bnot
Where ba brange, bcounter bmounted bcooking bunit bor bsink bis binstalled bin ban bisland bor
bpeninsula bcountertop band bthe bwidth bof bthe bcountertop bbehind bthe brange, bcounter
bmounted bcooking bunit bor bsink bis bless bthan b________the brange, bcounter bmounted
bcooking bunit bor bsink bis bconsidered bdivide bthe bcountertop bspace binto btwo bseparate
bcountertop bspaces. b- bcorrect banswer✔✔12"
QUESTIONS AND ANSWERS
neutral bpoint b- bcorrect banswer✔✔The bcommon bpoint bon ba bwye-connection bin ba
bpolyphase bsystem bor bmidpoint bon ba bsingle bphase, b3-wire bsystem, bor bmidpoint bof
ba bsingle bphase bportion bof ba b3-phase bdelta bsystem, bor ba bmidpoint bof ba b3-wire,
bdirect bcurrent bsystem
In bthe bNEC bthe bwords b___________indicate ba bmandatory brequirement b- bcorrect
banswer✔✔Shall bor bshall bnot
On ba bfour bwire bDelta bconnected bsystem bwith ba bmidpoint bof bone bphase bwinding bis
bgrounded, bonly bthe bconductor bor bbus bbar bhaving ba bhigher bphase bvoltage bthe
bground bshall bbe bdurably band bpermanently bmarked bby ban bouter bfinish bthat bis
b_______ bin bcolor bor bby bother beffective bmeans. bSuch bIdentification bshall bbe
bplaced bat beach bpoint bon bthe bsystem bwhere bconnection bis bmade bif bthe bgrounded
bconductor bis balso bpresent. b- bcorrect banswer✔✔Orange
The brequired bworking bspace bfor baccess bto blive bparts boperating bat b300 bV bto
bground, bwhere bthere bare bexposed blive bparts bon bone bside band bgrounded bparts bon
bthe bother bside bis b____________. b- bcorrect banswer✔✔3 bfeet b6 binches
The bdimensions bof bworking bspace bfor baccess bto blive bparts boperating bat b300 bV,
bnominal bto bground, bwhere bthere bare bexpose blive bparts bon bboth bsides bof bthe
bworkspace bis________________. b- bcorrect banswer✔✔4 bfeet
110.26 bA1- bDead bfront bassemblies bworking bspace b- bcorrect banswer✔✔30" bfor
bnon-electrical bparts
36" bfor belectrical bparts
The bworking bspace bin bfront bof bthe belectrical bequipment bshall bnot bbe bless bthan
b_______wide, bor bof bthe bwidth bof bthe bequipment, bwhichever bis bgreater. b- bcorrect
banswer✔✔30"
Large bequipment b- bcorrect banswer✔✔1200 bA bor bgreater band bover b6 bfeet bwide
,Large bequipment bmeans bof begress b- bcorrect banswer✔✔Two bmeans bof begress b24"
bwide bby b6.5 bfeet btall bunless bthe bfollowing bcondutions bare bmet b
1) bunobstructed begress
2) bDouble bthe bworkspace
Headroom bshall bnot bbe bless bthan b_______. b- bcorrect banswer✔✔6.5 bfeet bor bthe
bheight bof bthe bequipment
Live bparts bof belectrical bequipment boperating bat b______volts bor bmore bshe'll bbe
bguarded bagainst baccidental bcontact bor bapproved benclosures bor bby bany bof bthe
bfollowing bmeans b- bcorrect banswer✔✔50 bvolts b
4) bby belevation bof b8 bfeet bor bmore babove bthe bfloor bor bother bworking bsurface
A bfence bshall bnot bbe bless bthan b______feet bin bheight b- bcorrect banswer✔✔8 bfeet
One bentrance bto benclosures bfor belectrical binstallations bas bdescribed bin b110.31 bnot
bless bthan b_______wide band b_________high bshall bbe bprovided bto bgive baccess bto
bthe bworking bspace baround bthe belectrical bequipment b- bcorrect banswer✔✔30 binches
band b6.5 bfeet
Network bcompartments bshall bhave bat bleast b________means bof baccess. bEach bdoor
bshe'll bhave ban baccess bthat bleads bto ba blegal bexit. b- bcorrect banswer✔✔Two
Where brear baccess bis brequired bto bwork bon bdeenergized bparts bon bthe bback bof
benclosed bequipment ba bminimum bworking bspace bof b__________horizontally bshall
bbe bprovided b- bcorrect banswer✔✔30 binches
All bnon-current bcarrying bmetal bparts bof belectrical bequipment band ball bmetal
braceways band bcable bshall bbe bsolidly bgrounded band bbonded bto ball bmetal bpipes bin
brails bat bthe bportal band bthe bintervals bnot bexceeding b_____________throughout bthe
btunnel. b- bcorrect banswer✔✔1000 bfeet
Manhole bworkspace bfor bcabling-A bclear bworkspace bnot bless bthan b_______wide
bshall bbe bprovided bwere bcables bare blocated bon bboth bsides band bnot bless bthan
b_______were bcables bare bonly bon bone bside. b- bcorrect banswer✔✔3 bfeet b
2-1/2 bfeet
Access bto bmanhole bdimensions. bRectangular baccess bopenings bshall bnot bbe bless
bthan b_______. bRound baccess bopenings bin ba bmanhole bshall bbe bnot bless bthan
b______inches bin bdiameter b- bcorrect banswer✔✔26" bx b22"
26"
Manhole bopenings bfor bpersonnel bshall bbe blocated bwhere bthey bare bnot bdirectly
babove belectrical bequipment bor bconductors bin bthe benclosure. bWhere bthis bis bnot
,bpracticeable beither ba b________or ba b_______shall bbe bprovided. b- bcorrect
banswer✔✔Protective bbarrier bof bfixed bladder
And binsulated bgrounded bconductor bof b_____or bsmaller bshall bbe bidentified bby ba
bcontinuous bwhite bor bgray bouter bfinish bor bby bthree bcontinuous bwhite bstripes bon
bother bthan bgreen binsulation balong bits bentire blength. b- bcorrect banswer✔✔6 bawg
Manhole bcovers bshall bbe bover b______pounds bor botherwise bdesignated bto brequire
bthe buse bof btools bto bopen. b- bcorrect banswer✔✔100 bpounds
The bgrounded bconductors bof bother bsystems bshall bhave ba bdifferent bouter bcovering
bconforming bto b200.6A bor b200.6B bor bby ban bouter bcovering bof b______or
b_______with ba breadily bdistinguishable bcolored bstripe bother bthan bgreen brunning
balong bthe binsulation b- bcorrect banswer✔✔White bor bgray
Where bconductors bof bdifferent bsystems bare binstalled bin bthe bsame brace bway, bone
bsystem bshe'll bhave ba bneutral bhaving ban bouter bcovering bof bwhite bor bnatural bgray
band beach bother bsystem bhaving ba bneutral bshall bhave ban banother bcovering bof b-
bcorrect banswer✔✔White bwith bcolored bStripe bother bthan bgreen bor bdistinguish bby
bother bsuitable bapproved bmeans
For bscrew bshell bdevices bwith battach bleads bthe bconductor battached bto bthe bscrew
bshell bshall bhave ba b_______or b________finish. b- bcorrect banswer✔✔White bor bgray
In baddition bto bthe bnumber bof bbranch bcircuits brequired bby bother bparts bof bthe
bsection b_______or bmore b20 bA bsmall bappliance bbranch bcircuits bshall bbe bprovided
bfor ball breceptacle boutlets bspecified bby b210.52B. b- bcorrect banswer✔✔Two
An bindividual bbranch bcircuit bshall bbe bprovided bfor beach b_________receptacle
brequired bby b210.52 bI. b- bcorrect banswer✔✔Air-Conditioning
Branch bcircuits brequired bin ba bdwelling bunit. b- bcorrect banswer✔✔1) bsmall bappliance
bbranch bcircuit
2) blaundry bbranch bcircuit
3) bbathroom bbranch bcircuits
4) bAir-Conditioning b(NYC bAMEND)
The bmaximum bvoltage bdrop bon bbranch bcircuit bconductors bis b_________percent. b-
bcorrect banswer✔✔3% b
Overall b5%
The bmaximum bvoltage bdrop bon bfeeder bcircuits bis b________. b- bcorrect
banswer✔✔2%
Overall b5%
, Dwelling bunit bcircuits brunning bthrough banother bdwelling bunit bin bcommon bareas.
bWhat bpercentage bof bchange bwill brequire bit bto bbe bbrought bup bto bcurrent bcode? b-
bcorrect banswer✔✔50%
Receptacle boutlets bin bfloors bshall bnot bbe bcounted bas bpart bof bthe brequired bnumber
bof breceptacle boutlets bunless blocated bwithin b_________of bthe bwall. b- bcorrect
banswer✔✔18"
Outlets bmay bbe binstalled bin ba bdwelling bunit bfor bspecific bappliance bsuch bas blaundry
bequipment. bWhat bis bthe bmaximum bdistance ballowed bbetween bthis boutlet band bthe
bappliance? b- bcorrect banswer✔✔6 bfeet
A breceptacle bconnected bto bone bof bthe bdwelling bunit bsmall bappliance bbranch
bcircuits bcan bbe bused bto bsupply ba(n) b__________in bany bof bthe brooms bspecified bin
b210.52B1. b- bcorrect banswer✔✔Electric bclock
How bmany breceptacles bare brequired bwithin bthe bperimeter bof ba bbalcony, bdeck bor
bporch bwith ba busable barea bof bless bthan b20 bft.² b- bcorrect banswer✔✔1
The bnumber bof breceptacle boutlets bfor bguest brooms bin bhotels band bmotels bshall bnot
bbe bless bthan brequired bfor ba bdwelling bunit. bThese breceptacles bcan bbe blocated bto
bbe bconvenient bfor bpermanent bfurniture blayout bbut bat bleast b_________receptacle
boutlets bshall bbe breadily baccessible. b- bcorrect banswer✔✔2
At bleast bone breceptacle boutlet bshall bbe binstalled bwithin b_______of bthe btop bof ba
bshow bwindow bfor beach b12 blinear bfeet bmeasured bhorizontally bacross bits blength. b-
bcorrect banswer✔✔18"
A b125 bV bsingle bphase b15 bor b20 bamp brated breceptacle boutlet bshall bbe binstalled bat
ban baccessible blocation bfor bthe bservicing bof bheating bair-conditioning band
brefrigeration bequipment bthe breceptacle bshall bbe blocated bon bthe bsame blevel band
bwithin b_______of bthe bheating bair-conditioning band brefrigeration bequipment bthe
breceptacle boutlet bshall bnot bbe bconnected bto bthe bload bside bof bthe bequipment
bdisconnecting bmeans. b- bcorrect banswer✔✔25 bfeet
Permanently binstalled belectric bbaseboard bheaters bequipped bwith bfactory binstall
breceptacle boutlets bor boutlets bprovided bas ba bseparate bassembly bby bthe
bmanufacturer bshall bbe bpermitted bas bthe brequired boutlet bor boutlets bfor bthe bwall
bspace butilized bby bsuch bpermanently binstalled bheaters bsuch breceptacle boutlets
b__________be bconnected bto bthe bheater bcircuits. b- bcorrect banswer✔✔Shall bnot
Where ba brange, bcounter bmounted bcooking bunit bor bsink bis binstalled bin ban bisland bor
bpeninsula bcountertop band bthe bwidth bof bthe bcountertop bbehind bthe brange, bcounter
bmounted bcooking bunit bor bsink bis bless bthan b________the brange, bcounter bmounted
bcooking bunit bor bsink bis bconsidered bdivide bthe bcountertop bspace binto btwo bseparate
bcountertop bspaces. b- bcorrect banswer✔✔12"
