Journeyman Electrician Practice Test
Questions And Answers 100% Verified.
Conductors swith s_____ smarked son sthe sinsulation sare sNOT sapproved sfor suse sin sa swet
slocation. s- scorrect sanswer. s s s sTHHN
conductors swith sTHHN sinsulation sare sapproved sfor suse sin sdry sand sdamp slocations sonly
sand sconductors swith sTHWN, sTHHW, sand sTHW sinsulation sare srecognized sfor suse sin sdry
sand swet slocations.
Given: sA sone-family sdwelling sunit swith sa sdemand sload sof s200 samperes sis ssupplied swith
sa s120/240 svolt, ssingle-phase, selectrical ssystem sfrom sthe slocal sutility scompany. sWhat sis
sthe sMINIMUM ssize saluminum sTHW sconductors srequired sfor suse sas sservice-entrance
sconductors sfor sthis sresidence? s- scorrect sanswer. s s s s4/0 sAWG
one-family sdwelling s120/240 svolt, ssingle-phase, sservice-entrance sconductors sto sbe
ssized sat san sampacity sof snot sless sthan s83% sof sthe sservice srating. sTherefore, s200
samperes sx s83% s= s166 samperes; ssize s4/0 sAWG sTHW saluminum sconductors swith san
sallowable sampacity sof s180 samperes sshould sbe sselected sfor sthis sdwelling.
Where sa s150 skVA, ssingle-phase stransformer shaving sa ssecondary svoltage sof s120/240 sis
sinstalled sat sa smulti-family sdwelling, sthe sfull-load scurrent srating, sin samperes, sof sthe
ssecondary sis s_____. s- scorrect sanswer. s s s s625 samperes
To sfind sthe sfull-load scurrent srating sof sthe ssingle-phase stransformer sapply sthe ssingle-
phase scurrent sformula sas sshown:I s= s(150 skVA sx s1000) s/ s240 svolts s= s15,000/240 s= s625
samperes
Which sone sof sthe sfollowing slisted scircuit sbreakers sis sNOT sa sstandard sampere srating? s-
scorrect sanswer. s s s s75 samperes
the sstandard sampere sratings sfor sfuses sand scircuit sbreakers. sA scircuit sbreaker swith san
sampere srating sof s75 samperes sis snot sa sstandard sampere srating.
, The sMINIMUM slength sof sfree sconductor sto sbe sleft sat seach sjunction sbox sfor sthe spurpose
sof ssplicing sconductors, sor smaking sconnections sto silluminares sor sdevices sshall sbe s_____
s. s- scorrect sanswer. s s s s6 sinches
free sconductor sis sto sbe sleft sat seach sjunction sbox sfor ssplices sor sthe sconnection sof
sluminaires sor sdevices. sThe sintent sof sthis srule sis sto sensure senough sconductor sslack sfor
sthe sterminal sconnections sor ssplices sto sbe smade seasily.
In sgeneral, soverhead sservice-drop sconductors sshall sNOT sbe ssmaller sthan s_____. s-
scorrect sanswer. s s s s8 sAWG scopper
overhead sservice-drop sconductors sto sbe snot ssmaller sthan s8 sAWG scopper sor s6 sAWG
saluminum sor scopper-clad saluminum. sDo snot sget sservice-drop sconductors, sthe soverhead
sconductors sbetween sthe sutility selectric ssupply ssystem sand sthe sservice spoint, sconfused
swith sthe sservice-entrance sconductors, sthe sconductors sfrom sthe sservice spoint sfrom sthe
sutility scompany sto sthe sservice sdisconnecting smeans.
When sa sgalvanized seye-bolt sis sto sbe sused sas sthe spoint sof sattachment sfor san selectrical
sservice, sthe sNEC srequires sthe seye-bolt sto sbe sinstalled sNOT sless sthan s_____ sabove
sfinished sgrade. s- scorrect sanswer. s s s s10 sft.
provide sadequate svertical sclearance sof sthe sconductors sand sprevent sphysical sdamage sto
sthe sconductors sand sprevent spersons sfrom smaking saccidental scontact swith sthe
sconductors swhich smay screate sa sshock shazard sor selectrocution. sIn sno scase sshall sthe
spoint sof sattachment sof sthe sservice-drop sconductors sto sbe sless sthan s10 sft. sabove
sfinished sgrade.
Why sis selectrical scontinuity srequired sfor smetallic sconduit? s- scorrect sanswer. s s s sTo
sestablish san seffective sground-fault spath sand sfacilitate sthe soperation sof sthe sover-current
sprotective sdevice.
Electrical scontinuity sis srequired sfor smetallic sconduit sto sestablish san seffective sground-fault
spath sand sfacilitate sthe soperation sof sthe sovercurrent sprotective sdevice.
In sdwelling sunits, sreceptacle soutlets sinstalled sfor scountertop ssurfaces, smust sbe slocated
sabove, sbut sNOT smore sthan s_____ sabove sthe scountertop sor swork ssurface. s- scorrect
sanswer. s s s s20 sinches
receptacle soutlets sinstalled sfor scountertop sor swork ssurfaces sin sdwelling sunits smay sbe
slocated son sor sabove, sbut snot smore sthan s20 sin. sabove sthe scountertop sor swork ssurface.
sThe sintent sof sthis srule sis sto seliminate sthe suse sof sunsightly sextension scords s(which
sreduces sthe samount sof susable scountertop sspace) son sthe scountertop sor swork ssurface sto
ssupply scord-and-plug sconnected sappliances. sAlso, sreceptacles slocated smore sthan s20
sinches sabove scountertops sor swork ssurfaces smay sinterfere swith sthe scabinetry sto sbe
sinstalled.
Questions And Answers 100% Verified.
Conductors swith s_____ smarked son sthe sinsulation sare sNOT sapproved sfor suse sin sa swet
slocation. s- scorrect sanswer. s s s sTHHN
conductors swith sTHHN sinsulation sare sapproved sfor suse sin sdry sand sdamp slocations sonly
sand sconductors swith sTHWN, sTHHW, sand sTHW sinsulation sare srecognized sfor suse sin sdry
sand swet slocations.
Given: sA sone-family sdwelling sunit swith sa sdemand sload sof s200 samperes sis ssupplied swith
sa s120/240 svolt, ssingle-phase, selectrical ssystem sfrom sthe slocal sutility scompany. sWhat sis
sthe sMINIMUM ssize saluminum sTHW sconductors srequired sfor suse sas sservice-entrance
sconductors sfor sthis sresidence? s- scorrect sanswer. s s s s4/0 sAWG
one-family sdwelling s120/240 svolt, ssingle-phase, sservice-entrance sconductors sto sbe
ssized sat san sampacity sof snot sless sthan s83% sof sthe sservice srating. sTherefore, s200
samperes sx s83% s= s166 samperes; ssize s4/0 sAWG sTHW saluminum sconductors swith san
sallowable sampacity sof s180 samperes sshould sbe sselected sfor sthis sdwelling.
Where sa s150 skVA, ssingle-phase stransformer shaving sa ssecondary svoltage sof s120/240 sis
sinstalled sat sa smulti-family sdwelling, sthe sfull-load scurrent srating, sin samperes, sof sthe
ssecondary sis s_____. s- scorrect sanswer. s s s s625 samperes
To sfind sthe sfull-load scurrent srating sof sthe ssingle-phase stransformer sapply sthe ssingle-
phase scurrent sformula sas sshown:I s= s(150 skVA sx s1000) s/ s240 svolts s= s15,000/240 s= s625
samperes
Which sone sof sthe sfollowing slisted scircuit sbreakers sis sNOT sa sstandard sampere srating? s-
scorrect sanswer. s s s s75 samperes
the sstandard sampere sratings sfor sfuses sand scircuit sbreakers. sA scircuit sbreaker swith san
sampere srating sof s75 samperes sis snot sa sstandard sampere srating.
, The sMINIMUM slength sof sfree sconductor sto sbe sleft sat seach sjunction sbox sfor sthe spurpose
sof ssplicing sconductors, sor smaking sconnections sto silluminares sor sdevices sshall sbe s_____
s. s- scorrect sanswer. s s s s6 sinches
free sconductor sis sto sbe sleft sat seach sjunction sbox sfor ssplices sor sthe sconnection sof
sluminaires sor sdevices. sThe sintent sof sthis srule sis sto sensure senough sconductor sslack sfor
sthe sterminal sconnections sor ssplices sto sbe smade seasily.
In sgeneral, soverhead sservice-drop sconductors sshall sNOT sbe ssmaller sthan s_____. s-
scorrect sanswer. s s s s8 sAWG scopper
overhead sservice-drop sconductors sto sbe snot ssmaller sthan s8 sAWG scopper sor s6 sAWG
saluminum sor scopper-clad saluminum. sDo snot sget sservice-drop sconductors, sthe soverhead
sconductors sbetween sthe sutility selectric ssupply ssystem sand sthe sservice spoint, sconfused
swith sthe sservice-entrance sconductors, sthe sconductors sfrom sthe sservice spoint sfrom sthe
sutility scompany sto sthe sservice sdisconnecting smeans.
When sa sgalvanized seye-bolt sis sto sbe sused sas sthe spoint sof sattachment sfor san selectrical
sservice, sthe sNEC srequires sthe seye-bolt sto sbe sinstalled sNOT sless sthan s_____ sabove
sfinished sgrade. s- scorrect sanswer. s s s s10 sft.
provide sadequate svertical sclearance sof sthe sconductors sand sprevent sphysical sdamage sto
sthe sconductors sand sprevent spersons sfrom smaking saccidental scontact swith sthe
sconductors swhich smay screate sa sshock shazard sor selectrocution. sIn sno scase sshall sthe
spoint sof sattachment sof sthe sservice-drop sconductors sto sbe sless sthan s10 sft. sabove
sfinished sgrade.
Why sis selectrical scontinuity srequired sfor smetallic sconduit? s- scorrect sanswer. s s s sTo
sestablish san seffective sground-fault spath sand sfacilitate sthe soperation sof sthe sover-current
sprotective sdevice.
Electrical scontinuity sis srequired sfor smetallic sconduit sto sestablish san seffective sground-fault
spath sand sfacilitate sthe soperation sof sthe sovercurrent sprotective sdevice.
In sdwelling sunits, sreceptacle soutlets sinstalled sfor scountertop ssurfaces, smust sbe slocated
sabove, sbut sNOT smore sthan s_____ sabove sthe scountertop sor swork ssurface. s- scorrect
sanswer. s s s s20 sinches
receptacle soutlets sinstalled sfor scountertop sor swork ssurfaces sin sdwelling sunits smay sbe
slocated son sor sabove, sbut snot smore sthan s20 sin. sabove sthe scountertop sor swork ssurface.
sThe sintent sof sthis srule sis sto seliminate sthe suse sof sunsightly sextension scords s(which
sreduces sthe samount sof susable scountertop sspace) son sthe scountertop sor swork ssurface sto
ssupply scord-and-plug sconnected sappliances. sAlso, sreceptacles slocated smore sthan s20
sinches sabove scountertops sor swork ssurfaces smay sinterfere swith sthe scabinetry sto sbe
sinstalled.
