Electrical Level 3 Module 1 Load
Calculations And Branch Feeder Circuits
Questions And Answers.
According mto mthe mNEC®, mthe mampacity mof mbranch mcircuit mconductors mmust mbe mderated
mwhen mthere mare mmore mthan mhow mmany mcurrent-carrying mconductors min ma mraceway? m-
mcorrect manswer. m m m m3
Air mconditioning movercurrent mprotective mdevices mcan mnever mexceed mwhat mpercentage
mof mthe mmotor-rated mload mcurrent mor mthe mbranch mcircuit mselection mcurrent m(whichever mis
mgreater)? m- mcorrect manswer. m m m m225%
Conductors mmust mbe mderated mwhen minstalled min mconduit m- mcorrect manswer. m m m mon mor
mabove mrooftops
Continuous mloads mare mcalculated mat mwhat mpercentage mof mthe mmaximum mcurrent mrating
mof mthe movercurrent mdevice? m- mcorrect manswer. m m m m80%
For ma mgiven mload mand mlength, mthe mbranch mcircuit mvoltage mdrop mshould mnot mexceed m-
mcorrect manswer. m m m m3%
For mresistance mwelders, mthe mrating mfor mthe movercurrent mprotection mdevice mshould mnot
mexceed mwhat mpercentage mof mthe mprimary mcurrent mrating mof mthe mwelder? m- mcorrect
manswer. m m m m300%
Show mwindow mlighting mis mcalculated mat m200VA mper mlinear mfoot mplus m- mcorrect manswer. m
m m m125%
The mallowable mampacity mfor meleven mNo. m12 mTHHN mcopper mconductors min ma mcable
mmust mbe madjusted mby m - mcorrect manswer. m m m m50%
The mload mfor m10' mof mmulti-outlet massembly mused mto msupply mseveral mloads
msimultaneously mis m- mcorrect manswer. m m m m1,800VA
Calculations And Branch Feeder Circuits
Questions And Answers.
According mto mthe mNEC®, mthe mampacity mof mbranch mcircuit mconductors mmust mbe mderated
mwhen mthere mare mmore mthan mhow mmany mcurrent-carrying mconductors min ma mraceway? m-
mcorrect manswer. m m m m3
Air mconditioning movercurrent mprotective mdevices mcan mnever mexceed mwhat mpercentage
mof mthe mmotor-rated mload mcurrent mor mthe mbranch mcircuit mselection mcurrent m(whichever mis
mgreater)? m- mcorrect manswer. m m m m225%
Conductors mmust mbe mderated mwhen minstalled min mconduit m- mcorrect manswer. m m m mon mor
mabove mrooftops
Continuous mloads mare mcalculated mat mwhat mpercentage mof mthe mmaximum mcurrent mrating
mof mthe movercurrent mdevice? m- mcorrect manswer. m m m m80%
For ma mgiven mload mand mlength, mthe mbranch mcircuit mvoltage mdrop mshould mnot mexceed m-
mcorrect manswer. m m m m3%
For mresistance mwelders, mthe mrating mfor mthe movercurrent mprotection mdevice mshould mnot
mexceed mwhat mpercentage mof mthe mprimary mcurrent mrating mof mthe mwelder? m- mcorrect
manswer. m m m m300%
Show mwindow mlighting mis mcalculated mat m200VA mper mlinear mfoot mplus m- mcorrect manswer. m
m m m125%
The mallowable mampacity mfor meleven mNo. m12 mTHHN mcopper mconductors min ma mcable
mmust mbe madjusted mby m - mcorrect manswer. m m m m50%
The mload mfor m10' mof mmulti-outlet massembly mused mto msupply mseveral mloads
msimultaneously mis m- mcorrect manswer. m m m m1,800VA
