Electrical Level 3 Module 1 Load
Calculations and Branch Feeder Circuits
questions with correct answers
According mmto mmthe mmNEC®, mmthe mmampacity mmof mmbranch mmcircuit mmconductors
mmmust mmbe mmderated mmwhen mmthere mmare mmmore mmthan mmhow mmmany mmcurrent-
carrying mmconductors mmin mma mmraceway? mm- mmANS-3
Air mmconditioning mmovercurrent mmprotective mmdevices mmcan mmnever mmexceed
mmwhat mmpercentage mmof mmthe mmmotor-rated mmload mmcurrent mmor mmthe mmbranch
mmcircuit mmselection mmcurrent mm(whichever mmis mmgreater)? mm- mmANS-225%
Conductors mmmust mmbe mmderated mmwhen mminstalled mmin mmconduit mm- mmANS-on
mmor mmabove mmrooftops
Continuous mmloads mmare mmcalculated mmat mmwhat mmpercentage mmof mmthe
mmmaximum mmcurrent mmrating mmof mmthe mmovercurrent mmdevice? mm- mmANS-80%
For mma mmgiven mmload mmand mmlength, mmthe mmbranch mmcircuit mmvoltage mmdrop
mmshould mmnot mmexceed mm- mmANS-3%
For mmresistance mmwelders, mmthe mmrating mmfor mmthe mmovercurrent mmprotection
mmdevice mmshould mmnot mmexceed mmwhat mmpercentage mmof mmthe mmprimary
mmcurrent mmrating mmof mmthe mmwelder? mm- mmANS-300%
Show mmwindow mmlighting mmis mmcalculated mmat mm200VA mmper mmlinear mmfoot mmplus
mm- mmANS-125%
The mmallowable mmampacity mmfor mmeleven mmNo. mm12 mmTHHN mmcopper
mmconductors mmin mma mmcable mmmust mmbe mmadjusted mmby mm- mmANS-50%
The mmload mmfor mm10' mmof mmmulti-outlet mmassembly mmused mmto mmsupply mmseveral
mmloads mmsimultaneously mmis mm- mmANS-1,800VA
The mmmaximum mmsize mmdual-element mmfuse mmfor mma mm40hp, mm3Ø, mm460V
mmmotor mmwith mma mmDesign mmLetter mmD mmis mm- mmANS-100A
Calculations and Branch Feeder Circuits
questions with correct answers
According mmto mmthe mmNEC®, mmthe mmampacity mmof mmbranch mmcircuit mmconductors
mmmust mmbe mmderated mmwhen mmthere mmare mmmore mmthan mmhow mmmany mmcurrent-
carrying mmconductors mmin mma mmraceway? mm- mmANS-3
Air mmconditioning mmovercurrent mmprotective mmdevices mmcan mmnever mmexceed
mmwhat mmpercentage mmof mmthe mmmotor-rated mmload mmcurrent mmor mmthe mmbranch
mmcircuit mmselection mmcurrent mm(whichever mmis mmgreater)? mm- mmANS-225%
Conductors mmmust mmbe mmderated mmwhen mminstalled mmin mmconduit mm- mmANS-on
mmor mmabove mmrooftops
Continuous mmloads mmare mmcalculated mmat mmwhat mmpercentage mmof mmthe
mmmaximum mmcurrent mmrating mmof mmthe mmovercurrent mmdevice? mm- mmANS-80%
For mma mmgiven mmload mmand mmlength, mmthe mmbranch mmcircuit mmvoltage mmdrop
mmshould mmnot mmexceed mm- mmANS-3%
For mmresistance mmwelders, mmthe mmrating mmfor mmthe mmovercurrent mmprotection
mmdevice mmshould mmnot mmexceed mmwhat mmpercentage mmof mmthe mmprimary
mmcurrent mmrating mmof mmthe mmwelder? mm- mmANS-300%
Show mmwindow mmlighting mmis mmcalculated mmat mm200VA mmper mmlinear mmfoot mmplus
mm- mmANS-125%
The mmallowable mmampacity mmfor mmeleven mmNo. mm12 mmTHHN mmcopper
mmconductors mmin mma mmcable mmmust mmbe mmadjusted mmby mm- mmANS-50%
The mmload mmfor mm10' mmof mmmulti-outlet mmassembly mmused mmto mmsupply mmseveral
mmloads mmsimultaneously mmis mm- mmANS-1,800VA
The mmmaximum mmsize mmdual-element mmfuse mmfor mma mm40hp, mm3Ø, mm460V
mmmotor mmwith mma mmDesign mmLetter mmD mmis mm- mmANS-100A
