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LOAD CALCULATION FEE DERS AND
SERVICES LEVEL 4 MOD ULE 1 |
QUESTIONS WITH 100% CORRECT
ANSWERS | VERIFIED | LATEST
UPDATE
Question :What is the demand factor allowed by the NEC®
for calculating the neutral conductor size for electric range load?
Correct answer:70%
Question :Using the VA/linear foot method, the total VA that
must be used in a service calculation for a 50' show window is
Correct answer:12,500VA
Question :Before it is considered a continuous load, a load
must operate for at least how many hours without interruption?
Correct answer:3
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Question :Which of the following factors does not affect
conductor ampacity adjustments?
Correct answer:Number of phase
Question :If a continuous connected load totals 120A, what is
the minimum current-carrying capacity required for the feeder?
Correct answer:150A
Question :What is the load center length for a tapped feeder
with loads of 120A at 50', 110A at 60', 75A at 90', and 70A at 150'?
Correct answer:79.60
Question :Which of the following lighting loads would be
used in a residence that is 1,650 sq ft?
Correct answer:4,950VA
Question :What is the load for 40 non-dwelling unit
receptacles? (Assume that the load is not continuous.)
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Correct answer:7,200VA
Question :The minimum service rating for a residential
service is
Correct answer:100A
Question :Residential small appliance circuit must be rated at
Correct answer:1,500VA
Question :Use of the 100' tap rule is limited to installation in
high-bay manufacturing buildings with wall heignt over
Correct answer:35 feet
Question :Which part of a residential lighting and small
appliance load must be rated at 35% for service calculations?
Correct answer:The next 177,000VA
Question :If a store lighting load is 14,000VA (continuous),
which of the following must be used for the circuit calculation?
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Correct answer:17,500VA
Question :In most cases, feeder conductor size is adjusted
when
Correct answer:there are more than three current-carrying
conductors in the raceway
Question :When calculating the service requirement for a
particular building, the step is to
Correct answer:determine the floor area of the building
Question :What is the feeder ampacity for a three-phase,
120/208V subpanel with a connected load of 84,563VA?
Correct answer:235A
Question :An optional method for determining feeder to
schools is covered in