Load calculation Feeders and services Level 4 Module 1 Exam
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questions with verified detailed solutions || || || ||
What is the demand factor allowed by the NEC® for calculating the neutral conductor size for
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electric range load? - ✔✔70% || || || ||
Using the VA/linear foot method, the total VA that must be used in a service calculation for a
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50' show window is - ✔✔12,500VA
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Before it is considered a continuous load, a load must operate for at least how many hours
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without interruption? - ✔✔3 || || ||
Which of the following factors does not affect conductor ampacity adjustments? -
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✔✔Number of phase || ||
If a continuous connected load totals 120A, what is the minimum current-carrying capacity
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required for the feeder? - ✔✔150A || || || || ||
What is the load center length for a tapped feeder with loads of 120A at 50', 110A at 60', 75A at
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90', and 70A at 150'? - ✔✔79.60
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Which of the following lighting loads would be used in a residence that is 1,650 sq ft? -
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✔✔4,950VA
What is the load for 40 non-dwelling unit receptacles? (Assume that the load is not
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continuous.) - ✔✔7,200VA || ||
The minimum service rating for a residential service is - ✔✔100A
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questions with verified detailed solutions || || || ||
What is the demand factor allowed by the NEC® for calculating the neutral conductor size for
|| || || || || || || || || || || || || || || ||
electric range load? - ✔✔70% || || || ||
Using the VA/linear foot method, the total VA that must be used in a service calculation for a
|| || || || || || || || || || || || || || || || || ||
50' show window is - ✔✔12,500VA
|| || || || ||
Before it is considered a continuous load, a load must operate for at least how many hours
|| || || || || || || || || || || || || || || || ||
without interruption? - ✔✔3 || || ||
Which of the following factors does not affect conductor ampacity adjustments? -
|| || || || || || || || || || || ||
✔✔Number of phase || ||
If a continuous connected load totals 120A, what is the minimum current-carrying capacity
|| || || || || || || || || || || || ||
required for the feeder? - ✔✔150A || || || || ||
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'? - ✔✔79.60
|| || || || || ||
Which of the following lighting loads would be used in a residence that is 1,650 sq ft? -
|| || || || || || || || || || || || || || || || || ||
✔✔4,950VA
What is the load for 40 non-dwelling unit receptacles? (Assume that the load is not
|| || || || || || || || || || || || || || ||
continuous.) - ✔✔7,200VA || ||
The minimum service rating for a residential service is - ✔✔100A
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