Question 12027 of 749 · Maryland Journeyperson Electrician Exam
Optional method (NEC 2020/2023): a 1,500 ft2 dwelling with two small-appliance and one laundry circuit, a 10 kW range, 5 kW dryer and 4.5 kW water heater has six separately controlled 2 kW baseboard heaters and a 4,000 VA AC unit. What is the total calculated load?
Exactly one answer is correct.
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Correct answer to question 12027
- C: 22,200 VA
Explanation
General loads = 28,500 VA, so 10,000 VA + 40 % of 18,500 VA = 17,400 VA (220.82(B)). Four or more separately controlled heating units count at 40 %: 12,000 x 0.40 = 4,800 VA, which exceeds the 4,000 VA AC (220.82(C)). Total 22,200 VA.
More questions: Load Calculations
- 12032A dwelling has one electric dryer rated 3,800 W. What load must be used for it in the NEC 2020/2023 service calculation?
- 12089A dwelling feeder includes a 6.4 kW range demand. What neutral load is assigned to it under the NEC 2020 or 2023?
- 12090A 120/240 V service has a maximum unbalanced load of 280 A. What neutral load is used under the NEC 2020 or 2023?
- 12091Under the NEC 2020 or 2023, which load is left out of a dwelling neutral calculation?
- 12092Under the NEC 2020 or 2023, the optional method of 220.82 may be used for a single dwelling when the service or feeder is:
- 12093NEC 2020/2023 220.83(A): an existing 1,600 ft2 dwelling with two small-appliance and one laundry circuit, a 12 kW range, 5 kW dryer and 4.5 kW water heater gets no new heating or AC. What is the calculated load?