Question 12088 of 938 · Maryland Journeyperson Electrician Exam
Four ranges on one feeder are rated 10, 12, 14 and 18 kW. Using NEC 2020/2023 Table 220.55 Note 2, what is the demand load?
Exactly one answer is correct.
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Correct answer to question 12088
- D: 18.7 kW
Explanation
Ranges under 12 kW count as 12 kW for averaging: (12 + 12 + 14 + 18) / 4 = 14 kW, which is 2 kW over 12, so and Column C for four ranges (17 kW) rises 10 %: 17 x 1.10 = 18.7 kW.
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- 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?
- 12094NEC 2020/2023 220.83(B): an existing 2,000 ft2 dwelling (two small-appliance and one laundry circuit, 11 kW range, 5.5 kW dryer) adds a 6,000 VA central AC. What is the calculated load?