Question 12031 of 966 · Washington 01 Journey Level Electrician Exam
Under the NEC 2020/2023, what is the demand factor for 20 household electric dryers on one feeder?
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Correct answer to question 12031
- C: 38 %
Explanation
For 12 to 23 dryers the factor is 47 % minus 1 % for each dryer above 11 (220.54 and Table 220.54). 20 dryers are 9 above 11, so 47 - 9 = 38 %.
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?
- 12079Under the NEC 2020 or 2023, what is the feeder load for 3 household electric dryers rated 5,000 W each?
- 12080Under the NEC 2020 or 2023, what is the feeder load for 6 household electric dryers rated 6,000 W each?
- 12081Under the NEC 2020 or 2023, what is the feeder load for 7 household electric dryers rated 5,000 W each?
- 12083Six 12 kW ranges are on one apartment feeder. What range demand load applies under the NEC 2020 or 2023?
- 12084Using NEC 2020/2023 Table 220.55 Column C, what is the demand for twelve 12 kW ranges?