Question 12116 of 749 · Maryland Journeyperson Electrician Exam
How many 20 A, 120 V general lighting branch circuits are required at minimum for a 2,700 ft2 dwelling under the NEC 2020 or 2023?
Exactly one answer is correct.
You got of questions right. Here on the question pages nobody remembers which ones you got wrong. The trainer saves your progress and asks the mistakes again until they stick.
Or free: the 10 questions most people get wrong
Show solution
Correct answer to question 12116
- D: 4
Explanation
2,700 ft2 x 3 VA = 8,100 VA (Table 220.12 in 2020, 220.41 in 2023). Each 20 A, 120 V circuit supplies 2,400 VA: 8,100 / 2,400 = 3.38, so 4 circuits. Small-appliance and laundry circuits are extra.
More questions: Load Calculations
- 12118Standard method (NEC 2020/2023): the only fastened-in-place appliances are a 1,000 VA dishwasher, an 800 VA disposal and a 4,000 W water heater. What appliance load goes into the calculation?
- 12119Standard method (NEC 2020/2023): a dwelling has a 1,200 VA dishwasher, 700 VA disposal, 5,500 W water heater, 1,000 VA microwave and 600 VA attic fan, all fastened in place. What is the appliance demand load?
- 12021Using the standard method under the NEC 2020/2023, what general lighting load must be included in the service calculation for a one-family dwelling with 2,400 ft2 of livable floor area?
- 12022A 2,000 ft2 dwelling has the minimum two small-appliance circuits and one laundry circuit. Under the NEC 2020/2023 standard method, what is the demand load for general lighting, small-appliance and laundry loads combined?
- 12023A 3,200 ft2 one-family dwelling has three 20 A small-appliance circuits and one laundry circuit. Under the NEC 2020/2023 standard method, what is the net demand load for these loads plus general lighting?
- 12024Under the NEC 2020/2023 standard method, what is the demand load for general lighting, two small-appliance circuits and one laundry circuit in a 4,500 ft2 dwelling?