Question 12010 of 731 · Texas Journeyman Electrician Exam
How many 20 A, 120 V general lighting branch circuits are required at minimum for a 3,400 ft2 dwelling under the NEC 2026?
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 12010
- B: 5
Explanation
Circuit count uses 3 VA per ft2 (120.13): 3,400 x 3 = 10,200 VA. A 20 A, 120 V circuit supplies 2,400 VA, and 10,200 / 2,400 = 4.25, so 5 circuits are needed (always round up). Small-appliance and laundry circuits are in addition.
More questions: Load Calculations
- 12011Under the NEC 2026, what is the feeder demand load for four 5.5 kW household electric dryers in an apartment building?
- 12012Five 5 kW household dryers are supplied by one feeder. What is the calculated dryer load under the NEC 2026?
- 12013Ten 5 kW electric dryers in a multifamily building are on one service. Using the NEC 2026 dryer demand factors, what is the dryer load?
- 12014Under the NEC 2026, what is the demand factor for 15 household electric dryers on one feeder?
- 12015A dwelling has one electric dryer rated 4,400 W. What load must be used for it in the NEC 2026 service calculation?
- 12016Standard method (NEC 2026): a dwelling has a 1,500 VA dishwasher, 1,000 VA disposal, 4,500 W water heater and 800 VA microwave, all fastened in place. What is the demand load for these appliances?