Question 12008 of 931 · Texas Journeyman Electrician Exam
Standard method (NEC 2026), 120/240 V: 2,400 ft2 dwelling, two small-appliance and one laundry circuit, 1,200 VA dishwasher, 900 VA disposal, 4,500 W water heater, 1,000 VA trash compactor, 12 kW range, 5.5 kW dryer, 9 kW electric heat and 4,800 VA AC. What is the minimum calculated service load in amperes?
Exactly one answer is correct.
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Correct answer to question 12008
- D: 139.2 A
Explanation
Lighting/SA/laundry 9,300 VA with demand = 5,205 VA; four fixed appliances 7,600 VA x 75 % = 5,700 VA; range 8,000 VA; dryer 5,500 VA; heat 9,000 VA (AC omitted as noncoincident). Total 33,405 VA / 240 V = 139.2 A (Table 120.45, 120.53, Table 120.55).
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