Maryland Journeyperson Electrician Exam, Load Calculations: all 29 questions

All questions from the Load Calculations section for Maryland Journeyperson Electrician Exam, each with the correct answer.

• 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?
• 12025Optional method (NEC 2020/2023): a 2,000 ft2 dwelling has two small-appliance circuits, one laundry circuit, a 12 kW range, a 5 kW dryer, a 1,200 VA dishwasher and a 4,500 W water heater. What is the calculated general load (heating and AC excluded)?
• 12026Optional method (NEC 2020/2023), 120/240 V service: 1,800 ft2 dwelling, two small-appliance and one laundry circuit, 11 kW range, 5.5 kW dryer, 1,000 VA dishwasher, 800 VA disposal, 4 kW water heater, 6,000 VA central AC and 8 kW central electric furnace. What is the calculated load in amperes?
• 12027Optional method (NEC 2020/2023): a 1,500 ft2 dwelling with two small-appliance and one laundry circuit, a 10 kW range, 5 kW dryer and 4.5 kW water heater has six separately controlled 2 kW baseboard heaters and a 4,000 VA AC unit. What is the total calculated load?
• 12032A dwelling has one electric dryer rated 3,800 W. What load must be used for it in the NEC 2020/2023 service calculation?
• 12089A dwelling feeder includes a 6.4 kW range demand. What neutral load is assigned to it under the NEC 2020 or 2023?
• 12090A 120/240 V service has a maximum unbalanced load of 280 A. What neutral load is used under the NEC 2020 or 2023?
• 12091Under the NEC 2020 or 2023, which load is left out of a dwelling neutral calculation?
• 12092Under the NEC 2020 or 2023, the optional method of 220.82 may be used for a single dwelling when the service or feeder is:
• 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?
• 12095Under NEC 2020/2023 220.83, what portion of the existing general load is counted at 100 % before the 40 % factor applies?
• 12098Which is a condition for using the NEC 2020/2023 multifamily optional method of 220.84?
• 12099An existing 200 A service shows a 1-year maximum demand of 110 A. A 40 A load is added. Using NEC 2020/2023 220.87, what is the resulting calculated load?
• 12101Under NEC 2020/2023 220.60, a dwelling has 10 kW of electric heat and a 5,000 VA AC unit that do not run together. What load is used in the standard method?
• 12102An 8-unit building has 900 ft2 units, each with two small-appliance and one laundry circuit. What is the NEC 2020/2023 standard method demand for these loads?
• 12104A small store has 40 duplex receptacles. What receptacle load is used under the NEC 2020 or 2023?
• 12105A store has 45 ft of show window. What lighting load is required for the window under the NEC 2020 or 2023?
• 12106Under the NEC 2020 or 2023, a strip mall has three required sign outlets. What sign load is included?
• 12107What load is used for 60 ft of track lighting in a showroom under the NEC 2020 or 2023?
• 12108A 30 ft multioutlet assembly will have several appliances used at the same time. What load applies under the NEC 2020 or 2023?
• 12114Under the NEC 2020 or 2023, what load is calculated for each 2-wire laundry branch circuit in a dwelling?
• 12115Under the NEC 2020 or 2023, what is the minimum number of 15 A, 120 V general lighting branch circuits for a 3,100 ft2 dwelling?
• 12116How 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?
• 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?

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