Question 1: A 1600 sq.ft dwelling unit has 16 receptacles and 15 luminaries rated 100 W each, what is the general lighting load of dwelling unit?
- 4800 Volt-Ampere
- 1600 Volt-Ampere
- 3200 Volt-Ampere
NEC Reference: NEC 220.12
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NEC 2023
Dwelling Unit Calculations Practice Quiz - 1
Free Online Practice Test on Single Family Dwelling Unit calculations - 1
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Student Reviews 5.0 / 5 · 2 reviews
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Will Nguyen
Load calculations always tripped me up on practice tests elsewhere. The way this one breaks down dwelling unit calcs step by step in the explanations actually made it click for me. Highly recommend for anyone struggling with Article 220.
W
Will Nguyen
Load calculations always tripped me up on practice tests elsewhere. The way this one breaks down dwelling unit calcs step by step in the explanations actually made it click for me. Highly recommend for anyone struggling with Article 220.
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Dwelling Unit Calculations Practice Quiz - 1 — Question List
Question 2: A quick recovery electric heater is rated 5600 watts 240 volts. What rating of circuit breaker is required for protecting it?
- 25 ampere
- 20 ampere
- 23.3 ampere
- 30 ampere
NEC Reference: NEC 240.6
Question 3: The total connected load of dwelling unit is 11000 VA , what is the calculated demand load?
- 3150 VA
- 11000 VA
- 9000 VA
- 6000 VA
NEC Reference: NEC 240.42
Question 4: Determine the feeder demand for a 230 volts dwelling unit consists of Air-conditioning unit FLC (full load current) of 30 amperes and 3 heat circuit of each 3KW ?
- 9000 watts
- 6900 volt-amperes
- 15900 volt-amperes
NEC Reference: NEC 220.82(C)
Question 5: A dwelling unit has four appliances fastened in place with each power rating of 800 VA. what is the demand load appliances?
- 2240 VA
- 3200 VA
- 1600 VA
- 800 VA
Question 6: What is the minimum load of household Electric cloth dryer in a dwelling unit?
- 5000 Volt-ampere
- 1500 Volt-ampere
- 3000 volt-ampere
NEC Reference: NEC 220.54
Question 7: The dwelling unit consists of 5 electric cloth dryers, what is the demand load calculated ?
- 21250 VA
- 25000 VA
- 5000 VA
NEC Reference: NEC 220.54
Question 8: What is calculated demand load for a 15 unit apartment with each apartment has a 900 sq ft area?
- 39750 VA
- 108000 VA
- 7200 VA
NEC Reference: NEC 220.42
Question 9: A 8 unit multifamily dwelling unit has an 5 KW electric dryer in each unit. What is total dryer demand load for building service or feeder?
- 24 KW
- 40 KW
- 20 KW
- 30 KW
NEC Reference: NEC 220.54
Question 10: A 3 phase 120/230 Volts Multifamily dwelling building has a total demand load of 220 KVA, What is the minimum size of service conductor that can be used for building?
- 600 kcmil Aluminum Wire per phase
- 500 kcmil Aluminum Wire per phase
- 550 kcmil Aluminum Wire per phase
- 400 kcmil Aluminum Wire per phase
NEC Reference: NEC 310.15(B)(7)
Load calculations always tripped me up on practice tests elsewhere. The way this one breaks down dwelling unit calcs step by step in the explanations actually made it click for me. Highly recommend for anyone struggling with Article 220.
Load calculations always tripped me up on practice tests elsewhere. The way this one breaks down dwelling unit calcs step by step in the explanations actually made it click for me. Highly recommend for anyone struggling with Article 220.