Load calculation Feeders and services Level 4
Module 1 Exam Questions And Answers
What is the demand factor allowed by the NEC® for calculating the
neutral conductor size for electric range load? -
correct answer ✅70%
Using the VA/linear foot method, the total VA that must be used in
a service calculation for a 50' show window is -
correct answer ✅12,500VA
Before it is considered a continuous load, a load must operate for at
least how many hours without interruption? -
correct answer ✅3
Which of the following factors does not affect conductor ampacity
adjustments? -
correct answer ✅Number of phase
If a continuous connected load totals 120A, what is the minimum
current-carrying capacity required for the feeder? -
correct answer ✅150A
, Load calculation Feeders and services Level 4
Module 1 Exam Questions And Answers
What is the load center length for a tapped feeder with loads of
120A at 50', 110A at 60', 75A at 90', and 70A at 150'? -
correct answer ✅79.60
Which of the following lighting loads would be used in a residence
that is 1,650 sq ft? -
correct answer ✅4,950VA
What is the load for 40 non-dwelling unit receptacles? (Assume
that the load is not continuous.) -
correct answer ✅7,200VA
The minimum service rating for a residential service is -
correct answer ✅100A
Residential small appliance circuit must be rated at -
correct answer ✅1,500VA
Use of the 100' tap rule is limited to installation in high-bay
manufacturing buildings with wall heignt over -
correct answer ✅35 feet
Module 1 Exam Questions And Answers
What is the demand factor allowed by the NEC® for calculating the
neutral conductor size for electric range load? -
correct answer ✅70%
Using the VA/linear foot method, the total VA that must be used in
a service calculation for a 50' show window is -
correct answer ✅12,500VA
Before it is considered a continuous load, a load must operate for at
least how many hours without interruption? -
correct answer ✅3
Which of the following factors does not affect conductor ampacity
adjustments? -
correct answer ✅Number of phase
If a continuous connected load totals 120A, what is the minimum
current-carrying capacity required for the feeder? -
correct answer ✅150A
, Load calculation Feeders and services Level 4
Module 1 Exam Questions And Answers
What is the load center length for a tapped feeder with loads of
120A at 50', 110A at 60', 75A at 90', and 70A at 150'? -
correct answer ✅79.60
Which of the following lighting loads would be used in a residence
that is 1,650 sq ft? -
correct answer ✅4,950VA
What is the load for 40 non-dwelling unit receptacles? (Assume
that the load is not continuous.) -
correct answer ✅7,200VA
The minimum service rating for a residential service is -
correct answer ✅100A
Residential small appliance circuit must be rated at -
correct answer ✅1,500VA
Use of the 100' tap rule is limited to installation in high-bay
manufacturing buildings with wall heignt over -
correct answer ✅35 feet
