NEC Article 220 Branch Circuit, Feeder and
Service Load Calculations Exam Questions
And Answers
The requirements for calculating certain loads are found in article
220 of the national electrical code. Which of the following load
calculations are covered in this article?
A- Branch Circuit loads
B- Feeder Loads
C- service loads
D- All the above -
correct answer ✅D
When calculating branch circuits, feeders or service loads, you
should round the calculation to the nearest whole amp. What
voltage should be used when calculating for those loads?
A- Whatever voltage specified
B- 120, 12/240, 208y/120 or 240
C- 374, 480/277, 480 600y/347 or 600
D- all the above -
correct answer ✅D
, NEC Article 220 Branch Circuit, Feeder and
Service Load Calculations Exam Questions
And Answers
Which dimension should be used to calculate the floor area of a
building?
A- inside dimensions
B- outside dimensions
C- either A or B
D- Neither A nor B -
correct answer ✅B
At what HP can a motor be connected to a lighting circuit and still
be considered a "general lighting load"?
A- 1/8 hp
B- 1/4 hp
C- 1/2 hp
D- 1 hp -
correct answer ✅A
General use receptacles and outlets NOT for general Illumination in
all occupancies should be calculated according to article 220. 14 of
Service Load Calculations Exam Questions
And Answers
The requirements for calculating certain loads are found in article
220 of the national electrical code. Which of the following load
calculations are covered in this article?
A- Branch Circuit loads
B- Feeder Loads
C- service loads
D- All the above -
correct answer ✅D
When calculating branch circuits, feeders or service loads, you
should round the calculation to the nearest whole amp. What
voltage should be used when calculating for those loads?
A- Whatever voltage specified
B- 120, 12/240, 208y/120 or 240
C- 374, 480/277, 480 600y/347 or 600
D- all the above -
correct answer ✅D
, NEC Article 220 Branch Circuit, Feeder and
Service Load Calculations Exam Questions
And Answers
Which dimension should be used to calculate the floor area of a
building?
A- inside dimensions
B- outside dimensions
C- either A or B
D- Neither A nor B -
correct answer ✅B
At what HP can a motor be connected to a lighting circuit and still
be considered a "general lighting load"?
A- 1/8 hp
B- 1/4 hp
C- 1/2 hp
D- 1 hp -
correct answer ✅A
General use receptacles and outlets NOT for general Illumination in
all occupancies should be calculated according to article 220. 14 of
