26401-20 - Load Calculations: Feeders and
Services. Exam Questions With
Correct Answers.
What NEC Article covers feeder circuits? - answer✔NEC Article 215
The conductors and equipment for delivering electric energy from the serving utility to the
wiring system of the premises served is a? - answer✔Service
The overhead conductors between the utility electric supply system and the service point is
_____? - answer✔Service drop
What sections make up electrical Calculations? - answer✔Feeders, Services, & Branch Circuits
What NEC Article covers loads being supplied as continuous duty? - answer✔215.2(A)(1)(a)
Which NEC article discusses adjustment factors for more than 3 current carrying conductors in a
raceway? - answer✔310.15(C)(1)
Which NEC article discusses the correction factors for the ambient temperature the conductors
will pass through? - answer✔310.15(B)(1)
Which NEC article discusses the not mandatory rule of increasing conductor size when voltage
drop exceeds 3% for feeders and 5% for combination feeder & branch circuits? -
answer✔215.2(A)(1)(b) Informational Note No. 2
A continuous duty load is a load that operates without interruption for more than ______hours
straight? - answer✔3
When figuring voltage drop, where do you find conductor resistance in the code book? -
answer✔NEC Chapter 9, Table 8
Which NEC table lists allowable ampacities for insulated conductors rated up to and including
2,000V - answer✔310.16
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