Exam (elaborations)
26401-20 - Load Calculations Feeders and Services Exam Questions And Accurate Answers Graded A+
- Course
- Institution
26401-20 - Load Calculations Feeders and Services Exam Questions And Accurate Answers Graded A+...
[Show more]
Content preview
26401-20 - Load Calculations Feeders and Services Exam QuestionsAnd Accurate Answers Graded A+
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 the loads supplied as continuous duty? - Answer 215.2(A)(1)(a)
Which NEC article discusses the adjustment factors for above 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 traverse? - Answer 310.15(B)(1)
Which article of the NEC addresses the non-compulsory requirement of upsizing
conductor size when voltage drop over 3% for feeders and over 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, in what table in the code book would you find conductor
resistance? - Answer NEC Chapter 9, Table 8
In what NEC table can you find allowable ampacities for insulated conductors which are
rated up to and including 2,000V - Answer 310.16
How do you calculate the load center length? Answer Multiply each tap load by its
physical routing distance from the supply add product of these together and divide them
by sum of the individual loads (total load I) producing load centre length (L)
What do you do when sizing amperage of a circuit but the wire is rated at 75 degree C and
the lugs are rated at 60 degree C? - Answer Size ampacity off the 60-degree column
If a feeder is rated at _____ the 60-degree rating for the feeder conductor is used unless
all feeder components are rated higher temperature. - Answer Less than or equal to 100A
I = VA/V What does the formula above calculate? Answer Feeder ampacity for a
single-phase circuit
I = VA/ (VX1.732) What does the above formula calculate? Answer Feeder ampacity of a
3-phase circuit
VA, if known in KW what is it multiplied by? -Answer 1,000
If overcurrent protection is installed where on the tap conductor is it? -Answer Ahead of
the point of supply
Which of the following is TRUE with respect to the 10' tap rule? - Answer Tap conductors
cannot extend beyond the switchboard, panelboard or control device it supplies
Which of the following is TRUE with respect to the 25' tap rule - Answer Must be rated no
less than 1/3 the capacity of the device protecting the feeder
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Easton. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
72349 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now