100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Electrical Level 4 Module 1 Questions With 100% Verified Complete Solution $7.39   Add to cart
Quickly navigate to
Preview
  2.  
  3. Electrical Level 4 Module 1
  4.  
  5. Electrical Level 4 Module 1

Exam (elaborations)

Electrical Level 4 Module 1 Questions With 100% Verified Complete Solution
 6 views  0 purchase
  • Course
  • Electrical Level 4 Module 1
  • Institution
  • Electrical Level 4 Module 1

Electrical Level 4 Module 1 Questions With 100% Verified Complete Solution Name one reason the current-carrying conductor size would be adjusted. There are more than three current-carrying conductors in a raceway per NEC Section 310.15(B)(3) Voltage drop rule of thumb (A) VD for feeders shoul...

[Show more]

Preview 1 out of 4  pages

Document information

  • January 20, 2024
  • 4
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

Subjects

  • electrical level 4 module 1 questions with 100 ve

Written for

  • Electrical Level 4 Module 1
All documents for this subject (3)

Seller

avatar-seller
NurseAdvocate

Reviews received

Content preview

Electrical Level 4 Module 1 Questions With 100%
Verified Complete Solution
Name one reason the current-carrying conductor size would be adjusted.
There are more than three current-carrying conductors in a raceway per NEC Section
310.15(B)(3)
Voltage drop rule of thumb (A)
VD for feeders should not exceed 3% to the farthest outlet and 5% for the combo of
feeders and branch circuits to the farthest outlet.
Voltage Drop rule of thumb (B)
When combined, the max VD allowed for the branch circuit is usually 3%, then VD
allowed for feeder can be no more than 2%.
What are the formulas to calculate VD for single-phase circuits with resistive
loads?
VD = 2xLxRxI/1,000 and VD = 2xLxKxI/CM
CM
Area of the conductor in circular mils
Continuous duty load
A load that operates without interruption for more than 3 hours straight
What is the adjusted ampacity for each of six No. 4/0 THHN copper current-
carrying conductors in a single conduit?
See NEC Table 310.15(B)(16) for ampacity and NEC Table 310.15(B)(3)(a) for adjusted
ampacity by 80%
1.732
The square root of 3
VD = square root 3xLxRxI/1,000
Formula for VD of a three-phase feeder with a noncontinuous load
I= VA/V x square root of 3 or I = VA/V x 1.732
Formula for balanced three-phase circuit feeder ampacity
When the overcurrent protection for a conductor is located at the load end
instead of at the supply side of a conductor

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 NurseAdvocate. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $7.39. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

79079 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$7.39
  • (0)
  Add to cart