Exam (elaborations)
Residential Wiring Midterm Exam Term 3 Questions and Answers
- Course
- Institution
Residential Wiring Midterm Exam Term 3
[Show more]
Content preview
Residential Wiring Midterm Exam Term 31. A 20-ampere branch circuit requires _____ AWG conductors, ignoring the effects of
voltage drop.
a. 14 aluminum
b. 14 copper
c. 12 copper
d. 12 aluminum - Answer -12 copper
2. A continuous load shall not exceed _____ of the rating of the branch circuit.
a. 125%
b. 100%
c. 50%
d. 80% - Answer -80%
3. A dual-rated conductor marked THHN/THWN is rated_____ when used in dry
locations.
a. 30°C (86°F)
b. 90°C (194°F)
c. 60°C (140°F)
d. 75°C (167°F) - Answer -90°C
4. A receptacle outlet is _____.
a. a contact device
b. an outlet where one or more receptacles are installed
c. both a and b
d. an outlet intended for the connection of a utilization device - Answer -an outlet where
one or more receptacles are installed.
5. According to _____, unused knockouts and other openings in electrical boxes and
cabinets are required to be closed.
a. both b and c
b. NEC 110.12(A)
c. NEC 408.7
d. Article 100 - Answer -Both b and c
, 6. All of the following terms of electrical equipment are devices,except for a _____.
A. lamp
B. three-way switch
C. receptacle
D. disconnect switch - Answer -A. Lamp
7. An arch flash can produce temperatures of _____F°
a. 3,500
b. 35,000
c. 15,000
d. 25,000 - Answer -35000
8. Article 210 applies to branch circuits, but branch-circuit calculations are covered in
_____.
a. article 230
b. article 220
c. article 250
d. article 240 - Answer -Article 220
9. As defined in Article 100, a dwelling unit has the following feature(s):_____.
a. living, sleeping, basement or storage area
b. none of the above
c. space for eating, sleeping, and recreation
d. permitted provisions for living, sleeping, cooking, and sanitation - Answer -permanent
provisions for living, sleeping, cooking, and sanitation
10. Branch circuit conductors shall have an ampacity _____ the maximum to be served.
a. not less than
b. 125% greater than - Answer -not less than
11. Conductor sizes up through 4/0 AWG are expressed in American Wire Gauge
(AWG). Conductor sizes larger than 4/0 AWG are expressed in _____.
a. kcmil
b. diameter
c. radians
d. metric units - Answer -kcmil
12. Device faceplates must be mounted so as to _____.
a. both b and c
b. seat against the wall surface
c. be parallel to lines in tiles and similar wall finishes
d. cover the opening in the wall - Answer -both b and c
13. Devices are equipment whose primary function is to carry current, not ____.
a. provide over current protection
b. serve a grounding function
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 millyphilip. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
62890 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
