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
Commercial 1 Wiring Final questions and correct answers (elaborations) with 100% accurate , verified , latest fully updated , 2024/2025 ,already passed , graded a+, complete solutions guarantee distinctions rationales| 5-star rating $7.99   Add to cart
Quickly navigate to
Preview
  2.  
  3. Commercial Construction
  4.  
  5. Commercial Construction

Exam (elaborations)

Commercial 1 Wiring Final questions and correct answers (elaborations) with 100% accurate , verified , latest fully updated , 2024/2025 ,already passed , graded a+, complete solutions guarantee distinctions rationales| 5-star rating
 6 views  0 purchase
  • Course
  • Commercial Construction
  • Institution
  • Commercial Construction

Commercial 1 Wiring Final questions and correct answers (elaborations) with 100% accurate , verified , latest fully updated , 2024/2025 ,already passed , graded a+, complete solutions guarantee distinctions rationales| 5-star rating

Preview 2 out of 15  pages

Document information

  • August 5, 2024
  • 15
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • commercial 1 wiring final questions and correct an

Written for

  • Commercial Construction
  • Commercial Construction

Seller

avatar-seller
AnswersCOM

Reviews received

Content preview

Commercial 1 Wiring Final
- ANS-The purpose of a(n) ____ device is to protect the circuit wiring and devices and to some
extent the equipment served by the circuit.

"Identified for through-wiring" - ANS-In general, the only conductors permitted to run into or
through a fixture body or integral junction box on a recessed fixture are those supplying that
fixture. Other conductors are permitted to run through the fixture body or outlet box only when
the lighting fixture is marked "____________________".

1 to 2 - ANS-An acceptable impedance for the grounding path associated with normal
equipment grounding for branch-circuit wiring is ____ ohms.

1-1/2 in. (38 mm) from - ANS-Fluorescent fixtures mounted on low-density cellulose fiberboard
must generally be mounted ____ the fiberboard surface.

1,200 Volt amperes 600 watts - ANS-Calculate the volt-amperes and watts of a 120-volt,
10-ampere motor at 50 percent power factor.

1,920 - ANS-The maximum volt-ampere loading permitted on a 20-ampere branch circuit with a
continuous load is ____ watts (volt-amperes).

10 - ANS-For hallways of ____________________ ft. or more in length, it is required to have at
least one receptacle outlet.

100 - ANS-Branch-circuit conductors are required to have an ampacity not less than ____
percent of the load to be served.

125 - ANS-NEC® 422.13 requires that the branch circuit overcurrent device and conductors for
a storage-type electric water heater with a capacity of 120 gallons (450 L) or less must be sized
at not less than ____ percent of the rating of the water heater.

125 - ANS-Several NEC® sections contain the requirement to size conductors and overcurrent
devices at 100 percent of the noncontinuous loads plus ____ percent of the continuous loads.

125 - ANS-When sizing conductors and overcurrent protection, you must take 100 percent of
the noncontinuous loads plus ____ percent of the continuous loads.

2-wire - ANS-Some portable appliances use double insulation in place of grounding to provide
shock protection to users. Double-insulated appliances normally have ____ power cords and
attachment plug caps.

, 20 - ANS-A washer-dryer rated for 4000 VA at 208Y/120 volts single-phase must have a
branch-circuit ampacity of at least ____ amperes.

208Y - ANS-Most large commercial buildings use two voltages: 480Y/277 volts and ____/120
volts.

225 - ANS-When a branch circuit supplies an air conditioning system that consists of a hermetic
motor-compressor and other loads, the circuit rating must not exceed ____ percent of the
hermetic motor load plus the sum of the additional loads.

24 - ANS-The switches used in the low-voltage remote-control system described in this chapter
operate on ____ volts.

24 in. (600 mm) - ANS-Receptacle outlets must be installed in any wall space ____ or more in
width.

25 - ANS-A washer-dryer is rated for 4000 VA at 208Y/120 volts single-phase. The overcurrent
protective device must be rated at least ____ amperes.

3 - ANS-For system voltages of 0 to 150 volts to ground, the minimum depth of working space is
____ ft under all three working space conditions.

3 ft (900 mm); 8 ft (2.5 m) - ANS-Ceiling-suspended paddle fans must not be located within a
zone measured ____ horizontally and ____ vertically from the top of the bathtub rim or top of a
shower stall threshold.

3-phase - ANS-Water heaters are available for commercial occupancies in many sizes and
voltages, and for both single and ____ supply.

30 - ANS-NEC® 408.36(A) stipulates that if the panelboard contains snap switches with a rating
of ____ amperes or less, the panelboard overcurrent protection is not permitted to exceed 200
amperes.

35,000 - ANS-On large electrical installations, an arc flash can generate temperatures of ____
degrees F.

4 - ANS-In the water heater circuit example in this chapter, the minimum size conductor, if all
terminals are rated 75 degrees Celsius or higher, is ____ AWG as the ampacity in NEC® Table
310.16 is 85 amperes.

- ANS-The suggested fan size for rooms up to 144 square feet is
____________________ inches, and the suggested fan size for rooms up to 500 square feet is
____________________ inches.

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 AnswersCOM. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $7.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

73918 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
$7.99
  • (0)
  Add to cart