ELECTRICAL WIRING:RESIDENT.-TEXT (PB)
19th Edition
ISBN: 9781337116213
Author: MULLIN
Publisher: CENGAGE L
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Chapter 10, Problem 5R
Exposed non-current-carrying metallic parts of electrical equipment must be grounded if installed within _______________ ft (______________ m) vertically or ____________ ft (______________ m) horizontally of bathtubs, plumbing fixtures, pipes, or other grounded metal work or grounded surfaces.
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Grounding Lighting Fixtures. There are specific requirements for grounding lighting fixtures. How must they be grounded and with what size conductors? Be sure and cite the code in your answers.
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Explain the relevance of earthing and bonding in an electrical Installation.
Chapter 10 Solutions
ELECTRICAL WIRING:RESIDENT.-TEXT (PB)
Ch. 10 - Prob. 1RCh. 10 - There is a 3-way switch in the bedroom hallway...Ch. 10 - What wattage was used for each vanity luminaire to...Ch. 10 - What is the current draw for the answer given in...Ch. 10 - Exposed non-current-carrying metallic parts of...Ch. 10 - What color are the faceplates in the bathrooms?...Ch. 10 - Prob. 7RCh. 10 - a. The NEC in Section _______________ requires...Ch. 10 - Hanging luminaires must be kept at least...Ch. 10 - The following is a layout of a lighting circuit...
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- Electrical plants Define the terms "Main column ." " Line ." " Protection earth " and " Operating eartharrow_forwardGrounding lighting fixtures. Threre are specific requirements for grounding lighting fixtures. How must they be grounded and with what size conductors?arrow_forwardNeed all detailed information and answers. What are three main reasons to install grounds and bonds on an isolated circuit before work is started? When using protective grounds, does the application of the grounding principle control current or voltage? Does all the current in a grounded conductor take the easiest path to earth? What is the bonding principle? When removing protective grounds on an isolated circuit, which set of grounds is more likely to create an arc, the first set or the second set?arrow_forward
- The ohms per 1000 feet measurements for conductors can be found in _____. Select one: a. article 100 definitions b. 310.15(B)(16) c. annex C d. chapter 9 Table 8arrow_forwardDefine cable rating in a built environmentarrow_forward1.1 PV modules can be wired together in an array using ______ connections to increase voltage. a. Terminating b. Series c. Parallel d. AC 1.2 A PV module, also called a solar panel, is comprised of individual photovoltaic _______ wired and mounted together as an integrated unit. a. Capsules b. Compartments c. Chips d. Cells 1.3 A __________ system uses a storage system that stores the generated electricity so it can provide during times when the system’s panels are not receiving solar energy. a. Direct coupled b. Self regulating c. Charge controlled d. Indirectly connected 1. 4 __________ energy may have the potential to supply all of the world's energy needs, but at this time, it provides a very small percentage. a. Coal b. Natural Gas c. Diesel d. Solararrow_forward
- 12. Which of the following statements about ground faults is true?A. They can happen if a conductive tool is dropped in an energized equipment's electrical enclosure.B. They usually occur between any grounded circuit conductor and the equipment grounding conductor.C. They can't result from human error.D. They're often normal and typically intentional.arrow_forwardConnectors marked ____ are suitable for use with aluminum, copper, or copper-clad conductors? 1. CO-ALR only 2. AL/CU only 3. UL 9 4. CO-ALR and AL/CU What is the correct answer? Why?arrow_forwardIf the NEC provides a requirement to grounding equipment, it generally implies that there will be a direct connection to Earth of connection through a/an A. Equipment grounding conductor B. Bonding conductor C. Grounding electrode conductor D. Equipotential bonding conductorarrow_forward
- What do you call device/tool used for measuring the galvanization or coating of grounding and tower materials?arrow_forwardWhich term is synonymous with short-circuit current rating? A. Fuse rating b. Fault rating c. Withstand rating d. Breaker ratingarrow_forward___________ is an Area on a device characteristic where the ratio between applied voltage and resulting current is constant.arrow_forward
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