Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Textbook Question
Chapter 1, Problem 6R
What phrase is used when a substitution is permitted for a specific item? __________
__________________________________________
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______________1. It checks the ability or range of operations of the electronic components that be run in the system.
______________2. It assesses the ability of the electronic components to exchange information or can access data without any restriction.
______________3. It evaluates the ability of the part to meet the functional, mechanical, and electrical performance requirements.
Mandatory rules in the NEC® contain the language ____.
Select one:
A. "PENALTIES FOR NONCOMPLIANCE"
B. "SHALL" OR "SHALL NOT"
C. "MUST" OR "MUST NOT"
D. "SUGGESTED BUT DISCRETIONARY"
Find the value of unknown.
2:5 —___:15
Chapter 1 Solutions
Electrical Wiring Residential
Ch. 1 - What is the purpose of specifications?Ch. 1 - Refer to the specifications in the back of this...Ch. 1 - What is done to prevent a plan from becoming...Ch. 1 - Name three requirements contained in the...Ch. 1 - Prob. 5RCh. 1 - What phrase is used when a substitution is...Ch. 1 - What is the purpose of an electrical symbol?...Ch. 1 - Prob. 8RCh. 1 - Prob. 9RCh. 1 - What three parties must be satisfied with the...
Ch. 1 - Prob. 12RCh. 1 - Prob. 13RCh. 1 - Does the NEC provide minimum or maximum standards?...Ch. 1 - What do the letters UL signify?Ch. 1 - What section of the NEC states that all listed or...Ch. 1 - Prob. 17RCh. 1 - Prob. 18RCh. 1 - Does compliance with the NEC always result in an...Ch. 1 - Name two nationally recognized testing...Ch. 1 - Prob. 21RCh. 1 - Prob. 23RCh. 1 - A junction box on a piece of European equipment is...Ch. 1 - Prob. 25RCh. 1 - You will learn in Chapter 3 that residential...Ch. 1 - Prob. 27RCh. 1 - What can you do to reduce or eliminate the...Ch. 1 - What is the NEC definition of a qualified person?Ch. 1 - Are low-voltage systems totally safe? Explain.Ch. 1 - Prob. 32RCh. 1 - What do the letters PPE stand for?...Ch. 1 - Prob. 34RCh. 1 - Where might you obtain information about...Ch. 1 - Prob. 36R
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- ______________1. It is the ability of an electronic part to meet the required performance specifications in its life cycle application environment for a specified period. ______________2. It evaluates the performance and operating specifications of electronic components within the set standards. ______________3. It is the ability to detect and assess the errors in the system.arrow_forwardWith the top view as the reference, the current going out of the page is ________ while the current going into the page is ________.arrow_forward*************************SUBJECT = SIGNALS AND SYSTEMS***********************arrow_forward
- 6. According to the NEC, allowance for the future expansion of installations isA. an exception.B. in everyone's best interest.C. defined.D. a requirement.arrow_forwardThe ________parameters may not reflect the actual operating conditions but simply provide an indication of the level of each parameter to expect for general use. a.hybrid-pi b.hybrid c.pi d.rearrow_forwardThe circuit breaker cubicles illustrated in your reading material each contain____circuit breakers. A. Two B. Three C. Four D. Sixarrow_forward
- Part 2: Analysis and selection of the Wind Turbine. The team decides at install a 30 MW wind farm. The turbine that has been selected by the local contractor is an Enercon wind turbine. The specifications of all the available Enercon wind turbine is shown in the attached datasheet. 1. Decide on the required number of wind turbines needed. 2. In your own words, explain what the Betz limit for wind turbines means.arrow_forward3. The term "listed" means that ____. Select one: A. EQUIPMENT OR MATERIAL MUST CONTINUE TO COMPLY WITH THE APPROPRIATE STANDARDS (OR PERFORMANCE) UNDER WHICH THE LABELING WAS GRANTED B. EQUIPMENT OR MATERIAL IS LISTED FOR SALE BY GENERAL OR SUBCONTRACTORS C. EQUIPMENT, MATERIALS, OR SERVICES MEET APPROPRIATE DESIGNATED STANDARDS OR HAVE BEEN TESTED AND FOUND SUITABLE FOR A SPECIFIED PURPOSE D. EQUIPMENT OR MATERIAL COMPLIES WITH DISCRETIONARY STANDARDS AS LISTED IN THE NEC®arrow_forwardPlease include references with the answersarrow_forward
- 4.a. The ___ calculated load is rarely placed on an electrical system.A. optionalB. standardC. total 4.b. What's the primary disadvantage of using copper conductors?A. CostB. AvailabilityC. Weight 4.c. You're evaluating the components of a multioccupancy building that won't have an on-site employee. Tobe compliant with the NEC, each occupant will need to have access to their ownA. service-disconnecting means.B. service conductor.C. cable attachment point.D. emergency fire water-pump disconnect.arrow_forward1)The NEC Style Manual indicates that if a term in the NEC appears in more than two articles, it qualifies for a definition in which of the following. a) The articles where the term appears b) Article 90 c) Article 100 d) Table of Contents 2)Definitions of terms related to grounding and bonding and used only in Article 250 are located in ________.a) Article 100 b) Article 200 c) Chapter 9 d) Section 250.2 3)As a general rule, when installing ground rod electrodes, two must be installed always unless a single ground rod provides not more than 25 ohms’ resistance to ground. a) True b) Falsearrow_forwardThe instrument used to make drawings to scale is called a(n) ____ scale.arrow_forward
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