EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Textbook Question
Chapter 26, Problem 8R
Circle the correct answer from the following statements:
- a. Smoke alarms installed in new one- and two-family homes must be interconnected so that if any one of them is triggered, all other alarms will also sound off.
- b. Smoke alarms installed in new one- and two-family homes are not permitted to be interconnected so that each alarm will operate independently of all other alarms in the home.
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1- What is done to prevent a plan from becoming confusing because of too much detail?
2. Does compliance with the NEC always result in an electrical installation that is adequate, safe, and efficient? Why?
3. Name two nationally recognized testing laboratories.
4- Are low-voltage systems totally safe? Explain
5- Explain briefly what an arc flash is
6- Where might you obtain information about on-the-job safety and safety training?
Question 3:
Suppose an engineer designed a fire alarm system for a large warehouse, with multiple
pushbutton switches connected to a single alarm siren:
Siren
Actuating any of the normally-open switches results in the alarm sounding. So far, so good.
Now, suppose that one of the wires connecting one side of several switches to the rest of
the circuit breaks open. What will the result of this failure be?
Siren
break!
2. When working on a high - voltage system , it is best to keep anyone who is not part of the ser vice away from you and the car by creating a buffer zone around the car . Technician A makes sure the outside edges of the zone are at least one foot away from the car . Technician B places B orange cones to define the outer boundaries of the zone. Who is correct ?
Chapter 26 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 26 - In your own words, explain the terms alarm and...Ch. 26 - The requirements for household fire alarm systems...Ch. 26 - Do heat alarms and carbon monoxide alarms take the...Ch. 26 - Name two basic ways that smoke alarms are powered.Ch. 26 - Name the two types of smoke alarms.Ch. 26 - List the absolute minimum level of smoke alarm...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Prob. 10R
Ch. 26 - Prob. 11RCh. 26 - An important but often overlooked requirement in...Ch. 26 - Carbon monoxide is ____________, and is...Ch. 26 - Circle the correct answer from the following...Ch. 26 - The wiring of more complex household fire alarm...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Fire alarm cable generally used in more complex...Ch. 26 - When installing a fire alarm system or a complete...Ch. 26 - Residential sprinkler fire protection systems are...
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- Circle the correct answer from the following statements: a. Always connect a fire alarm circuit or system to a power supply that has ground-fault circuit interrupter (GFCI) protection. b. Never connect a fire alarm circuit or system to a power supply that has ground-fault circuit interrupter (GFCI) protection. c. It makes no difference whether the branch circuit is GFCI or AFCI protected because the alarms are required to have battery backup power. In the event of a loss of power for whatever reason, the alarms would still be operative.arrow_forwardList the rooms and/or areas in a newly constructed single-family residence where arc-fault circuit-interrupter (AFCI) protection is required by the NEC.arrow_forwardThe requirements for household fire alarm systems are found in what NFPA Code and in what chapter of this Code?arrow_forward
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- The protective devices, such as ground wires, lightning arrestors, circuit breakers, relays are used to: Select one: a. step up the voltage. O b. Protect equipment and devices of the power system. O c. None of the above O d. step down the voltage.arrow_forwardFour electricians are discussing wiring under raised floors in information technology equipment rooms. Electrician A says that wiring under the raised floor requires fire-resistant walls, floors, and ceilings between other occupancies. Electrician B says that wiring under the raised floor requires fire resistant halfway up the walls and floors between other occupancies. Electrician C says that the room must employ a disconnecting means that removes half of the power to all equipment in the room. Electrician D says that a disconnecting means isn't necessary for the room. Which of the following statements is correct? A. Electrician B is correct. B. Electrician D is correct. C. Electrician A is correct. D. Electrician C is correct.arrow_forwardAnswer 1-3arrow_forward
- List the absolute minimum level of smoke alarm protection in a new one-family dwelling.arrow_forward(b) An employee is working on a ladder and the ladder seems to collapse. The employee falls off the ladder and breaks arm. The investigation reveals the following details: • Employee had worked seven 12-hour shifts in a row. • Accident happened at end of shift. • Employee was standing on the top step of the ladder (an unsafe action). The employee was approximately 10 feet above floor level. No fall arrest or restraint system was used. • A ladder inspection policy is in place, but there is no evidence that the ladder has ever been inspected. Investigation reveals the ladder was damaged and did not provide a stable working platform in any environment. • Interview with the facility manager reveals that he did not inspect the ladder when it was due for inspection. He was aware that the ladder needed to be inspected. (i) Examine either accident investigation is required or not. (ii) Discover SIX (6) factors and possible causes affecting the incidences. (iii) Explain the root cause of the…arrow_forwardDo heat alarms and carbon monoxide alarms take the place of smoke alarms? Explain.arrow_forward
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