Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Textbook Question
Chapter 26, Problem 17R
Circle the correct answer from the following statements:
- a. Conductors for fire alarm systems are not permitted to be installed in the same raceways, cables, or electrical boxes as the light and power conductors.
- b. It is permissible to install fire alarm conductors in the same raceways, cables, or electrical boxes as the light and power conductors because the conductors for fire alarm systems covered in Article 760 are small and would easily fit into other electrical raceways and boxes.
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5. Which of the following descriptions of a ground ring is correct?A. A ground ring is a circular formation that's made up of six or more grounding electrodes.B. A ground ring is a coiled conductor that's buried underneath a utility pole.C. A ground ring is a device that's used to clamp a conductor to a water pipe.D. A ground ring is a bare copper conductor that will encircle an entire structure underground.
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.
This is done to ensure that no
potential difference can
appear between any of
exposed metal parts of
electrical and non-electrical
installations under fault
conditions.
a. Earthing & Bonding
b. Bonding only
c. Earthing only
d. Either bonding or
earthing
Chapter 26 Solutions
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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- 20.a. What's the primary disadvantage of using copper conductors?A. DurabilityB. CostC. AvailabilityD. Weight20.b. The NEC requires that each service-disconnecting means be suitable forA. hazardous locations.B. disconnecting the meter.C. wet conditions.D. the prevailing conditions 20.c. As a general rule, each building or structure is limited to a single service. What's an automatic exceptionto this rule?A. A second service deemed suitable for useB. A second service having the proper markingsC. Emergency systems or fire pumpsD. Higher building occupancyarrow_forwardBuilding Service Subjectarrow_forwardc.1. Which of the following is one of the three essential functions of an equipment grounding conductor?A. Provide an arc-fault current pathB. Establish groundingC. Establish bondingD. Ensure the system is groundedc.2. What's another name for the three-point method of Earth resistance testing?A. Fall-of-potentialB. Line surgeC. Spatial shieldingD. Leakage current c.3. If the National Electrical Code provides a requirement to ground equipment, it generally implies thatthere will be a direct connection to the Earth of a connection through a/anA. grounding electrode conductor.B. equipment grounding conductor.C. equipotential bonding conductor.D. bonding conductor.arrow_forward
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- Low-voltage conductors. a. are not powerful enough to cause death from electrocution b. must exceed 480V to cause death C. are responsible for most electrocution deaths due to the frequency of contact d. are unlikely to cause injury if rubber-soled shoes are wornarrow_forward19. Which of the following statements about securing and protecting grounding electrode conductors istrue? A. Grounding electrode conductors should not be installed on or run through wood framing members.B. Grounding electrode conductors aren't required to comply with burial depths.C. There's no acceptable method to splice grounding electrode conductors together.D. The electrical worker is typically responsible for judging whether a grounding electrode conductor is exposed to potentialdamage.arrow_forward5 a) Discuss Electricity power generation and distribution to residential properties. b) with diagrams explain how a Distribution Board is wired to provide electricity to a residential property. c) Explain the following materials and Accessories. i. Male and female bushings. ii male and female adaptors iii. Couplings. iv. Wire/cable sizes and their usarrow_forward
- Training is required for: Qualified electricians only. Only those workers who work on or near exposed energized parts. Both those workers who work on or near exposed energized parts and those who do not. None of the above. a. b. C. d. Workers who are designated as "unqualified:" Do not need any training. Must become "qualified" within one year. a. b. Must not operate electrically powered equipment. Must be trained in safety-related work practices. C. d. Workers who are designated as "qualified." Work on or near exposed energized parts. a. b. Must be trained to distinguish exposed live parts from other parts of electrical equipment. Must be trained to determine the nominal voltage of exposed live parts. C. d. All of the above. Protect yourself from electrical hazards by: Leaving covers off of electrical panels to make inspection a. easier. Wearing specialized personal protective equipment as needed. Pulling fuses instead of locking out during repairs. d. Removing the ground prong from…arrow_forwardof p o How many conductors enter the ceiling fan/light wall box? Switch ond out let boxes s tirst 10. What type and size of box may be used for the ceiling fan/light wall box?. 11. What type of covers are used with 4 in. square outlet boxes? 12. a. Does the circuit for the Master Bedroom have a grounded circuit conductor? b. Does it have an equipment grounding conductor? c. Explain the difference between a "grounded" conductor and an "equipment grounding" conductor. 13. Approximately how many feet (meters) of 2-wire cable and 3-wire cable are needed to ft complete the circuit supplying the Master Bedroom? Two-wire cable: ft (- m). m). Three-wire cable: 14. If the cable is laid in notches in the corner studs, what protection for the cable must be provided? 15. How high are the receptacles mounted above the finished floor in this bedroom? 16. Approximately how far from the bedroom door is the first receptacle mounted? (See the plans.) 17. What is the distance from the finished floor to…arrow_forwardPlease answer in typing formatarrow_forward
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