Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Textbook Question
Chapter 3, Problem 17R
In a single-family dwelling, how is overcurrent protection for branch circuits required to be provided? See NEC 210.20. __________
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If two 115-volt loads were connectedin parallel with 240 volts, they would__________.a. burn dimlyb. immediately burn outc. burn correctlyd. none of the above
20. Ground-fault protection of equipment is required for large branch circuits of more than 150 volts to ground but not exceeding more than _______ volts phase-to-phase for each disconnect rated at or above 1000 amperes.
A. 400 B. 700 C. 1000 D. 600
The term "____" is defined in NEC® Article 100 as "connected to establish electrical continuity and conductivity."
Select one:
A. BENDED (BENDING)
B. BONDED (BONDING)
C. SHUNTED (SHUNTING)
D. GROUNDED (GROUNDING)
Chapter 3 Solutions
Electrical Wiring Residential
Ch. 3 - Prob. 1RCh. 3 - How are branch circuits rated? See NEC 210.3._____Ch. 3 - Prob. 3RCh. 3 - Prob. 4RCh. 3 - What spaces are not included in the floor area...Ch. 3 - What is the unit load per square foot for dwelling...Ch. 3 - According to NEC 210.50(C), a laundry equipment...Ch. 3 - How is the total load in volt-amperes for lighting...Ch. 3 - How is the total lighting load in amperes...Ch. 3 - How is the required number of branch circuits...
Ch. 3 - What is the minimum number of 15-ampere lighting...Ch. 3 - How many lighting branch circuits are provided in...Ch. 3 - Prob. 13RCh. 3 - How is the load determined for outlets supplying...Ch. 3 - What type of circuits must be provided for...Ch. 3 - Prob. 16RCh. 3 - In a single-family dwelling, how is overcurrent...Ch. 3 - Prob. 18RCh. 3 - The minimum number of outdoor receptacles for a...Ch. 3 - The Code indicates the rooms in a dwelling that...Ch. 3 - Prob. 21RCh. 3 - Prob. 22RCh. 3 - Prob. 23RCh. 3 - Prob. 24RCh. 3 - Prob. 25RCh. 3 - Although the Code contains many exceptions to the...Ch. 3 - The rating of a branch circuit is based on (Circle...Ch. 3 - a. A 25-ampere branch-circuit conductor is derated...Ch. 3 - Prob. 29RCh. 3 - Prob. 30RCh. 3 - Prob. 31RCh. 3 - Prob. 32RCh. 3 - A split-level home has one stairway that has six...Ch. 3 - Prob. 34RCh. 3 - Prob. 35RCh. 3 - Prob. 36RCh. 3 - In the past, it was common practice to connect the...Ch. 3 - If a residence has two bathrooms, the Code states:...Ch. 3 - Prob. 39RCh. 3 - Prob. 40RCh. 3 - Prob. 41RCh. 3 - Prob. 42RCh. 3 - Prob. 43R
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- ______ protection of equipment shall be provided for solidly grounded wye electrical services of more than 150 volts to ground, but not exceeding 600 volts phase-to-phase for each service disconnecting means rated 1000 amperes or more. Select one: a. arc-fault b. short circuit c ground-fault d. doublearrow_forwardMSQarrow_forwardEquipment Grounding 10. Which of the following statements about ground faults is true?A. They usually occur between any grounded circuit conductor and the equipment grounding conductor. B. They're often normal and typically intentional.C. They can't result from human error.D. They can happen if a conductive tool is dropped in an energized equipment's electrical enclosure.arrow_forward
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- Ground fault protection of - equipment shall be provided for solidly grounded wye electrical services of more than 150 volts to ground, but not exceeding 1000V phase - to - phase for each service disconnecting means rated A. 1000 B. 1500 C. 2000 D. 2500 amperes or more.arrow_forwardFor motor branch circuits, the maximum setting of a conventional inverse-time circuit breaker must not exceed ____ percent of the full-load current of the motor.arrow_forward13. A junction point of current paths is often called a _____. Select one: A. CIRCUIT B. COMBINATION C. NODEarrow_forward
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