EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 22.2, Problem 6R
To determine
Mention the rating of the dual-element, time-delay fuse in the switch/fuse box cover unit.
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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. double
45. A switch or circuit breaker can be used as both the controller and disconnecting means if
it
a. opens all ungrounded conductors as required by NEC 430.103
b. is protected by an overcurrent device in each ungrounded conductor
c. is manually operable, or both power and manually operable
d. All of these answers
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
Chapter 22 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 22.1 - Prob. 1RCh. 22.1 - Prob. 2RCh. 22.1 - Prob. 3RCh. 22.1 - Prob. 4RCh. 22.1 - Prob. 5RCh. 22.1 - Prob. 6RCh. 22.1 - Prob. 7RCh. 22.1 - Prob. 8RCh. 22.1 - Prob. 9RCh. 22.1 - Prob. 10R
Ch. 22.1 - Prob. 11RCh. 22.1 - Prob. 12RCh. 22.2 - Prob. 1RCh. 22.2 - Prob. 2RCh. 22.2 - Prob. 3RCh. 22.2 - Prob. 4RCh. 22.2 - Prob. 5RCh. 22.2 - Prob. 6RCh. 22.2 - Prob. 7RCh. 22.2 - Prob. 8RCh. 22.2 - Prob. 9RCh. 22.2 - Prob. 10RCh. 22.2 - Prob. 11RCh. 22.2 - Prob. 12RCh. 22.3 - Prob. 1RCh. 22.3 - Which of the following statements Meets Code?...Ch. 22.3 - Prob. 3RCh. 22.3 - Prob. 4RCh. 22.3 - Prob. 5RCh. 22.3 - Prob. 6RCh. 22.3 - Prob. 7RCh. 22.3 - Prob. 8R
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- Food-waste disposers include a small manual reset button to restart the motor if it overheats and goes off-line due to prolonged use, something falls into the unit and jams it, or another cause. This manual reset provides the ____ protection required by Code for this type of appliance. A. short-circuitB. ground-faultC. overloadD. all of thesearrow_forwardFill in the blank 14. Mechanisms for __________ include switches,sensors,and circuitry.arrow_forwardAn open in one of the heated rear window grid elements can be repaired by ______. a. pealing the heat grid off the glass with a heat gun and installing a new grid element b. applying a thin strip of a repair compound to the damaged area c. bridging the damaged area with rosin core solder d. replacing the window glassarrow_forward
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