EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 20.2, Problem 10R
a.
To determine
Mention the maximum demand of a free-standing electric range.
b.
To determine
Mention the minimum size of the ungrounded copper conductors.
c.
To determine
Mention the minimum size of the neutral copper conductors.
d.
To determine
Mention the rating of overcurrent protection device for branch-circuit.
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h.1. In an alternating-current system, the maximum size for a copper grounding electrode conductor isA. 250 kcmil.B. 3/0.C. 500 kcmil.D. 4/0.
h.2. The figure shows a fault condition in an ungrounded electrical system. Which of the following will occurbecause of the fault in this system?A. Only the overcurrent protector at Point A will trip open.B. The ground fault will heavily damage the service.C. Nothing will happen until a second ground fault occurs.D. The overcurrent protection will trip, shutting off all the line side power.
8.a. A _______ conductor does not carry current during normal operation.A. neutralB. groundingC. phaseD. grounded8.b. "The complete path of an electric current" describes an electric(al)A. fault.B. circuit.C. source.D. component.
1. Alternating current systems of less than _______ volts are required to be grounded if they're installed outside as overhead conductors.
A. 50 B. 100 C. 75 D. 120
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