Electrical Wiring Residential
19th Edition
ISBN: 9781337101837
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Question
Chapter 21.2, Problem 1R
a.
To determine
Mention the name of the branch circuit that is connected to the dishwasher.
a.
Expert Solution
Answer to Problem 1R
The dishwasher is connected to
Explanation of Solution
Discussion:
A dishwasher is a machine used for automatic cleaning of dishware and cutlery. It consists of a motor, an electric heating element, and a small fan that is used to circulate hot air during the drying cycle.
A 120 volts, 20 ampere rated dishwasher is connected to B5 branch circuit that originates in Panelboard B.
Conclusion:
Thus, the dishwasher is connected to
b.
To determine
Mention the size of the wire utilized to connect the dishwasher.
b.
Expert Solution
Answer to Problem 1R
The size of the wire utilized to connect the food waste disposer is
Explanation of Solution
Discussion:
A THHN type 12 AWG-sized copper conductors are used to connect the dishwasher to the branch circuit. Any one of the wiring methods among nonmetallic-sheathed cable, EMT, or Type MC cable will be used depending upon the requirement.
Conclusion:
Thus, the size of the wire utilized to connect the dishwasher is
c.
To determine
Explain whether the branch circuit of dishwasher is required to be provided with AFCI protection or not.
c.
Expert Solution
Answer to Problem 1R
Yes, the branch circuit of dishwasher is required to be provided with AFCI protection.
Explanation of Solution
Discussion:
As defined in NEC 210.8(D), AFCI protection is required to be provide for the branch circuit of dishwasher.
Conclusion:
Yes, the branch circuit of dishwasher is required to be provide with AFCI protection.
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Chapter 21 Solutions
Electrical Wiring Residential
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