Electrical Wiring Residential
19th Edition
ISBN: 9781337101837
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Chapter 23.2, Problem 1R
a.
To determine
Whether is it necessary to add air-conditioner load and electric heating load to obtain the combined load on the system.
a.
Expert Solution
Answer to Problem 1R
No, it is not necessary to add air-conditioner load and electric heating load to obtain the combined load on the system.
Explanation of Solution
Description:
From NEC 220.60, it is not necessary to add air-conditioner load and electric heating load to obtain the combined load on the system.
Conclusion:
No, it is not necessary to add air-conditioner load and electric heating load to obtain the combined load on the system.
b.
To determine
Explain the reason why it is not necessary to add air-conditioner load and electric heating load to obtain the combined load on the system.
b.
Expert Solution
Explanation of Solution
Description:
The National Electrical Code (NEC) is the basic standard code and it sets the standards for
From NEC 220.60, the noncoincident loads such as electric heating and air-conditioner are not operated at the same time. Therefore, when calculating the feeder value that is used to supply both the loads, the larger value of loads can be considered.
Therefore, it is not necessary to add air-conditioner load and electric heating load to obtain the combined load on the system.
Conclusion:
Thus, the reason why it is not necessary to add air-conditioner load and electric heating load to obtain the combined load on the system is explained.
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Chapter 23 Solutions
Electrical Wiring Residential
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