EBK ELECTRICAL WIRING RESIDENTIAL
EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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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
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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
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Explanation of Solution

Description:

The National Electrical Code (NEC) is the basic standard code and it sets the standards for electrical installation work. The NEC safeguards the persons and property from hazards during the usage of electricity. The local and state electrical regulations and codes should also be considered along with the NEC for electrical installation work.

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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EBK ELECTRICAL WIRING RESIDENTIAL
Electrical Engineering
ISBN:9781337516549
Author:Simmons
Publisher:CENGAGE LEARNING - CONSIGNMENT
What is an electric furnace and how does it work?; Author: Fire & Ice Heating and Air Conditioning Inc;https://www.youtube.com/watch?v=wjAWecPGi0M;License: Standard Youtube License