ELECTRICAL WIRING:RESIDENT.-TEXT (PB)
19th Edition
ISBN: 9781337116213
Author: MULLIN
Publisher: CENGAGE L
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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:RESIDENT.-TEXT (PB)
Ch. 23.1 - a. What is the allowance in watts made for...Ch. 23.1 - What are some of the advantages of electric...Ch. 23.1 - List the different types of electric heating...Ch. 23.1 - There are two basic voltage classifications for...Ch. 23.1 - What device is required when the total connected...Ch. 23.1 - Prob. 6RCh. 23.1 - Prob. 7RCh. 23.1 - A certain type of control connects electric...Ch. 23.1 - What advantages does a 240-volt heating unit have...Ch. 23.1 - The white wire of a cable may be used to connect...
Ch. 23.1 - Receptacle outlets furnished as part of a...Ch. 23.1 - The branch circuit supplying a fixed electric...Ch. 23.1 - Prob. 13RCh. 23.1 - For ballpark calculations, the wattage output of a...Ch. 23.1 - A central electric furnace heating system is...Ch. 23.1 - What section of the Code provides the correct...Ch. 23.1 - Electric heating cable embedded in plaster, or...Ch. 23.2 - Prob. 1RCh. 23.2 - Prob. 2RCh. 23.2 - Prob. 3RCh. 23.2 - a. Must an air conditioner installed in a window...Ch. 23.2 - Prob. 5RCh. 23.2 - What is the Code requirement for receptacles...Ch. 23.2 - Prob. 7RCh. 23.2 - When the nameplate on an air-conditioning unit...Ch. 23.2 - Prob. 9RCh. 23.2 - Match the following terms with the statement that...Ch. 23.2 - The disconnect for an air conditioner or heat pump...
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