ELECTRICAL WIRING:RESIDENTAL-6 PLANS
18th Edition
ISBN: 9781305098329
Author: MULLIN
Publisher: CENGAGE L
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Chapter 19.1, Problem 21R
Fill in the data for a 16-ampere electric motor, single-phase, no Code letters.
- a. Branch-circuit protection, non-time-delay fuses:
Normal size _____________A Maximum size _____________A
Switch size _____________A Switch size _____________A
- b. Branch-circuit protection dual-element, time-delay fuses:
Normal size _____________A Maximum size _____________A
Switch size _____________A Switch size _____________A
- c. Branch-circuit protection instant-trip breaker:
Normal setting _____________A
Maximum setting _____________A
- d. Branch-circuit protection—inverse time breaker:
Normal rating _____________A
Maximum rating _____________A
- e. Branch-circuit conductor size, Type THHN
Ampacity _____________A
- f. Motor overload protection using dual-element time-delay fuses:
Maximum size _____________A
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True or False
1. The point of connection of a motor for its electrical supply is called junction box.
2. The bearing placed in the shaft of the generator is included as stator part.
3. Basically, not all generators are AC generator at first, even DC generator
4. DC generator can be used as an emergency generator.
5. Circuit breakers are used in a motor circuit protection rather than fuses (safety switch).
Calculate the following. a) Expected voltage at “A” with switch SW1 open. b) Expected voltage at “A” with switch SW1 closed.
ENUMERATION. List down or enumerate what are asked for in each number.
1. Common types of light sources.
2. Classes of motor starters.
3. Classification of electric motors
4. Branch circuit classification.
5. Factors in selecting service conductors.
6. Factors in selecting generator
Chapter 19 Solutions
ELECTRICAL WIRING:RESIDENTAL-6 PLANS
Ch. 19.1 - Does a jet pump have any electrical moving parts...Ch. 19.1 - Prob. 2RCh. 19.1 - Where is the jet of the pump located?...Ch. 19.1 - Prob. 4RCh. 19.1 - Prob. 5RCh. 19.1 - Prob. 6RCh. 19.1 - Prob. 7RCh. 19.1 - What is compressed in the water storage tank?...Ch. 19.1 - Explain the difference between a 2-wire...Ch. 19.1 - Prob. 10R
Ch. 19.1 - Why is a 240-volt motor preferable to a 120-volt...Ch. 19.1 - How many amperes does a 1-horsepower, 240-volt,...Ch. 19.1 - What size are the conductors used for this branch...Ch. 19.1 - Prob. 14RCh. 19.1 - What provides the running overload protection for...Ch. 19.1 - What is the maximum ampere setting permitted for...Ch. 19.1 - Prob. 17RCh. 19.1 - Because the controller contains the motor starting...Ch. 19.1 - Prob. 19RCh. 19.1 - Proper pressure of the submersible pump system is...Ch. 19.1 - Fill in the data for a 16-ampere electric motor,...Ch. 19.1 - The NEC is very specific in its requirement that...Ch. 19.1 - Does the NEC allow submersible pump cable to be...Ch. 19.1 - Must the disconnect switch for a submersible pump...Ch. 19.1 - A metal well casing (shall) (shall not) be bonded...Ch. 19.2 - Prob. 1RCh. 19.2 - A major hazard involved with water heaters is that...Ch. 19.2 - Prob. 3RCh. 19.2 - The heating elements in electric water heaters are...Ch. 19.2 - An 80-gallon electric water heater is energized...Ch. 19.2 - Prob. 6RCh. 19.2 - For residential water heaters, the Consumer...Ch. 19.2 - An 80-gallon electric water heater has 60F...Ch. 19.2 - Approximately how long would it take to produce...Ch. 19.2 - Two thermostats are generally used in an electric...Ch. 19.2 - a. How many heating elements are provided in the...Ch. 19.2 - When does the lower heating element operate?...Ch. 19.2 - Prob. 14RCh. 19.2 - Prob. 15RCh. 19.2 - Prob. 16RCh. 19.2 - a. If both elements of the water heater in this...Ch. 19.2 - a. How much power in watts would the two elements...Ch. 19.2 - A condominium owner complains of not getting...Ch. 19.2 - For a single, nonmotor-operated electrical...Ch. 19.2 - A 7000-watt resistance-type heating appliance is...Ch. 19.2 - Prob. 22R
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