EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Textbook Question
Chapter 15, Problem 19R
The Code states that a means must be provided to disconnect an appliance. In the case of an electric clothes dryer, the disconnecting means can be (Circle the correct statemen(s).)
- a. a separate disconnect switch located within sight of the appliance.
- b. a separate disconnect switch located out of sight from the appliance. The switch is capable of being locked in the OFF position.
- c. a cord-and-plug-connected arrangement.
- d. a circuit breaker in a panel that is within sight of the dryer or capable of being locked in the OFF position.
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6.
when seeking to measure the voltage of an industrial power supply (600 Volts AC) an
electrician needs to do the following to prepare the Simpson 260 meter for
measurement (insert the words to make the following statements correct).
a. Set the function switch to
b. The black lead should be inserted in the
jack.
C. The red lead should be inserted in the
jack.
d. The range switch should be set to the
position.
Did you note the safety warnings in this section? Fairly significant, eh?!
Nothing to mess around with!!
7.
Why must you "zero" the meter (adjust it for zero (0)) when measuring resistance?
8.
Describe the steps needed to accomplish the task of zeroing the meter. (4pts)
For the following questions, refer to section 4.19 in the Simpson meter manual.
9.
The Rx 1 resistance range is intended for resistances between
and
Ω.
10. The R x 100 range is intended for resistances between
and
Ω.
11. The Rx 10,000 range is intended for resistances over
0450…
18. A suitable disconnecting means for a fixed appliance is a
A. pigtail cord.
B.light switch that interrupts the hot wire.
C. circuit breaker.
D. two-pole switch that interrupts the common wire.
Lockout is required:
During servicing and maintenance where unexpected ener-
gization or start-up of equipment could harm employees.
During repair and replacement work, and during renovation
work.
a.
b.
C.
During modifications or other adjustments to powered
equipment.
d.
All of the above.
Lockout may involve:
Opening a disconnect switch.
b.
a.
Closing a valve.
Placing a block in the equipment.
d. All of the above.
C.
Lockout is the process ci
Shutting off a machine at the end of a shift.
Warning equipment operators about the risks involved in
bypassing a machine guard.
Preventing the flow of energy from a power source to a
piece of equipment, and keeping it from operating.
a.
b.
C.
d.
Preventing mechanics from starting repairs without the
machine operators' knowledge.
Tagout:
Serves as a warning.
b. Physically restrains a person from operating a power source.
Must be applied using specialized tagout tools.
a.
C.
d.
Must be worn like a badge by the employee who is doing
the repairs.…
Chapter 15 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 15 - Prob. 1RCh. 15 - Prob. 2RCh. 15 - What special type of switch is controlling the...Ch. 15 - Prob. 4RCh. 15 - The total estimated volt-amperes for Circuit B10...Ch. 15 - If an attic is accessible through a scuttle hole,...Ch. 15 - Prob. 7RCh. 15 - Prob. 8RCh. 15 - The following is a layout of the lighting circuit...Ch. 15 - Prob. 10R
Ch. 15 - Prob. 11RCh. 15 - a. What is the minimum power demand allowed by the...Ch. 15 - What is the maximum permitted current rating of a...Ch. 15 - Prob. 14RCh. 15 - a. Must the metal frame of an electric clothes...Ch. 15 - An electric dryer is rated at 7.5 kW and 120/240...Ch. 15 - When a metal junction box is installed as part of...Ch. 15 - A residential air-conditioning unit is installed...Ch. 15 - The Code states that a means must be provided to...
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