EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 30, Problem 13R
(a)
To determine
Mention whether the statement “receptacles installed from the edge of hot tub or spa should be within 5 ft” is true or false.
(b)
To determine
Mention whether the statement “receptacles installed within 10 ft (3 m) from the hot tub or spa should be protected by GFCI” is true or false.
(c)
To determine
Mention whether the statement “receptacles providing power to the equipment of pool should be GFCI protected” is true or false.
(d)
To determine
Mention whether the statement “wall switches should be installed within 5 ft (1.5 m) from the swimming pool” is true or false.
(e)
To determine
Mention whether the statement “luminaires installed above a spa should be less at least 7 ft 6 in. when the circuit is GFCI protected” is true or false.
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The following circuit is at steady state for t<0. At t=0 sec, the switch is open. Let R₁ =14 ohms, R₂=14
ohms, R3-4 ohms, C₁-1 F, Vx-16 V and Ix-7 A. Find Vc1 (0.8 sec) and voltage across resistor R3 = v(1.4 sec),
as follows:
Vc1(0) in volts=
Vc1(00) in volts=
Rth in ohms=
Vc1(t-0.8 sec) in volts=
v(t-1.4 sec) in volts=
Vx
w
t=0
The relative tolerance for this problem is 10 %.
+
www
R₂
Vit
R3
+
Vc1(t)
C₁
For the circuit shown, the switch opens at t=0 sec. Find i(t=1.5) value as follows.
Let R1-12 ohm, R₂-8 ohm, L=0.6 H, V≤1-10 V and V2-8 V, and determine:
i(0) =
A
A
i(∞0) =
Rth
=
i(1.5 sec)
Ω
A
R₁
L
i(t)
VS2
R2
w
The relative tolerance for this problem is 9 %.
+
V S1
Chapter 30 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
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