EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Question
Chapter 29, Problem 1R
To determine
State what minimum-size service is needed for a single family dwelling and also provide the NEC Code that states it.
Expert Solution & Answer
Answer to Problem 1R
The required minimum-size main service is 100 amperes and the Code is NEC 230.79(C).
Explanation of Solution
Discussion:
The National Electrical Code committee develops NEC – the standard electrical code. The main objective for the origin of the code is to protect and safeguard the person and elements from electrical hazards.
For a one family dwelling, according to National Electric Code NEC 230.79(C), the required minimum-size service is 100 amperes.
Conclusion:
Thus, the required minimum-size main service is 100 amperes and the Code is NEC 230.79(C).
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Prelab Information
1. Laboratory Preliminary Discussion
First-order Low-pass RC Filter Analysis
The first-order low-pass RC filter shown in figure 1 below represents all voltages and currents in the time domain. It is of course
possible to solve for all circuit voltages using time domain differential equation techniques, but it is more efficient to convert the
circuit to its s-domain equivalent as shown in figure 2 and apply Laplace transform techniques.
vs(t)
i₁(t)
+
R₁
ww
V₁(t)
12(t)
Lic(t)
Vout(t)
=
V2(t)
R₂
Vc(t)
C
Vc(t)
VR2(t)
= V2(t)
+
Vs(s)
Figure 1: A first-order low-pass RC filter represented in the time domain.
I₁(s)
R1
W
+
V₁(s)
V₂(s)
12(s)
Ic(s)
+
Vout(S)
==
Vc(s)
Vc(s)
Zc(s)
=
=
VR2(S)
V2(s)
Figure 2: A first-order low-pass RC filter represented in the s-domain.
use matlab
I need help with this problem and an explanation of the solution for the image described below. (Introduction to Signals and Systems)
Chapter 29 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
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