Electrical Wiring Residential
19th Edition
ISBN: 9781337101837
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Textbook Question
Chapter 3, Problem 11R
What is the minimum number of 15-ampere lighting branch circuits required if the dwelling has an occupied area of 4000 ft2 (368 m2)? Show all calculations.
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Please use the per-Square-Foot Method to answer the following question:
If we figure at one 15-ampere branch circuit for every 600 ft2, a 3000 ft2 house would have a minimum of how many 15-ampere general purpose lighting branch circuits?
Group of answer choices
A. Four 15-ampere general purpose lighting branch circuits.
B. Five 15-ampere general purpose lighting branch circuits.
C. Six 15-ampere general purpose lighting branch circuits.
D. Seven 15-ampere general purpose lighting branch circuits.
Based on the Pictorial Diagram
below. One lamp controlled by two 3-
way switches in different locations.
draw the following: Schematic
diagram Actual wiring diagram
CB
2.
Task: Simple Wiring Connection Layout of your House
a) Make a simple wiring connection layout of your own house like the image shown
below. The layout will be according to your house and the equipment used in your house.
Mention the total load and current drawn by each room/spaces and the recommended size of
cables to be used beside the cable lines.
The following image is just an example and it is not complete.
You may use standard symbols of the equipment or draw with appropriate label, i.e. fan,
light, switchboard, MCB ete.
b) Add images of equipment used in your house with this question.
Chapter 3 Solutions
Electrical Wiring Residential
Ch. 3 - Prob. 1RCh. 3 - How are branch circuits rated? See NEC 210.3._____Ch. 3 - Prob. 3RCh. 3 - Prob. 4RCh. 3 - What spaces are not included in the floor area...Ch. 3 - What is the unit load per square foot for dwelling...Ch. 3 - According to NEC 210.50(C), a laundry equipment...Ch. 3 - How is the total load in volt-amperes for lighting...Ch. 3 - How is the total lighting load in amperes...Ch. 3 - How is the required number of branch circuits...
Ch. 3 - What is the minimum number of 15-ampere lighting...Ch. 3 - How many lighting branch circuits are provided in...Ch. 3 - Prob. 13RCh. 3 - How is the load determined for outlets supplying...Ch. 3 - What type of circuits must be provided for...Ch. 3 - Prob. 16RCh. 3 - In a single-family dwelling, how is overcurrent...Ch. 3 - Prob. 18RCh. 3 - The minimum number of outdoor receptacles for a...Ch. 3 - The Code indicates the rooms in a dwelling that...Ch. 3 - Prob. 21RCh. 3 - Prob. 22RCh. 3 - Prob. 23RCh. 3 - Prob. 24RCh. 3 - Prob. 25RCh. 3 - Although the Code contains many exceptions to the...Ch. 3 - The rating of a branch circuit is based on (Circle...Ch. 3 - a. A 25-ampere branch-circuit conductor is derated...Ch. 3 - Prob. 29RCh. 3 - Prob. 30RCh. 3 - Prob. 31RCh. 3 - Prob. 32RCh. 3 - A split-level home has one stairway that has six...Ch. 3 - Prob. 34RCh. 3 - Prob. 35RCh. 3 - Prob. 36RCh. 3 - In the past, it was common practice to connect the...Ch. 3 - If a residence has two bathrooms, the Code states:...Ch. 3 - Prob. 39RCh. 3 - Prob. 40RCh. 3 - Prob. 41RCh. 3 - Prob. 42RCh. 3 - Prob. 43R
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