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How many circuit wires enter the entry ceiling box? How many equipment grounding conductors enter the entry ceiling box?
EBK ELECTRICAL WIRING RESIDENTIAL
Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
- How many circuit wires enter the entry ceiling box?
- How many equipment grounding conductors enter the entry ceiling box?
a.
State the number of circuit wires that go through the entry ceiling box.
Answer to Problem 1R
Sixteen wires are in the entry ceiling box.
Explanation of Solution
Discussion:
Refer Circuit A15 in the textbook, which is given in FIGURE 11-1 that provides a cable layout of front entry, porch, and post light.
From FIGURE 11-1, it is observed that 6 wires are there from S3. In 6 wires, four wires each have three conductors, and two wires have two conductors. Therefore, the total numbers of conductors are calculated as follows:
Conclusion:
Thus, the sixteen circuit wires are in the entry ceiling box.
b.
State how many equipment grounding conductors (EGCs) enter into the entry ceiling box.
Answer to Problem 1R
One EGC goes into the entry ceiling box.
Explanation of Solution
Discussion:
Equipment grounding conductors provide the ground fault current path. In FIGURE 11-1, only one conductor is connected to the ground.
Conclusion:
Thus, one EGC goes into the entry ceiling box.
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