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EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition
Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
ISBN: 9781337516549

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BuyFindarrow_forward

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition
Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
ISBN: 9781337516549
Chapter 11, Problem 1R
Textbook Problem
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  1. How many circuit wires enter the entry ceiling box?
  2. How many equipment grounding conductors enter the entry ceiling box?

a.

To determine

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:

Conductors=(4×3conductors)+(2×2conductors)=16conductors

Conclusion:

Thus, the sixteen circuit wires are in the entry ceiling box.

b.

To determine

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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