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EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition
Simmons
ISBN: 9781337516549

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BuyFindarrow_forward

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition
Simmons
ISBN: 9781337516549
Textbook Problem

List the maximum number of 12 AWG conductors permitted in the following metal boxes:

  1. a. 4 in. × 1½ in. octagon box. __________
  2. b. 4 11 16 in. × 1½ in. square box. __________
  3. c. 3 in. × 2 in. × 3½ in. device box. __________

a.

To determine

Find the maximum possible number of 12 AWG conductors permitted in the 4in.×112in. octagon box.

Explanation

Refer to the table NEC TABLE 314.16(A) in the textbook. This table provides the detail of the maximum possible number of conductors that can be located in the outlet, switch, and device boxes without any wire jamming.

From the NEC TABLE 314.16(A), the maximum six number of 12 AWG size conductors can be placed in the metal octagon box with the size of 4in

b.

To determine

Find the maximum possible number of 12 AWG conductors permitted in the 41116in.×112in. square box.

c.

To determine

Find the maximum possible number of 12 AWG conductors permitted in the 4in.×2in.×312in. device box.

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