FAQ

continued from page 61

Material taken from the National Electric Code

is reprinted with permission

from NFPA 70

, 2023 edition. National Electrical Code

NEC

Text

continued on page 64

Revision/New

314.24(B)(C) Box Depth/Conductor

Clearance from Devices - Rear and

Side Entry

Change Summary

• The NEC has set direction on conductors

entering boxes

Article 314 Outlet, Device, Pull, and Junction Boxes;

Conduit Bodies; Fittings; and Handhole Enclosures

314.24 Dimensions of Boxes.

(B) Depth of Outlet and Device Boxes with Enclosed

Devices or Utilization Equipment.

(4) Conductors 12 or 10 AWG. Boxes that enclose

devices or utilization equipment supplied by 12 or 10 AWG

conductors shall have an internal depth that is not less than

30.2 mm (1

in.). Where the equipment projects rearward

from the mounting plane of the box by more than 25 mm

(1 in.), the box shall have a depth not less than that of the

equipment plus 6 mm (1/4 in.). Where wiring enters the

center portion of the rear of a box opposite to the equipment,

the minimum clearance shall be increased to 13 mm

(1/2 in.).

or equipment are mounted in boxes having side-wiring

entries, the conductors entering from the side shall be

protected as covered in (1) or (2), as follows. The term side

applies to any wall of a box other than the one opposite to

the opening.