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314.25 Covers and Canopies. In completed installa-

tions, each box shall have a cover, faceplate, lampholder, or

luminaire (fixture) canopy, except where the installation

complies with 410.14(B).

(A) Nonmetallic or Metal Covers and Plates.

Nonmetallic or metal covers and plates shall be

permitted. Where metal covers or plates are used,

they shall comply with the grounding requirements

of Section 250.110.

FPN: For additional grounding requirements, see Section

410.18(A) for metal luminaire (fixture) canopies, and

404.12 and 406.5(B) for metal faceplates.

(B) Exposed Combustible Wall or Ceiling Finish.

Where a luminaire (fixture) canopy or pan is used, any

combustible wall or ceiling finish exposed between

the edge of the canopy or pan and the outlet box

shall be covered with noncombustible material.

conduit bodies having holes through which flexible

cord pendants pass shall be provided with bushings

designed for the purpose or shall have smooth, well-

rounded surfaces on which the cords may bear. So-

called hard rubber or composition bushings shall not

be used.

314.27 Outlet Boxes.

(A) Boxes at Luminaire (Lighting Fixture) Outlets.

Boxes used at luminaire (lighting fixture) or lamphold-

er outlets shall be designed for the purpose. At every

outlet used exclusively for lighting,

the box shall be

designed or installed so that a luminaire (lighting

fixture) may be attached.

Exception: A wall-mounted fixture weighing not more

than 3 kg (6 lb.) shall be permitted to be supported on

other boxes, provided the luminaire (fixture) or its sup-

porting yoke is secured to the box with no fewer than

two No. 6 or larger screws.

(B) Maximum Luminaire (Fixture) Weight. Outlet

boxes or fittings installed as required by 314.23 shall

be permitted to support luminaires (lighting fixtures)

weighing 23 kg (50 lbs.) or less. A luminaire (lighting

fixture) that weighs more than 23 kg (50 lbs.) shall be

supported independently of the outlet box unless the

outlet box is listed for the weight to be supported.