410 – Luminaries, Lamp-holders, and Lamps

410.2 and 410.16 – Clothes Closet Storage Space

Change at a Glance:

The word “clothes” was added at the definition, Figure 410.2 and the requirements of 410.16 to limit these requirements to Clothes Closet Storage Space.

410.2 Definitions. (Luminaires, Lampholders, and Lamps)

Clothes Closet Storage Space. The volume bounded by the sides and back closet walls and planes extending from the closet floor vertically to a height of 1.8 m (6 ft) or to the highest clothes-hanging rod and parallel to the walls at a horizontal distance of 600 mm (24 in.) from the sides and back of the closet walls, respectively, and continuing vertically to the closet ceiling parallel to the walls at a horizontal distance of 300 mm (12 in.) or the width of the shelf, whichever is greater; for a closet that permits access to both sides of a hanging rod, this space includes the volume below the highest rod extending 300 mm (12 in.) on either side of the rod on a plane horizontal to the floor extending the entire length of the rod. See Figure 410.2.
Figure 410.2 Clothes Closet Storage Space.

410.16 Luminaires in Clothes Closets.

(A) Luminaire Types Permitted. Only luminaires of the following types shall be permitted in a clothes closet:
(1) Surface-mounted or recessed incandescent or LED luminaires with completely enclosed light sources
(2) Surface-mounted or recessed fluorescent luminaires
(3) Surface-mounted fluorescent or LED luminaires identified as suitable for installation within the clothes closet storage space

(B) Luminaire Types Not Permitted. Incandescent luminaires with open or partially enclosed lamps and pendant luminaires or lampholders shall not be permitted.

(C) Location. The minimum clearance between luminaires installed in clothes closets and the nearest point of a clothes closet storage space shall be as follows:
(1) 300 mm (12 in.) for surface-mounted incandescent or LED luminaires with a completely enclosed light source installed on the wall above the door or on the ceiling.
(2) 150 mm (6 in.) for surface-mounted fluorescent luminaires installed on the wall above the door or on the ceiling.
(3) 150 mm (6 in.) for recessed incandescent or LED luminaires with a completely enclosed light source installed in the wall or the ceiling.
(4) 150 mm (6 in.) for recessed fluorescent luminaires installed in the wall or the ceiling.
(5) Surface-mounted fluorescent or LED luminaires shall be permitted to be installed within the clothes closet storage space where identified for this use.

410.36(A) – Means of Support for Luminaires Supported by Outlet Boxes

Change at a Glance:

Luminaires can be supported in accordance with separable attachment fittings and these outlet boxes are considered lighting outlets.

410.36 Means of Support

(A) Luminaires Supported By Outlet Boxes. Luminaires shall be permitted to be supported by outlet boxes or fittings installed as required by 314.23 and complying with the provisions of 314.27(A)(1) and 314.27(A)(2) shall be permitted to support luminaires. The installation shall comply with the following requirements:
(1) The outlet boxes or fittings shall comply with 314.27(A)(1) and 314.27(A)(2).
(2) Luminaires shall be permitted to be supported in accordance with 314.27(E).
(3) Outlet boxes complying with 314.27(E) shall be considered lighting outlets as required by 210.70(A), (B), and (C).

410.44 – Methods of Grounding. (Luminaires, Lampholders, and Lamps)

Change at a Glance:

Since there is no requirement for a luminaire with no accessible conductive parts, or a luminaire made of insulating material to be grounded, there is no need to exempt such a luminaire from grounding requirements. Therefore, previous Ex. No. 1 to 410.44 was deleted.

410.44 Methods of Grounding. (Luminaires, Lampholders, and Lamps)

Luminaires and equipment shall be mechanically connected to an equipment grounding conductor as specified in 250.118 and sized in accordance with 250.122.
Exception No. 1: Luminaires made of insulating material that is directly wired or attached to outlets supplied by a wiring method that does not provide a ready means for grounding attachment to an equipment grounding conductor shall be made of insulating material and shall have no exposed conductive parts.
Exception No. 1 2: Replacement luminaires shall be permitted to connect an equipment grounding conductor from the outlet in the same manner as replacement receptacles in compliance with 250.130(C). The luminaire shall then comply with 410.42.
Exception No. 2 3: Where no equipment grounding conductor exists at the outlet, replacement luminaires that are GFCI protected or do not have exposed conductive parts shall not be required to be connected to an equipment grounding conductor.

410.69 – Identification of Control Conductor Insulation

Change at a Glance:

New section added to prevent lighting control conductors from being installed using the same color schemes as the branch circuit grounded conductors and the equipment grounding conductor with a future effective date of January 1, 2022.

410.69 Identification of Control Conductor Insulation. (Luminaires, Lampholders, and Lamps)

Where control conductors are spliced, terminated, or connected in the same luminaire or enclosure as the branch-circuit conductors, the field-connected control conductor shall not be of a color reserved for the grounded branch-circuit conductor or the equipment grounding conductor. This requirement shall become effective January 1, 2022.
Informational Note: See 200.6 for identification of grounded conductor and 250.119 for identification of equipment grounding conductor.
Exception: A field-connected gray-colored control conductor shall be permitted if the insulation is permanently re-identified by marking tape, painting, or other effective means at its termination and at each location where the conductor is visible and accessible. Identification shall encircle the insulation and shall be a color other than white, gray, or green.

410.116(C) – Recessed Luminaires Installed in Fire-Resistance Construction

Change at a Glance:

The requirements for recessed luminaires installed in fire-resistance construction revised to be consistent with current listing options and relocated to 410.116(C). Requirements were updated with provisions that address the use of recessed LED luminaires.

410.116 Clearance and Installation. (Flush and Recessed Luminaires)

(C) Installation in Fire-Resistant Construction. Luminaires marked “FOR USE IN NON-FIRERATED INSTALLATIONS” shall not be used in fire-rated installations. Where a luminaire is recessed in fire-resistant material in a building of fire-resistant construction, a temperature higher than 90°C (194°F) but not higher than 150°C (302°F) shall be considered acceptable if the luminaire is plainly marked for that service. the recessed luminaire shall satisfy one of the following:
(1) The recessed luminaire shall be listed for use in a fire resistance-rated construction.
(2) The recessed luminaire shall be installed in or used with a luminaire enclosure that is listed for use in a fire resistance-rated construction.
(3) The recessed luminaire shall be listed and shall be installed in accordance with a tested fire resistance- rated assembly. When a tested fire resistance- rated assembly allows the installation of a recessed fluorescent luminaire, a recessed LED luminaire of comparable construction shall be permitted.

410.118 – Luminaire Access to Other Boxes

Change at a Glance:

New section added to clarify that a luminaire cannot be used to access outlet, pull, or junction boxes or conduit bodies that are not associated with wiring for that luminaire.

410.118 Access to Other Boxes. (Luminaires, Etc.)

Luminaires recessed in ceilings, floors, or walls shall not be used to access outlet, pull, or junction boxes or conduit bodies, unless the box or conduit body is an integral part of the listed luminaire.

Article 410, Part XVI – Horticultural Lighting Equipment

Change at a Glance:

A new Part XVI was added to Article 410 for Horticultural Lighting Equipment.

Article 410, Part XVI Special Provisions for Horticultural Lighting Equipment

410.170 General. Luminaires complying with Parts, I. II, III, IV, V, VI, VII, IX, X, XI, and XII of this article shall be permitted to be used for horticultural lighting. Part XVI shall additionally apply to lighting equipment specifically identified for horticultural use.
Informational Note: Lighting equipment identified for horticultural use is designed to provide a spectral characteristic needed for the growth of plants and can also provide supplemental general illumination within the growing environment.
410.172 Listing.
410.174 Installation and Use.
410.176 Locations Not Permitted.

(A) General Lighting.

(B) Installed Location.
410.178 Flexible Cord.
410.180 Fittings and Connectors.
410.182 Grounding.
410.184 Ground-Fault Circuit-Interrupter Protection.
410.186 Support.
410.188 Hazardous (Classified) Locations.

(See NEC for complete text).