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410, Part XVI Horticultural Lighting Equipment

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Change Summary

  • A new Part XVI was added to Article 410 for “Special Provisions for Horticultural Lighting Equipment.”
NEC® Text

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).

Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2020 edition.
National Electrical Code®, Copyright 2019, National Fire Protection Association, Quincy, MA. All rights reserved.

Expert Analysis

Article 410, Part XVI Special Provisions for Horticultural Lighting Equipment

With the advent of special plant growth LED sources and discharge lamps, and the increase of indoor plant growing facilities, horticultural lighting equipment is a rapidly expanding technology.

This new Part XVI will cover such things as listing requirements, installation and use, locations not permitted, general lighting requirements, flexible cord provisions, fittings and connectors, grounding requirements, GFCI protection provisions, supporting requirements and requirements for installations in hazardous (classified) locations. While Article 547 has requirements for agricultural buildings, horticultural lighting installations have special considerations not previously addressed by the Code. These new Code requirements were needed to ensure safe installations and to facilitate inspection procedures. These types of luminaires are evaluated under the UL Product Spec category of “IFAU” (Horticultural Luminaires).

 

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