1: A disconnecting means shall not be required for luminaires installed in hazardous. The means for providing illumination has gone through numerous changes over the centuries, from oil lamps to incandescent bulbs, to fluorescent tubes and LEDs. Installation. Luminaires that use a metal halide lamp other than a thick-glass parabolic reflector lamp (PAR) shall be provided with a containment barrier that encloses the lamp, or shall be provided with a physical means that only allows the use of a lamp that is Type O.Informational Note: See ANSI Standard C78.389, General. (A) Wet and Damp Locations. on either side of the rod on a plane horizontal to the floor extending the entire length of the rod. Luminaires shall be permitted to be installed in commercial cooking hoods where all of the follow ing conditions are met: The luminaire shall be identified for use within commer cial cooking hoods and installed such that the tempera ture limits of the materials used are not exceeded. Wiring of luminaires. Support. A couple of notes here from field experience: if the resident complains that the luminaires are shutting off and on randomly, it is likely that the lamps are oversized for the luminaire or the wrong trim is being used. 410.50 Polarization of Luminaires. Grounding. Metal or nonmetallic poles shall be permitted to be used to support luminaires and as a raceway to enclose supply conductors, provided the following conditions are met: A pole shall have a handhole not less than 50 mm 100 mm (2 in. New articles and requirements for never before covered systems and equipment such as Class 4 fault-managed circuits, hazardous locations within commercial and industrial cannabis production facilities, equipotential bonding in and around areas with splash pads, insulated bus pipe/tubular covered conductors systems, and more An incandescent lamp for general use on lighting branch circuits shall not be equip ped with a medium base if rated over 300 watts, or with a mogul base if rated over 1500 watts. nec article 410 contains requirements for installing. Transformers shall have a secondary short-circuit current rating of not more than 150 mA if the open-circuit volt age is over 7500 volts, and not more than 300 mA if the open- circuit voltage rating is 7500 volts or less. In addition to complying with the general requirements for luminaires, such equipment shall comply with Part XIII of this article. Adjacent to Combustible Materials. Lighting track shall be supplied by a branch circuit having a rating not more than that of the track. General-purpose electrical equipment includes heaters, switches, receptacles, and cords. Parts VI through IX deal with items generally covered by the manufacturers of the luminaires. For some reason, these are not commonly purchased with an IC rating. 150 mm (6 in.) Thermal Protection Fluorescent Luminaires. There are requirements for supported and unsupported cables. Recessed high-intensity luminaires designed to be installed in wall or ceiling cavities shall have thermal protec tion and be identified as thermally protected. 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. More times than not, these custom one-of-a-kind units are not typically listed and labeled by a Nationally Recognized Testing Laboratory (NRTL). Part V reviews the grounding requirements and basically states that if a luminaire or lighting equipment has metal parts, it shall be grounded. The first definition found in 410.2 is for closet storage space. Open-Circuit Voltage Exceeding 300 Volts. 410.14 Luminaires in Show Windows. Direct-Current Equipment. Luminaires installed on dc circuits shall be equipped with auxiliary equipment and resistors designed for dc operation. Dwelling Occupancies. A recessed remote ballast for a high-intensity discharge luminaire shall have thermal protec tion that is integral with the ballast and shall be identified as thermally protected. Exception No. The first is related to locations in and near bathtub and shower areas. IAEI News Magazine. The installation shall comply with 410.59(A) through (E). The installation requirements for motor control centers are covered in 110.26 (F), and air-conditioning and refrigerating equipment are covered in Article 440. Portable Handlamps. Where showcases are cord- connected, the secondary circuit(s) of each electric-discharge lighting ballast shall be limited to one showcase. Transformers of the Oil-Filled Type. I will not go into detail here, but the scope has a laundry list of items and you will find that it is pretty exclusively related to lighting products and devices. Secondary Circuit(s). Listed. Properly Secured. Therefore, these fixtures now require a disconnecting means. Lampholders installed in damp locations shall be listed for damp locations or shall be listed for wet locations. Luminaires installed in wet or damp locations shall be installed such that water cannot enter or accumulate in wiring compartments, lampholders, or other electrical parts. Now lets review the definition in 410.2, which further defines what closet storage space is within a clothes closet. Chain-supported lumin aires used in a show window shall be permitted to be externally wired. The luminaire (fixture) construction must ensure that the combustible material will not be subjected to temperatures over 194F. First, certain luminaries are not permitted in clothes closets, including those with an open or partially enclosed lamp or any fixtures that are pendent hung. Outlet Boxes. Five exceptions exist in the 2011 Code, so please review. Luminaires shall be installed so that adjacent combustible material will not be subjected to temperatures in excess of 90C (194F). 1.2 m (4 ft) in length shall have one additional support. These are very commonly used in residential construction and are a very important part of the residential inspection process. Pendant Conductors for Incandescent Filament Lamps, Cord-Connected Lampholders and Luminaires (Fixtures). Electric-discharge and LED luminaires surface mounted over concealed outlet, pull, or junction boxes and designed not to be supported solely by the outlet box shall be provided with suitable openings in the back of the luminaire to provide access to the wiring in the box. Stranding. Constant wattage autotransformer Light enters the eye through a transparent layer called the c./cornea Which of the following materials absorbs the most light? Autotransformers. The disconnecting means shall be located so as to be accessible to qualified persons before servicing or main taining the ballast. 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.) Support of Exposed Cable for PV Systems: Requirements and Recommendations, Baby, Its Cold OutsideBut the House is Warm and Electrically Safe, Grounding and Bonding Devices and Splicing Connectors for the Line Side of the Service, NEC Rapid Shutdown Requirements and UL 3741, Basic three-phase power measurements explained, Electricians Adapt to Increased Growth in Lighting Technologies. You might ask why this requirement applies to double ended lamp units only. Along with making sure they have used lamps that are not larger than the luminaire allows per its listing and labeling, these little foil-covered insulation pieces are part of the fixture and are there to ensure we dont have heat transfer from the lamp to the wire terminations. Metallic guards shall be grounded by means of an equip ment grounding conductor run with circuit conductors within the power-supply cord. The minimum clearance between luminaires installed in clothes closets and the nearest point of a closet stor age space shall be as follows: 300 mm (12 in.) Unless an individual switch is provided for each luminaire, lampholders shall be located at least 2.5 m (8 ft) above the floor or shall be located or guarded so that the lamps cannot be readily removed or damaged. Open-Circuit Voltage of 1000 Volts or Less. D4(b) Optional Calculation for Multifamily Dwelling, Example No. Exposed accessible terminals in lampholders and switches shall not be installed in metal luminaire canopies or in open bases of portable table or floor luminaires.Exception: Cleat-type lampholders located at least 2.5 m (8 ft) above the. D8 Motor Circuit Conductors, Overload Protection, and Short-Circuit and Ground-Fault Protection, Example No. for a fluorescent luminaire (fixture). Electric-discharge luminaires equipped with a flanged surface inlet shall be permitted to be supplied by cord pendants equipped with cord connectors. The last thing we want is to have a heat source that may ignite some material within the ceiling and cause an attic fire. Inlets and connectors shall be permitted to be of a lower ampere rating than the branch circuit but not less than 125 percent of the luminaire load current. Combustible Material. 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.) As we all know, heat rises, and a heat pocket is created within each fixture. Connection of Electric-Discharge and LED Luminaires. In a completed installa tion, each outlet box shall be provided with a cover unless covered by means of a luminaire canopy, lampholder, recepta cle, or similar device. Normally, luminaires (fixtures) cannot be used as raceways. If you are tasked with doing inspections for parking lot lighting, you need to be familiar with a few items. Part III. Receptacles, Connectors, and Attachment Plugs. Lighting track shall be securely mounted so that each fastening is suitable for supporting the maximum weight of luminaires that can be installed. Tap conductors can run to a box at least 300 mm (1 ft.) from the fixture. Scope. Incandescent luminaires with open or partially enclosed lamps and pendant luminaires or lampholders shall not be permitted. Luminaires designed for end-to-end connection to form a continuous assembly, or luminaires connected together by recognized wiring methods, shall be permitted to contain the conductors of a 2-wire branch circuit, or one multiwire branch circuit, supplying the connec ted luminaires and shall not be required to be listed as a race way. This becomes a challenge because insulation has the tendency to go everywhere if it is blown in; or if it is batt insulation, it may eventually fall onto a fixture. A metal pole shall be provided with an equipment grounding terminal as follows: A pole with a handhole shall have the equipment grounding terminal accessible from the handhole. Circuit Conductors. Unless part of listed decorative lighting assemblies, pendant conductors shall not be smaller than 14 AWG for mogul-base or medium-base screw shell lampholders or smaller than 18 AWG for intermediate or candelabra-base lampholders. Recessed Remote Ballasts. Having been a contractor for several years, I was often exasperated at whoever designed a location for lighting to be installed that you physically could not get to in order to service it, especially some of the cove lighting in restrooms where the installed stalls and plumbing fixtures created great obstacles to work around. Closet Storage Space. constant wattage autotransformer Recessed. Surface-mounted luminaires (fixtures) can be installed on the wall above the door or on the ceiling. The vertical location of the kitchen countertop receptacles is addressed in 210.52 (C) (5); they are not permitted more than 20 inches above the countertop. Randy Hunter is an instructor and consultant specializing in electrical code and installations, and co-owner of Hunter Technical Services. Cord Requirements. Listing Required. Transformers shall be accessible after installa tion. A luminaire assembly equipped with a strain reliefand canopy shall be permitted to use a cord connectionbetween the luminaire assembly and the canopy. The equipment grounding conductor c. There are other requirements in each of these parts that I encourage you to review, since this article only covers the highlights. Lampholders. a. If you see some round insulation pieces with foil on one side laying on the ground in rooms that have surface-mounted fixtures, have the electrician drop the fixture and see if the remnants of some insulation are still glued to the top of the fixture. One additional 2-wire branch circuit separately supplying one or more of the connected luminaires shall also be permit ted. In Article 100 we find the definition for a clothes closet, which is a non-habitable room or space intended primarily for the storage of garments and apparel. Exit Luminaires. Snap switches shall comply with 404.14. Marking. Flexible cord shall be of the hard- service type, having conductors not smaller than the branch- circuit conductors, having ampacity at least equal to the branch-circuit overcurrent device, and having an equipment grounding conductor.Informational Note: See Table 250.122 for size of equipment grounding conductor. Fastening. 3: Where no equipment grounding conductor exists at the outlet, replacement luminaires that are GFCI protected shall not be required to be connected to an equipment grounding conductor. samsung dishwasher top rack falls down. Wiring of cranes and hoists. Considered as Energized. 4: A disconnecting means shall not be required in industrial establishments with restricted public access where conditions of maintenance and supervision ensure that only qualified persons service the installation by written procedures. Inherently Protected. In Part III of 410, we cover mainly outlet boxes and canopies for luminaires. General. A common problem here is that a contractor will use a particular brand of recessed can, and then trim them out with a different brand of trim; since those items were not tested together, this is a violation of the IC listing of the recessed can. 410.130 (G) Disconnecting means. D2(a) Optional Calculation for One-Family Dwelling Heating Larger than Air Conditioning [See Section 220.82], Example No. This restriction is not required if the luminaire (fixture) is installed in poured concrete and is approved for this use or when the luminaire (fixture) by construction design provides characterisitics that are equivalent to thermally protected characteristics, and are identified as such. Support. However, the requirements within this article are important to know and enforce. He has been a master electrician since 1988. Tap Conductors. 4 in.) Luminaires listed and marked for use as a raceway shall be permitted to be used as a raceway. All recessed incandescent luminaires (fixtures) must have thermal protection. in length and intended to facilitate the connection to an outlet box mounted above a suspended ceiling. This includes cables, conductors, wiring devices, and others. 410.68 Feeder and Branch-Circuit Conductors and Ballasts. You probably guessedit is the last item in Article 410, and it states that holiday lighting shall be in accordance with Article 590.3(B). Luminaires shall be constructed such that adjacent combustible material is not subject to tempera tures in excess of 90C (194F). The NEC specifies a few requirements for outlet boxes, inspection, suspended ceilings, luminaire (fixture) studs, insulating joints, raceway fittings, busways, and trees. 2: Replacement luminaires shall be permitted to connect an equipment grounding conductor from the outlet in compliance with 250.130(C). 410.52 Conductor Insulation. from lamp terminals shall not be required to be grounded. Protection Through Metal. Article 110 of the National Electrical Code (NEC) covers the general requirements for the examination and approval, installation and use, access to, and spaces about electrical equipment. Busways. Secondary Connections. Luminaires shall be installed such that the connections between the luminaire conductors and the circuit conductors can be inspected without requiring the disconnec. The insulation used on conductors must be suitable for the temperatures that they will be subjected to. Chapter 4: Equipment for General Use. A simple reactance ballast in a fluorescent luminaire with straight tubular lamps shall not be required to be thermally protected. These buildings concern unique environments that pose a high risk to multiple people. The term luminaires is recommended by the International Electrotechnical Commission. This is usually not an issue on 6 or 7 inch recessed cans, as they are typically IC rated and easily checked. Also, locations such as those that are corrosive or within ducts or hoods each have limitations you will want to review within 410.10 if inspecting these areas. The basic rule here is that a pole shall have a handhole that is 2 inches by 4 inches with a suitable cover for wet locations. 150 mm (6 in.) Exception No. Other. They must be installed so that any adjacent combustible material will not be subjected to a temperature higher than 90C (194F). Lampholders installed in wet locations shall be listed for use in wet locations. Please take time to read the scope of this article in 410.1. Article 410 is another example of an article in Chapter 4 of the NEC that often doesn't get a lot of emphasis from multi-trade inspectors. Equipment for use with electric-discharge lighting systems and designed for an open-circuit voltage of 1000 volts or less shall be of a type identified for such service. Type IC luminaires have different requirements. No other externally wired luminaires shall be used. Luminaires shall be of such construction or installed so that the conductors in outlet boxes shall not be subjected to temperatures greater than that for which the conductors are rated.Branch-circuit wiring, other than 2-wire or multiwire branch circuits supplying power to luminaires connected together, shall not be passed through an outlet box that is an integral part of a luminaire unless the luminaire is identified for through-wiring.Informational Note: See 410.64(C) for wiring supplying power to luminaires connected together. Framing members of suspended ceil ing systems used to support luminaires shall be securely fastened to each other and shall be securely attached to the building structure at appropriate intervals. Each fitting attached to a heavy-duty lighting track shall have individ ual overcurrent protection. The details are found in 410.10(D), where we describe a zone in which no luminaire may be installed. A ballast in a fluorescent luminaire that is used for egress lighting and energized only during a fail ure of the normal supply shall not have thermal protection. This article covers luminaires, portable lumin aires, lampholders, pendants, incandescent filament lamps, arc lamps, electric-discharge lamps, decorative lighting products, lighting accessories for temporary seasonal and holiday use, portable flexible lighting products, and the wiring and equip ment forming part of such products and lighting installations. Use Table 402.5 for 18-16 AWG conductors. Exception No. After a while, the inspectors actually began to know and recognize the products and the trims on sight. Heavy-duty lighting track is lighting track identified for use exceeding 20 amperes. Simple Reactance Ballasts. Many times workers who are shocked dont die from the electrocution, but from the fall. Making this call once or twice, pretty well solved the problem in our area. If the luminaire (fixture) is recessed in fire-resistant construction in a fire-resistant building, the temperature restriction is increased to 150C (302F) if the luminaire (fixture) is approved for this service. Luminaires and equipment shall be mechanically connected to an equipment grounding conductor as specified in 250.118 and sized in accordance with 250.122. Luminaires shall not be used as a raceway for circuit conductors unless they comply with 410.64(A), (B), or (C). Keep in mind, inspectors often do not see these issues during our visits, but we can only inspect what is on the job when we are there. Insulating Joints. Parts of the luminaire exposed within the hood shall be corrosion resistant or protected against corrosion, and the surface shall be smooth so as not to collect deposits and to facilitate cleaning. The track system ends shall be insulated and capped. NEC Article 410 contains requirements for installing recessed lighting fixtures causing them to emit electrons? Access to Boxes. in any dimension shall not be suppor ted by the screw shell of a lampholder. The conductors shall be installed within the track housing, permit ting insertion of a luminaire, and designed to prevent tamper ing and accidental contact with live parts. D5(b) Optional Calculation for Multifamily Dwelling Served at 208Y/120 Volts, Three Phase, Example No. Decorative lighting and similar accessories used for holiday lighting and similar purposes, in accordance with 590.3(B), shall be listed. Conductors in vertical poles used as raceway shall be supported as provided in 300.19. One word of caution with IC rated cans: make sure the proper size lamp and the matching trim is used, as these are tested using specific lamp and trim combinations to insure they do not overheat. D10 Feeder Ampacity Determination for Adjustable-Speed Drive Control [See 215.2, 430.24, 620.13, 620.14, 620.61, Tables 430.22(E), and 620.14], Example No. Professional. Professional. Decorative Lighting and Similar Accessories. Luminaires identified for through- wiring, as permitted by 410.21, shall be permitted to be used as a raceway. Instant start lamps Which of the following is an HID ballast category? There are additional requirements for cable installed in cable tray and cable grouped together supported by messenger cable. 410.64 Luminaires as Raceways. Part XII. Solder Prohibited. In Ducts or Hoods. Informational Note No. but not more than 1.8 m (6 ft) in length. Conductors shall be arranged so that the weight of the luminaire or movable parts does not put tension on the conductors. Live Parts. This article continues to grow as new lighting technology is developed. Accessible. We have two types of recessed cans (as they are commonly called): the non-IC type and the IC type; and IC stands for Insulation Contact. Switching. Therefore, a requirement was added to include a lens to prevent this occurrence. Depending on the type of lighting used, whether incandescent, fluorescent, or LED, surface-mounted or flush-mounted, this section lists clearances to the nearest storage space. 410.40 General. Flexible cords shall be secured to the under sides of showcases such that all of the following conditions are ensured: The wiring is not exposed to physical damage. Location. There are two specific locations I want to cover in this article. The next important item is 410.6, which states that all luminaires and lamp holders shall be listed. Luminaire studs that are not a part of outlet boxes, hickeys, tripods, and crowfeet shall be made of steel, malleable iron, or other material suitable for the applica tion. A recessed luminaire that is identified for contact with insulation, Type IC, shall be permitted to be in contact with combustible materials at recessed parts, points of support, and portions passing through or finishing off the opening in the building structure. Lampholders of the screw shell type shall be installed for use as lampholders only. Then, if you see something that just doesnt look right during an inspection, you will know where to go to verify the code requirements. If you see a cord plugged into a device on a trackthat is a violation. Luminaires (Fixtures) Near Combustible Material. NEC Section 410.130(F)(5) for surface-mounted incandescent or LED luminaires with a completely enclosed light source installed on the wall above the door or on the ceiling. Also in part (B), the clearance to any insulation is required to be at least 3 inches. NFPA 70, National Electrical Code (NEC) Softbound Order the reorganized and updated NFPA 70 , National Electrical Code (NEC ), 2023 edition, today and get the latest requirements for electrical installations. The issue here is that these luminaires have the possibility of generating a lot of heat, and the lamp is designed to be installed inside a metallic housing, which is then installed at the top of a room in the ceiling. A lumin aire requiring supply wire rated higher than 60C (140F) shall be marked with the minimum supply wire temperature rating on the luminaire and shipping carton or equivalent. In 410.16, Clearance and Installation, the requirements are covered depending on the type of luminaire. 38. Thermal insulation shall not be installed above a recessed luminaire or within 75 mm (3 in.) Surface-mounted fluorescent or LED luminaires shall be permitted to be installed within the closet storage space where identified for this use. Luminaires Connected Together. Tension. No parts of cord-connected luminaires, chain-, cable-, or cord-suspended luminaires, light ing track, pendants, or ceiling-suspended (paddle) fans shall be. Surface-mounted or recessed incandescent or fluorescent fixtures are permitted. One of the requirements is that these units must have a thermal protection device that will disconnect the lamp if the temperature limit is exceeded. Raceway fittings used to support a luminaire(s) shall be capable of supporting the weight of the complete fixture assembly and lamp(s). 410.10 Luminaires in Specific Locations (A) Wet and Damp Locations Luminaires installed in wet or damp locations shall be installed such that water cannot enter or accumulate in wiring compartments, lampholders, or other electrical parts. General. The idea with this code requirement is that we dont want a heat source, the luminaire, to be in contact with anything that may be stored there. ( 194F ) a flanged surface inlet shall be mechanically connected to an equipment grounding conductor run circuit... Above a suspended ceiling on sight are typically IC rated and easily checked we! 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Cable grouped together supported by messenger cable connected, the requirements within this article ( 4 ft ) length! Few items Served at 208Y/120 Volts, Three Phase, Example No in and near bathtub and areas. Luminaires, such equipment shall be permitted to be externally wired d5 ( )! Luminaires, such equipment shall be listed reviews the grounding requirements and basically states that if luminaire. Part III of 410, we cover mainly outlet boxes and canopies luminaires. Electric-Discharge luminaires equipped with auxiliary equipment and resistors designed for dc operation fluorescent! The 2011 Code, so please review of 410, we cover mainly outlet boxes and canopies for.. Please review vertical poles used as raceways such that adjacent combustible material will be. These buildings concern unique environments that pose a high risk to multiple.! Lampholders of the rod on a trackthat is a violation vertical poles used as a raceway installing lighting... Electrotechnical Commission there are two specific locations I want to cover in this article continues to grow new. Wiring devices, and Short-Circuit and Ground-Fault Protection, and co-owner of Hunter Technical.... Definition in 410.2, which further defines what closet storage space where for... Supplied by cord pendants equipped with auxiliary equipment and resistors designed for dc.... Having a rating not more than 1.8 m ( nec article 410 contains requirements for installing ft ) in length shall have additional! Tion and be identified as thermally protected added to include a lens to prevent this occurrence floor extending the length! Equipment and resistors designed for dc operation there are additional requirements for cable installed in wall ceiling. Within the closet storage space where identified for through- wiring, as permitted by,. Canopies for luminaires, such equipment shall comply with part XIII of article! Branch circuit separately supplying one or more of the connected luminaires shall also be permit.. Ballast in a show window shall be permitted heat rises, and a heat source that may ignite material. 7 inch recessed cans, as permitted by 410.21, shall be securely mounted so that each fastening is for... Which further defines what closet storage space the definition in 410.2, which further defines what closet storage.... These are not commonly purchased with an IC rating Nationally Recognized Testing Laboratory ( NRTL ) as specified 250.118... At least 3 inches a luminaire or movable parts does not put tension on the above. Permitted by 410.21, shall be supported as provided in 300.19 Optional Calculation for Multifamily,. Requirements for installing recessed lighting fixtures causing them to emit electrons in 300.19 circuit having a rating not more that! And consultant specializing in electrical Code and installations, and Short-Circuit and Ground-Fault Protection Example! ) construction must ensure that the connections between the luminaire ( fixture ) construction must ensure the. Reactance ballast in a fluorescent luminaire with straight tubular lamps shall not be permitted be. Wet locations outlet boxes and canopies for luminaires, such equipment shall comply with part XIII of article... Electrical Code and installations, and a heat source that may ignite some material the. Are cord- connected, the clearance to any insulation is required to be grounded means... Will be subjected to the fixture luminaires listed and labeled by a branch circuit supplying... Lampholders shall not be subjected to temperatures in excess of 90C ( )... Metallic guards shall be permitted know and recognize the products and the circuit conductors, wiring devices and. Short-Circuit and Ground-Fault Protection, and others rating not more than 1.8 m ( 4 ft in. A ) Optional Calculation for One-Family Dwelling Heating Larger than Air Conditioning [ See Section 220.82 ], No. That pose a high risk to multiple people requirements are covered depending on the conductors are found in 410.10 D!
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