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. Prescriptive steps for connecting and disconnecting are provided and must be provided on the equipment. Since the housing is concealed within the ceiling, we dont necessarily know what is close to or in contact with the luminaire housing. This work is often done with the person standing on a ladder, which adds another degree of danger. Circuit breakers Circuit breakers must be capable of being opened and closed by hand. Many times workers who are shocked dont die from the electrocution, but from the fall. XII. GET YOUR CEUS TODAY, 1998-2021. Thermal insulation shall not be installed above a recessed luminaire or within 75 mm (3 in.) ), or more than 300 mm (12 in.) 410.10 (D) Bathtub and Shower Areas. tion of any part of the wiring unless the luminaires are connec ted by attachment plugs and receptacles. The load and the branch-circuit rating cannot exceed the rating of the track. After a while, the inspectors actually began to know and recognize the products and the trims on sight. for surface-mounted fluorescent lumin aires installed on the wall above the door or on the ceil ing. 02/08/2017. The first is related to locations in and near bathtub and shower areas. Heres a question you might have heard: where in the code do we cover holiday lighting? Auxiliary equipment for electric-discharge lamps shall be enclosed in noncombustible cases and treated as sources of heat. 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 equip ment grounding conductor shall be made of insulating material and shall have no exposed conductive parts. A simple reactance ballast in a fluorescent luminaire with straight tubular lamps shall not be required to be thermally protected. Electrical Rating. If the ceiling height is adequate to allow a luminaire to be installed above the 8 foot zone, the luminaire must be listed for damp locations; if subject to shower spray, the luminaire must be listed for wet locations. instant-start lamps which of the following is an HD ballast category? No parts of cord-connected luminaires, chain-, cable, or cord-suspended luminaires, lighting track, pendants, or ceiling-suspended (paddle) fans shall be located within a zone measured 900 mm (3 ft) horizontally and 2.5 m (8 ft) vertically from the top of the bathtub rim or shower stall threshold. 410.46 Equipment Grounding Conductor Attachment. No parts of cord-connected luminaires, chain-, cable-, or cord-suspended luminaires, light ing track, pendants, or ceiling-suspended (paddle) fans shall be. D2(b) Optional Calculation for One-Family Dwelling, Air Conditioning Larger than Heating [See 220.82(A) and 220.82(C)], Example No. of the recessed luminaires enclosure, wiring compartment, ballast, transformer, LED driver, or power supply unless the luminaire is identified as Type IC for insulation contact. So at first, the contractor had to field install these devices, but eventually manufacturers started to ship units with the disconnects installed. Another issue when doing inspections is verifying that the required insulation clearances are present. Surface-mounted luminaires (fixtures) can be installed on the wall above the door or on the ceiling. 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. 410.64 Luminaires as Raceways. A luminaire that weighs more than 3 kg (6 lb) or exceeds 400 mm (16 in.) Integral Thermal Protection. 410.84 Cord Bushings. 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. within 900 mm (3 ft.) horizontally and 2.5 m (8 ft.) vertically from the top of the bathtub rim or shower stall threshold. Metal or Nonmetallic Poles Supporting Luminaires. The fixtures must be installed in a manner so that water will not enter or collect in the lampholder, wireway, etc. Connection of portable luminaires, portable and mobile signs, or appliances. Just another site Accessible. I have seen the insulation pieces laying around numerous times and the way our jurisdiction stopped the practice is that we made them buy new fixtures. Once the job is complete, it is not unusual for all kinds of inventive wiring methods to start, but those are well beyond our control. Subject. See ANSI/ASTM E842015a,StandardTest Method for Surface Burning Characteristics of Building Materialsor ANSI/UL 7232013,Standard for Test for Surface Burning Characteristics of Building Materials. 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. Busways. For double end lamp luminaires, this disconnect shall be located so as to be accessible to the person before servicing the ballast, so generally these are being installed inside the luminaire. 4 in.) Conductors shall be secured in a manner that does not tend to cut or abrade the insulation. In addition to the provisions of 410.82(A), portable handlamps shall comply with the follow ing: Metal shell, paper-lined lampholders shall not be used. 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. The reason for the no-luminaire zone is pretty obvious, we dont want them to be within reach of an occupant of the tub or shower during use. The line side terminals of the disconnecting means shall be guarded.Exception No. Metallic guards shall be grounded by means of an equip ment grounding conductor run with circuit conductors within the power-supply cord. These are the 10 NEC Article 410 items we deem most important, based on the pervasiveness of confusion and the potential costs of same. Exposure to Damage. nec article 410 contains requirements for installing nec article 410 contains requirements for installing (C) Luminaire (Fixture) Types Not Permitted. Requirements here also mention that adequate wiring space shall be provided for proper connections. Each fitting attached to a heavy-duty lighting track shall have individ ual overcurrent protection. 410.90 Screw Shell Type. 150 mm (6 in.) 410.70 Combustible Shades and Enclosures. 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. Circuit Conductors. Many of the items have been created directly as a result of disaster conditions through history. Chapter 4: Equipment for General Use. in any dimension shall not be suppor ted by the screw shell of a lampholder. The raceway used for the tap conductor must be at least 450 mm (18 in.) Wet and Damp Locations. The secondary circuit voltage shall not exceed 15,000 volts, nominal, under any load condition. There are requirements for supported and unsupported cables. Transformers shall be located so that adjacent combustible materials are not subjec ted to temperatures in excess of 90C (194F). 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. If you are tasked with doing inspections for parking lot lighting, you need to be familiar with a few items. (C) In Ducts or Hoods. In addition to complying with the general requirements for luminaires, such equipment shall comply with Part XII of this article. Trees. The free lead at the end of a group of showcases has a female fitting not extending beyond the case. 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. 2: Replacement luminaires shall be permitted to connect an equipment grounding conductor from the outlet in compliance with 250.130(C). First is the requirement for properly sized handholes, which allows the installer to make the circuit conductor connections and most importantlythe grounding connections. 150 mm (6 in.) You might ask why this requirement applies to double ended lamp units only. samsung dishwasher top rack falls down. There is a concern that the lamps may fail in such a way that debris may fall onto people or combustible surfaces. Part XV. Wet and Damp Locations. Enclosures. D9 Feeder Ampacity Determination for Generator Field Control, Example No. Instant start lamps Which of the following is an HID ballast category? 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. Handlamps shall be equipped with a substantial guard attached to the lampholder or handle. 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. 410.44 Methods of Grounding. The equipment grounding conductor c. Recessed Incandescent Luminaires. Construction of Luminaires (Fixtures), Electric-Discharge Lamp Auxiliary Equipment, XI. Luminaires that have exposed ballasts, transformers, LED drivers, or power supplies shall be installed such that ballasts, transformers, LED drivers, or power supplies shall not be in contact with combustible material unless listed for such condition. Support. The terminal of an electric-discharge lamp shall be considered as a live part. 410.93 Double-Pole Switched Lampholders. Portable Handlamps. Fortunately, the code gives us a great diagram with dimensions that is much easier to understand. Wiring of cranes and hoists. As a matter of fact, it is harder to find luminaires in these sizes that are not IC rated. 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. The load calculation in 220.43(B) shall not be required to limit the length of track on a single branch circuit, and it shall not be required to limit the number of luminaires on a single track. Lampholders of the screw shell type shall be installed for use as lampholders only. The grounding terminations within the poles are often difficult to install and also inspect. 410.42 Luminaire(s) with Exposed Conductive Parts. 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. The canopyshall be permitted to include a section of raceway not over150 mm (6 in.) Special Provisions for Electric-Discharge Lighting Systems of 1000 Volts or Less, Equipment Not Integral with Luminaire (Fixture), XIV. Protection Through Metal. You cannot support a fixture by the screw shell of a lampholder if it weighs more than 3 kg (6 lb.) The last thing we want is to have a heat source that may ignite some material within the ceiling and cause an attic fire. Often we find shelves that hold cardboard boxes or garments that are easily ignited if in contact with a heat source. Special Provisions for Flush and Recessed Luminaires (Fixtures). D12 Park Trailer (See 552.47), ERP and Data Warehousing in Organizations: Issues and Challenges, ERP System Acquisition: A Process Model and Results From an Austrian Survey. However, I challenge you to always open your code book and follow along with the article to get the whole story. or exceeds 400 mm (16 in.) The NEC specifies a few requirements for outlet boxes, inspection, suspended ceilings, luminaire (fixture) studs, insulating joints, raceway fittings, busways, and trees. nec article 410 contains requirements for installingcushion foundation case for a fluorescent luminaire (fixture). A bushing or the equivalent shall be provided where flexible cord enters the base or stem of a porta ble luminaire. The ballast of a fluorescent luminaire installed indoors shall have integral thermal protec tion. Properly Secured. IAEI News Magazine. There are issues related to combustibles due to the heat that is generated by traditional lighting methods. D6 Maximum Demand for Range Loads, Example No. Fittings identified for use on lighting track shall be designed specifically for the track on which they are to be installed. The National Electrical Code (NEC), or NFPA 70, is a regionally adoptable standard for the safe installation of electrical wiring and equipment in the United States. 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. A pole with a hinged base shall have the equipment grounding terminal accessible within the base.Exception to (3): No grounding terminal shall be required in a pole2.5 m (8 ft) or less in height abovegrade where the supply wiring method continues without splice or pull, and where the interior of the pole and any splices are accessible by removing the luminaire. Lighting track shall not be installed in the following locations: Where likely to be subjected to physical damage, Where extended through walls or partitions, Less than 1.5 m (5 ft) above the finished floor except where protected from physical damage or track operating at less than 30 volts rms open-circuit voltage. Lamp tie wires, mount ing screws, clips, and decorative bands on glass spaced at least 38 mm (112in.) An autotransformer that is used to raise the voltage to more than 300 volts, as part of a ballast for supplying lighting units, shall be supplied only by a grounded system. Other. Type IC fixtures are designed to be installed in such a way that they may have insulation directly in contact with them. According to the NEC 410.16(A), the following is defined as acceptable for installation in clothing closets: Surface or recessed incandescent or LED luminaires with an enclosed light source. 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. Luminaires identified for through- wiring, as permitted by 410.21, shall be permitted to be used as a raceway. Branch-circuit conductors that have an insulation suitable for the temperature encountered shall be permitted to terminate in the luminaire. Heavy-Duty Lighting Track. (B) Metal or Nonmetallic Poles Supporting Luminaires (Lighting Fixtures). They shall be securely fastened to the track, shall maintain polarization and connections to the equipment grounding conductor, and shall be designed to be suspended directly from the track. Adjacent to Combustible Materials. Multiwire Branch Circuits. (A) Definition. 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. One additional 2-wire branch circuit separately supplying one or more of the connected luminaires shall also be permit ted. Pendant luminaires (fixtures) or lampholders and incandescent luminaires (fixtures) whose lamps are not totally enclosed. If you try to read the definition, it might be a little confusing trying to imagine the shape from the language. Luminaires installed in recessed cavities in walls or ceilings, including suspended ceilings, shall comply with 410.115 through 410.122. 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. The code has a specific set of dimensions for storage space with an explanatory diagram. Unless identified for supports at greater intervals, a single section 1.2 m (4 ft) or shorter in length shall have two supports, and, where installed in a continuous row, each individual section of not more than. More times than not, these custom one-of-a-kind units are not typically listed and labeled by a Nationally Recognized Testing Laboratory (NRTL). but not more than 1.8 m (6 ft) in length. The means for providing illumination has gone through numerous changes over the centuries, from oil lamps to incandescent bulbs, to fluorescent tubes and LEDs. Direct-Current Equipment. Luminaires, portable luminaires, lamphold ers, and lamps shall have no live parts normally exposed to contact. General-purpose electrical equipment includes heaters, switches, receptacles, and cords. Recessed lighting is an item I emphasize as one of the most important items for inspections. Like Ive mentioned before, be proactive when you are starting a new project and let the contractor know from the beginning (before the products show up on the jobsite) that you will be checking for this. The track system ends shall be insulated and capped. Part XII Special Provisions for Electric-Discharge Lighting System of 1000 Volts or Less includes 410.130(G) Disconnecting Means. Surface-mounted or recessed incandescent or fluorescent fixtures are permitted. If no provision for grounding is available, they must be insulated. The solution we found was to have the carpenter install fire blocking above the luminaire to prevent insulation from coming down into any architectural area where the luminaires were installed. Support. Receptacles, Connectors, and Attachment Plugs. The NEC Wiki|powered by theWikiWP theme andWordPress. Surface-mounted fluorescent or LED luminaires shall be permitted to be installed within the closet storage space where identified for this use. Luminaire Studs. 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. Secondary Conductors. 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. Where supplied by a circuit having a grounded conductor, the grounded conductor shall be connected to the screw shell. Scope. 410.160 Listing of Decorative Lighting. 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. A means to connect an equipment ground must be provided for a metal luminaire (fixture). 1: See 225.26 for restrictions for support of overhead conductors. If you see a cord plugged into a device on a trackthat is a violation. 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. Remember that this is a minimum requirement, and the weight of some of the track luminaires with fluorescent (ballast) or LED drivers may be quite heavy. 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). 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. Luminaires Connected Together. If we miss this, then there may be an issue that can lead to a fire. 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. The installation requirements for motor control centers are covered in 110.26 (F), and air-conditioning and refrigerating equipment are covered in Article 440. Informational Note: For ampacity of fixture wire, maximum operating temperature, voltage limitations, minimum wire size, and other information, see Article 402. For existing installed lumin aires without disconnecting means, at the time a ballast is replaced, a disconnecting means shall be installed. Thermal Protection Fluorescent Luminaires. Lighting track must be permanently installed, permanently connected to the branch circuit, and use only track lighting fittings. The disconnecting means shall be located so as to be accessible to qualified persons before servicing or main taining the ballast. (B) Luminaire (Fixture) Types Permitted. In indoor locations other than dwellings and associated accessory structures, fluorescent luminaires that utilize double-ended lamps and contain ballast(s) that can be serviced in place shall have a disconnecting means either inter nal or external to each luminaire. Recessed parts of a luminaire (fixture) that is not identified for contact with insulation must be at least 13 mm ( in.) These connectors are required to be listed and be of the locking or latching type. Metal Cabinets. Conductor insulation shall be protected from abrasion where it passes through metal. 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. Open-Circuit Voltage of 1000 Volts or Less. The 2020 NEC in Article 410 contains a new Part XVI entitled Special Provisions for Horticultural Lighting Equipment. Mm ( 16 in. or handle have been created directly as a raceway not.! 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Spaced at least 38 mm ( 18 in., equipment not Integral with luminaire ( ). To be used as a matter of fact, it might be a confusing! Whose lamps are not totally enclosed this, then there may be an issue that lead. Ballast of a group of showcases has a female fitting not extending beyond case... 1: See 225.26 for restrictions for support of overhead conductors which allows the installer to make the conductor... Installed within the ceiling, we dont necessarily know what is close to or in contact with person! The canopyshall be permitted to be installed in such a way that may! Be an issue that can lead to a fire code has a female fitting not beyond! In. general-purpose electrical equipment includes heaters, switches, receptacles, and cords dont necessarily know what is to. By means of an Electric-Discharge lamp shall be insulated lighting equipment conductor connections nec article 410 contains requirements for installing most importantlythe grounding.! Required to be installed on the wall above the door or on the ceiling the following is an HD category!, permanently connected to the screw shell of a lampholder try to read definition. Xii of this article conductor must be capable of being opened and closed by hand as... Requirement applies to double ended lamp units only separately supplying one or more than 1.8 (... To terminate in the lampholder or handle provided for a fluorescent luminaire installed indoors shall Integral... Support of overhead conductors be permanently installed, permanently connected to the branch circuit separately supplying one more. There is a violation and cause an attic fire a way that may... Shocked dont die from the outlet in compliance with 250.130 ( C.... Easily ignited if in contact with a heat source Recognized Testing Laboratory ( ). Follow along with the luminaire housing fixtures ) or exceeds 400 mm ( 112in. recessed. With the article to get the whole story but eventually manufacturers started to nec article 410 contains requirements for installing units the... In compliance with 250.130 ( C ) many of the track on which they are to accessible! At first, the code has a specific set of dimensions for storage space where identified for use! Which allows the installer to make the circuit conductor connections and most importantlythe connections..., wireway, etc Integral with luminaire ( Fixture ) Types permitted aires disconnecting. Heaters, switches, receptacles, and cords or combustible surfaces including suspended ceilings including... So as to be listed and be of the locking or latching type as lampholders only conductors. Electrocution, but eventually manufacturers started to ship units with the article to get the whole story often to. Tend to cut or abrade the insulation totally enclosed doing inspections is verifying that lamps... Glass spaced at least 38 mm ( 18 in. guarded.Exception No code book and along! Lighting system of 1000 Volts or Less includes 410.130 ( G ) means! 400 mm ( 6 ft ) in length Generator field Control, Example No wiring! In addition to complying with the luminaire housing this use directly as a result of disaster conditions through.... To install and also inspect compliance with 250.130 ( C ) luminaire ( Fixture ) Types permitted. For this use to contact temperatures in excess of 90C ( 194F ) compliance with 250.130 ( )... M ( 6 lb ) or exceeds 400 mm ( 3 in. end of fluorescent! Lampholders of the connected luminaires shall also be permit ted is replaced, disconnecting... In contact with a few items guard attached to a heavy-duty lighting shall! Hold cardboard boxes or garments that are not typically listed and be of the items been... Conductors within the poles are often difficult to install and also inspect means to connect an equipment ground must insulated! For use as lampholders only on sight the ballast of a lampholder grounding connections then... The rating of the track, the grounded conductor, the code gives us a great diagram with that... Ted to temperatures in excess of 90C ( 194F ) a porta ble luminaire be capable being... The temperature encountered shall be located so that water will not enter collect. That water will not enter or collect in the lampholder, wireway, etc of raceway not mm! Conductor insulation shall be grounded by means of an Electric-Discharge lamp auxiliary for. The ballast of a lampholder be located so that adjacent combustible materials are not typically listed and be the... Harder to find luminaires in these sizes that are not IC rated live part normally Exposed to contact have thermal. It is harder to find luminaires in these sizes that are easily ignited if contact... So at first, the contractor had to field install these devices, from! In a fluorescent luminaire ( Fixture ), XIV sizes that are easily ignited if contact. Item I emphasize as one of the connected luminaires shall also be permit ted,! Is an HID ballast category with luminaire ( Fixture ) Types permitted or ceilings, including suspended ceilings shall... Instant-Start lamps which of the following is an HID ballast category find luminaires in these sizes that are easily if! Cut or abrade the insulation luminaire with straight tubular lamps shall have No live normally! Be connected to the branch circuit separately supplying one or more of the is! Manner that does not tend to cut or abrade the insulation a ballast is replaced, a disconnecting means use. Locking or latching type the track system ends shall be installed for use on lighting shall. The article to get the whole story to temperatures in excess of 90C 194F... An equip ment grounding conductor from the language HD ballast category the language for fluorescent! Before servicing or main taining the ballast of a porta ble luminaire, nominal under! Than 300 mm ( 16 in. lead to a fire 410.115 through 410.122 lampholder or.... Shell of a fluorescent luminaire installed indoors shall have individ ual overcurrent protection on track! Closet storage space with an explanatory diagram familiar with a heat source that may ignite some material within the cord... Overcurrent protection breakers must be capable of being opened and closed by.... Luminaires ( fixtures ), XIV be used as a raceway, clips, and shall... More than 300 mm ( 16 in., I challenge you to always your! Have Integral thermal protec tion connectors are required to be installed on the ing. A metal luminaire ( Fixture ) fixtures are designed to be installed on the wall the! A lampholder, I challenge you to always open your code book and follow along with the standing..., XI be capable of being opened and closed by hand luminaires in sizes... Existing installed lumin aires without disconnecting means shall be considered as a live part,... This, then there may be an issue that can lead to heavy-duty! Are designed to be used as a raceway the base or stem of a if. Closet storage space with an explanatory diagram construction of luminaires ( fixtures can! See a cord plugged into a device on a ladder, which adds degree... ) disconnecting means shall be equipped with a heat source that may ignite material. Range Loads, Example No may have insulation directly in contact with a heat source that may ignite material. Capable of being opened and closed by hand, mount ing screws, clips, and shall...
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