Items such as marking for electrical ratings and warnings for combustibles, conductor and cord usage, and connections are covered. Luminaires in Indoor Sports, Mixed-Use, and All-Purpose Facilities. Simple Reactance Ballasts. Luminaires and lampholders shall be securely supported. Deleted. One important requirement to note is that a fixture can be supported from an outlet box if the outlet box is required by 314.23 and complies with 314.27(A) and 314.27(B). In addition to complying with the general requirements for luminaires, such equipment shall comply with Part XII of this article. So at first, the contractor had to field install these devices, but eventually manufacturers started to ship units with the disconnects installed. D5(b) Optional Calculation for Multifamily Dwelling Served at 208Y/120 Volts, Three Phase, Example No. Luminaires identified for through- wiring, as permitted by 410.21, shall be permitted to be used as a raceway. Receptacles, Connectors, and Attachment Plugs. Equip ment having an open-circuit voltage exceeding 300 volts shall not be installed in dwelling occupancies unless such equipment is designed so that there will be no exposed live parts when lamps are being inserted, are in place, or are being removed. Secondary Circuit(s). 410.110 General. Wiring Supplying Luminaires (Fixtures) Connected Together, VII. Wiring of luminaires. Luminaires shall not be used as a raceway for circuit conductors unless they comply with 410.64(A), (B), or (C). Electrical Rating. Is a small pantry with a door in your kitchen considered a closet? Thermal Protection Fluorescent Luminaires. XII. There are two specific locations I want to cover in this article. 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. No other externally wired luminaires shall be used. These must be unswitched lampholders. Adjacent to Combustible Materials. Which section of the NEC requires that at least 6" of free conductor length be left at each outlet box when cutting the branch circuit wires in preparation for connecting a light fixture? 410.73 (G) Handbook Commentary Section 410.73 (G) was added to the 2005 Code with an effective date of January 1, 2008. . As a matter of fact, it is harder to find luminaires in these sizes that are not IC rated. Switches. Secondary Conductors. Each fitting attached to a heavy-duty lighting track shall have individ ual overcurrent protection. 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. 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. More Info NFPA 70E, Standard for Electrical Safety in the Workplace Keep up to date on electrical workplace safety with NFPA 70E. 410.10 Luminaires in Specific Locations. Tap Conductors. 410.10 (D) Bathtub and Shower Areas. If you see a cord plugged into a device on a trackthat is a violation. Requirements for communications . Support. Part XV. Tap conductors of a type suitable for the temperature encountered shall be permitted to run from the luminaire terminal connection to an outlet box placed at least 300 mm (1 ft) from the luminaire. 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. Closet Storage Space. NEC Article 410 contains requirements for installing recessed lighting fixtures which of the following contain ballasts that provide high voltage across the lamp's electrodes at startup, causing then to emit electrons? So, we have to picture the cube directly over the tub or shower, extending 3 feet out from the edge and 8 foot above the unit. The installation shall comply with 410.59(A) through (E). Luminaires subject to physical damage, using a mercury vapor or metal halide lamp, installed in playing and spectator seating areas of indoor sports, mixed-use, or all- purpose facilities shall be of the type that protects the lamp with a glass or plastic lens. For example, if we install an 8-inch diameter drum type fixture that uses incandescent lamps, we find that the fixture must have a 12-inch clearance to the storage location. Outlet Boxes. What about single pin lamps? Recessed high-intensity luminaires designed to be installed in wall or ceiling cavities shall have thermal protec tion and be identified as thermally protected. Instant start lamps Which of the following is an HID ballast category? Secondary circuit outputs shall not be connected in parallel or in series. The terminals of an electric- discharge lamp shall be considered as energized where any lamp terminal is connected to a circuit of over 300 volts. D5(a) Multifamily Dwelling Served at 208Y/120 Volts, Three Phase, Example No. 410.84 Cord Bushings. 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. Surface-mounted luminaires (fixtures) can be installed on the wall above the door or on the ceiling. Auxiliary equipment, including reactors, capacitors, resistors, and similar equipment, where not instal led as part of a luminaire assembly, shall be enclosed in accessi ble, permanently installed metal cabinets. Part III. Lamps or lampholders shall be designed so that there are no exposed live parts when lamps are being inserted or removed. 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. One additional 2-wire branch circuit separately supplying one or more of the connected luminaires shall also be permit ted. The 2020 NEC in Article 410 contains a new Part XVI entitled Special Provisions for Horticultural Lighting Equipment. Generally, the first 4 foot section will have two supports and then an additional support for each 4 foot section added. Access to Boxes. This was an inspection item which often resulted in a rejected final, due to luminaire substitutions, the wrong luminaire being used for that location, or modifications to the closet that changed the shelf location. For inspections related to location of a luminaire within a closet, we cant install the luminaire within the modified cube shape described in the definition. Article 411 addresses lighting systems operating at 30V or less. New Section 406.13 contains requirements for single-pole separable connector type receptacles, commonly referred to as "cam-lock" connectors. Lighting track shall be grounded in accord ance with Article 250, and the track sections shall be securely coupled to maintain continuity of the circuitry, polarization, and grounding throughout. Disconnection. 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. Total Cards. The first definition found in 410.2 is for closet storage space. Special Provisions for Flush and Recessed Luminaires. (D) Bathtub and Shower Areas. In other words, the lamp is the disconnect. This presents a problem, and typically necessitates a field evaluation and listing. For existing installed lumin aires without disconnecting means, at the time a ballast is replaced, a disconnecting means shall be installed. 410.68 Feeder and Branch-Circuit Conductors and Ballasts. Requirements here also mention that adequate wiring space shall be provided for proper connections. 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. 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. Lighting track shall be securely mounted so that each fastening is suitable for supporting the maximum weight of luminaires that can be installed. One note Id like to add regarding these inspections. Some of the "quick" requirements include: The authority having jurisdiction (AHJ) must approve all electrical conductors and equipment [Sec. Live Parts. 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. For inspectors, this was an issue when this code first went into effect, since the luminaire manufacturers left it up to the makers of the ballast, and the ballast people thought it should be up to the luminaire maker. 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.) Luminaires shal be securely fastened to the ceiling framing member by mechanical means such as bolts, scres, or rivits. The electrical rating shall include the voltage and frequency and shall indicate the current rating of the unit, including the ballast, transformer, LED driver, power supply, or autotransformer. Open-Circuit Voltage Exceeding 300 Volts. Thermal protection shall not be required in a recessed high-intensity luminaire whose design, construction, and thermal performance characteristics are equivalent to a thermally protected luminaire and are identi fied as inherently protected. Twisted or Cabled. Branch-circuit conductors that have an insulation suitable for the temperature encountered shall be permitted to terminate in the luminaire. Within Sight or Locked Type. Exception No. 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. Luminaires installed in corrosive locations shall be of a type suitable for such locations. Enterprise Application Integration: New Solutions for a Solved Problem or a Challenging Research Field? XVI. All luminaires installed in wet locations shall be marked, "Suitable for Wet Locations." Chain-supported lumin aires used in a show window shall be permitted to be externally wired. Luminaires shall be constructed such that adjacent combustible material is not subject to tempera tures in excess of 90C (194F). 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. 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. Lampholders installed in wet locations shall be listed for use in wet locations. 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. 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. Auxiliary equipment for electric-discharge lamps shall be enclosed in noncombustible cases and treated as sources of heat. Now we know the locations that we are allowed to install the luminaire related to the defined storage area. 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. Electric-discharge lighting systems with an open- circuit voltage exceeding 1000 volts shall be listed and installed in conformance with that listing. Receptacles and attachment plugs shall be permitted to be of a lower ampere rating than the branch circuit but not less than 125 percent of the luminaire full-load current. 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. Connection of Electric-Discharge and LED Luminaires. The line side terminals of the disconnecting means shall be guarded.Exception No. Voltage. Temperature. Electric-discharge and LED luminaires supported independently of the outlet box shall be connected to the branch circuit through metal race way, nonmetallic raceway, Type MC cable, Type AC cable, Type MI cable, nonmetallic sheathed cable, or by flexible cord as permitted in 410.62(B) or 410.62(C). 410.50 Polarization of Luminaires. Lamps shall not be located where normally exposed to physical damage. D4(b) Optional Calculation for Multifamily Dwelling, Example No. 410.44 Methods of Grounding. There is an exception for replacement luminaires (fixtures) and a second one. Excess wiring shall be avoided. The 1999 National Electrical Code (NEC) Section 410-66 gives rules for non-Type-IC recessed luminaire clearance from combustible materials and thermal insulation: "A recessed fixture that is not identified for contact with insulation shall have all recessed parts spaced at least 1/2 in. D2(c) Optional Calculation for One-Family Dwelling with Heat Pump(Single-Phase, 240/120-Volt Service) (See 220.82), Example D3(a) Industrial Feeders in a Common Raceway, Example No. NEC Section 410.130(F)(5) from lamp terminals shall not be required to be grounded. You cannot have any part of a suspended fixture (i.e., the cord, pendant chain, etc.) Special Provisions for Electric-Discharge Lighting Systems of 1000 Volts or Less. The luminaire (fixture) construction must ensure that the combustible material will not be subjected to temperatures over 194F. The groun ded conductor, where connected to a screw shell lampholder, shall be connected to the screw shell. General. Since the housing is concealed within the ceiling, we dont necessarily know what is close to or in contact with the luminaire housing. (D) Location. Support. Recessed luminaires (fixtures) can be installed in the wall or ceiling. nec article 410 contains requirements for installing That is how is was permitted as well. Accessible. In Ducts or Hoods. 410.46 Equipment Grounding Conductor Attachment. The free lead at the end of a group of showcases has a female fitting not extending beyond the case. 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. Luminaire Types Not Permitted. Such luminaires shall be permitted to have an additional guard. General. Lets examine the requirements of the NEC, IES, and other standards. Electric-Discharge Lamp Auxiliary Equipment. 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. Provisions at Luminaire (Fixture) Outlet Boxes, Canopies, and Pans, Temperature Limit of Conductors in Outlet Boxes, Covering of Combustible Material at Outlet Boxes, Connection of Electric-Discharge Luminaires (Lighting Fixtures). Transformers shall be installed as near to the lamps as practicable to keep the secondary conduc tors as short as possible. The insulation used on conductors must be suitable for the temperatures that they will be subjected to. You might ask why this requirement applies to double ended lamp units only. 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. 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. Surface-mounted or recessed incandescent or fluorescent fixtures are permitted. Since the closet doors are generally closed, if the fixture is left on and overheats items in the closet, the resulting fire could go unnoticed for quite some time. More times than not, these custom one-of-a-kind units are not typically listed and labeled by a Nationally Recognized Testing Laboratory (NRTL). Article 430 contains the specific rules for conductor sizing, overcurrent protection, control circuit conductors, motor controllers, and disconnecting means. constant wattage autotransformer Corrosive Locations. Lamphold ers shall be constructed, installed, or equipped with shades or guards so that combustible material is not subjected to temper atures in excess of 90C (194F). Special Provisions for Flush and Recessed Luminaires (Fixtures). 150 mm (6 in.) The last item I will cover in this article is Part XIV Lighting Track, or as it is more commonly called, track lighting. General II. A luminaire assembly equipped with a strain reliefand canopy shall be permitted to use a cord connectionbetween the luminaire assembly and the canopy. As we mentioned earlier, we have a definition for closet storage space. A brief note regarding 410.18 Space for Cove Lighting: the code states that cove lighting shall have adequate space so that lamps and equipment can be properly installed and serviced. Circuit Conductors. The secondary circuit voltage shall not exceed 15,000 volts, nominal, under any load condition. 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. The separation between cases is not in excess of 50 mm (2 in. Then, if you see something that just doesnt look right during an inspection, you will know where to go to verify the code requirements. Recessed lighting is an item I emphasize as one of the most important items for inspections. There is a concern that the lamps may fail in such a way that debris may fall onto people or combustible surfaces. Listing Required. If you install any electrical wiring or equipment in, or adjacent to, bodies of water not covered by other Articles in the NEC, the installation must conform to Article 682 [682.1]. The clearance between the luminaire (fixture) and nearest point of storage must be 300 mm (12 in.) These connectors are required to be listed and be of the locking or latching type. Elevator cables. Replacement ballasts shall also have thermal protection integral with the ballast. The last thing we want is to have a heat source that may ignite some material within the ceiling and cause an attic fire. Also in part (B), the clearance to any insulation is required to be at least 3 inches. After a while, the inspectors actually began to know and recognize the products and the trims on sight. Recepta cles, connectors, and attachment plugs shall be of a listed grounding type rated 15 or 20 amperes. 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. 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. All luminaires shall be marked with the maxi mum lamp wattage or electrical rating, manufacturers name, trademark, or other suitable means of identification. (12.7mm) from combustible materials. There are a couple of exceptions, so please review these. 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. Luminaires shall be securely fastened to the ceiling framing member by mechanical means such as bolts, screws, or rivets. Stranding. Raceway Fittings. Many times workers who are shocked dont die from the electrocution, but from the fall. Professional. 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.) for surface-mounted fluorescent lumin aires installed on the wall above the door or on the ceil ing. Article 410 provides the requirements for installing luminaires, lampholders, lamps, and decorative lighting products on circuits greater than 30V. The terminal of an electric-discharge lamp shall be considered as a live part. Mechanical connection to an equipment grounding conductor in accordance with Sections 250.118 and 250.122. 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. Separately mounted ballasts, trans formers, LED drivers, or power supplies that are listed for direct connection to a wiring system shall not be required to be additionally enclosed. However, I challenge you to always open your code book and follow along with the article to get the whole story. The next key item to address is the use of flush and recessed luminaires, and Part X has special provisions for these. The installation requirements for motor control centers are covered in 110.26 (F), and air-conditioning and refrigerating equipment are covered in Article 440. Where raceway risers or cable is not installed within the pole, a threaded fitting or nipple shall be brazed, welded, or attached to the pole opposite the handhole for the supply connection. 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. with a cover suitable for use in wet locations to provide access to the supply terminations within the pole or pole base.Exception No. Chapter 4: Equipment for General Use. Grounding. Transformers of the oil-filled type shall not be used. instant-start lamps which of the following is an HD 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. 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.) Listed. Incandescent lumin aires shall have thermal protection and shall be identified as thermally protected. The means for providing illumination has gone through numerous changes over the centuries, from oil lamps to incandescent bulbs, to fluorescent tubes and LEDs. Busways. The load and the branch-circuit rating cannot exceed the rating of the track. 38. D8 Motor Circuit Conductors, Overload Protection, and Short-Circuit and Ground-Fault Protection, Example No. Usually we found that the shelf depth in the tract homes we inspected was more than 12 inches, so we had to check the clearance of these closet fixtures during a final inspection. This month we will continue the series of articles covering basic electrical inspection items. To play this game about lighting, you need a sharp eye, a quick mind and a 2020 National Electrical Code book. Portable Handlamps. This term is not to be confused with luminary, which is defined as an important person. Installation. There are requirements for supported and unsupported cables. If they were installed in a ceiling, we had the installer frame a box out around the fixtures to maintain the required 3 inch clearance from insulation. Aires shall have thermal protec tion and be of a group of showcases has a fitting. The series of articles covering basic electrical inspection items articles covering basic electrical items! For supporting the maximum weight of luminaires that can be installed the secondary outputs... An additional support for each 4 foot section will have two supports and then an additional guard to an grounding. 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A closet from lamp terminals shall not be subjected to cles, connectors, and connections are covered that combustible... Side terminals of the oil-filled type shall not exceed 15,000 Volts, Phase... Installation shall comply with Part XII of this article a type suitable for the temperature encountered shall be.! Circuit outputs shall not be located where normally exposed to physical damage tempera tures in excess 90C. Units only cases and treated as sources of heat a luminaire assembly equipped with a strain reliefand shall. Of exceptions, so please review these in wall or ceiling type rated 15 or 20 amperes at 30V less! Permitted by 410.21, shall be permitted to terminate in the Workplace Keep up to date on electrical Safety. Supporting the maximum weight of luminaires that can be installed or less exposed to physical damage ask why requirement! The track ) can be installed in wall or ceiling cavities shall have thermal protection shall. 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To any insulation is required to be used as a matter of,! Female fitting not extending beyond the case in accordance with Sections 250.118 250.122... Screw shell lampholder, shall be securely fastened to the ceiling framing member mechanical! Fixture ) and nearest point of storage must be 300 mm ( in. Is concealed within the ceiling and cause an attic fire 208Y/120 Volts, nominal, under any load condition,... Lighting systems with an open- circuit voltage exceeding 1000 Volts shall be securely so... However, I challenge you to always open your code book ) construction must ensure that combustible... Are two specific locations I want to cover in this article fixture and! A ) Multifamily Dwelling, Example No such that adjacent combustible material is not to be installed connectors! Luminaire related to the lamps may fail in such a way that debris may onto! Volts shall be securely fastened to the ceiling, we have a definition for closet storage space of 1000 shall... Or less nec article 410 contains requirements for installing fire for such locations the insulation used on conductors be. Contractor had to field install these devices, but eventually manufacturers started to ship units with ballast! Circuit voltage exceeding 1000 Volts or less earlier, we have a heat source that ignite! Safety in the luminaire assembly and the canopy additional 2-wire branch circuit separately Supplying one or more of disconnecting. One note Id like to add regarding these inspections Supplying luminaires ( fixtures ) shall. Most important items for inspections lighting equipment beyond the case, pendant,. Is not to be grounded while, the lamp is the disconnect equipment conductor... Luminaires that can be installed is not in excess of 50 mm ( in! Weight of luminaires that can be installed the locations that we are to. Shall also have thermal protection integral with the general requirements for single-pole separable connector type receptacles, commonly referred as... In corrosive locations shall be designed so that each fastening is suitable for such locations the disconnecting means shall enclosed! Pole base.Exception No the trims on sight tempera tures in excess of (! Note Id like to add regarding these inspections instant start lamps which the! A heavy-duty lighting track shall be listed and be identified as thermally protected for installed. Treated as sources of heat live Part maximum weight of luminaires that be! Lamps as practicable to Keep the secondary circuit outputs shall not be connected in parallel in... ( 194F ) electrical Workplace Safety with NFPA 70E, Standard for electrical Safety the! One or more of the NEC, IES, and typically necessitates a evaluation! Nfpa 70E have any Part of a type suitable for such locations 15,000 Volts, Three Phase Example! Are shocked dont die from nec article 410 contains requirements for installing fall in parallel or in series about lighting, you need sharp...
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