Special Provisions for Flush and Recessed Luminaires (Fixtures). Special bases or other devi ces shall be used for over 1500 watts. 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. 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. 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.) The first requirement is that it is to be installed permanently and permanently connected to a branch circuit. 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. 410.18 Space for Cove Lighting. Since the housing is concealed within the ceiling, we dont necessarily know what is close to or in contact with the luminaire housing. Enclosures. The separation between cases is not in excess of 50 mm (2 in. Where they are not internal, they shall be a single device and attached to the luminaire or within sight. instant-start lamps which of the following is an HD ballast category? 410.160 Listing of Decorative Lighting. However, the only requirements for luminarie installations in closets appear in section 410.16, which specifically addresses luminaires in clothes closets. The connected load on lighting track shall not exceed the rating of the track. 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? Lampholders of the screw shell type shall be installed for use as lampholders only. 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. Normally, luminaires (fixtures) cannot be used as raceways. Outlet Boxes. All luminaires, lampholders, and retrofit kits shall be listed. 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. Conductors in vertical poles used as raceway shall be supported as provided in 300.19. Fastening. 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. While it may be possible to list them together, I havent seen a fixture that is listed for another manufacturers trims. Total Cards. Raceway Fittings. on either side of the rod on a plane horizontal to the floor extending the entire length of the rod. (C) In Ducts or Hoods. If they dont say IC Rated on the luminaire, then the inspector should make sure there is a definite method to prevent insulation ever coming into contact with the luminaire. 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). Chapter 4 of the National Electrical Code (NEC), Equipment for General Use, contains 22 articles. Receptacles, Connectors, and Attachment Plugs. Recessed Incandescent Luminaires. Luminaires shall be wired with conductors having insulation suitable for the environmental conditions, current, voltage, and temperature to which the conductors will be subjected. If the wiring system provides a means of grounding, exposed conductive parts must be grounded. The purpose of the NEC is to provide electrical installation requirements that protect persons and property from electrical hazards arising from the use of electricity. Corrosive Locations. When these 4 inch units are IC rated, they look like a can within a box design, and they are typically more expensive when compared to the non-IC rated units. Wiring Supplying Luminaires (Fixtures) Connected Together, VII. Transformers of the oil-filled type shall not be used. Generally, the first 4 foot section will have two supports and then an additional support for each 4 foot section added. Part XII. Fixtures and lampholders must be securely supported. Refer to 310.15 or 310.60 for 14 AWG and larger conductors. 150 mm (6 in.) Luminaires installed in recessed cavities in walls or ceilings, including suspended ceilings, shall comply with 410.115 through 410.122. The next key item to address is the use of flush and recessed luminaires, and Part X has special provisions for these. The main item I want to cover here is the poles used to mount area lighting. 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. (D) Bathtub and Shower Areas. 410.93 Double-Pole Switched Lampholders. Metallic guards shall be grounded by means of an equip ment grounding conductor run with circuit conductors within the power-supply cord. Part IV is titled Luminaire Supports. Installation. Snap switches shall comply with 404.14. The track conductors shall be a minimum 12 AWG or equal and shall be copper. As we mentioned earlier, we have a definition for closet storage space. Temperature Limit of Conductors in Outlet Boxes. Support. The means for providing illumination has gone through numerous changes over the centuries, from oil lamps to incandescent bulbs, to fluorescent tubes and LEDs. Special Provisions for Electric-Discharge Lighting Systems of 1000 Volts or Less. In 410.16, Clearance and Installation, the requirements are covered depending on the type of luminaire. The electrical service equipment b. Lumin aires with exposed metal parts shall be provided with a means for connecting an equipment grounding conductor for such luminaires. Electric-discharge luminaires provided with mogul-base, screw shell lampholders shall be permitted to be connected tobranch circuits of 50 amperes or less by cords complying with240.5. Direct-Current Equipment. Lampholders of the screw shell type shall be of porcelain or other suitable insulating materials. 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. Luminaires shall be wired so that the screw shells of lampholders are connected to the same luminaire or circuit conductor or terminal. D4(b) Optional Calculation for Multifamily Dwelling, Example No. Transformers shall be located so that adjacent combustible materials are not subjec ted to temperatures in excess of 90C (194F). External wiring is not permitted except chain-supported luminaires (fixtures). Please take time to read the scope of this article in 410.1. Raceway fittings used to support a luminaire(s) shall be capable of supporting the weight of the complete fixture assembly and lamp(s). Some of the articles include provisions pertaining to switches, receptacles, switchboards and panelboards, industrial control panels, luminaires, appliances, air-conditioning and refrigeration equipment, and transformers. Canopies and outlet boxes taken together shall provide sufficient space so that luminaire conductors and their connecting devices are capable of being installed in accordance with 314.16. Auxiliary equipment for electric-discharge lamps shall be enclosed in noncombustible cases and treated as sources of heat. Conductors shall be arranged so that they are not subjected to tempera tures above those for which they are rated. This month we will continue the series of articles covering basic electrical inspection items. Exception No. Locations Not Permitted. Construction. Where the disconnecting means is external to the luminaire, it shall be a single device, and shall be attached to the luminaire or the luminaire shall be located within sight of the disconnecting means. General. Exit Luminaires. The second location to cover in detail is clothes closets, which is found in 410.16. However, the requirements within this article are important to know and enforce. Luminaires 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). Luminaires (Fixtures) in Specific Locations. 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. Fire-Resistant Construction. Equipped with Flanged Surface Inlet. Access to Boxes. The incandescent fixture must have a completely enclosed lamp. nec article 410 contains requirements for installing nec article 410 contains requirements for installing Switches. 410.36 (B) Suspended ceilings Framing members of suspended ceiling systems used to support luminaires shall be securely fastened to each other and shal be securely attached to the building structure at appropriate intervals. Luminaires shall be constructed such that adjacent combustible material is not subject to tempera tures in excess of 90C (194F). These luminaries are commonly worked on without the removal of power, thus creating a shock hazard to the person performing the work. Trees. 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. 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. A ballast in a fluorescent exit luminaire shall not have thermal protection. 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. All luminaires shall be marked with the maxi mum lamp wattage or electrical rating, manufacturers name, trademark, or other suitable means of identification. 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. Handlamps shall be equipped with a substantial guard attached to the lampholder or handle. They look the same in size and design, especially during construction. The track system ends shall be insulated and capped. 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. Luminaires shall be installed such that the connections between the luminaire conductors and the circuit conductors can be inspected without requiring the disconnec. There is an exception for replacement luminaires (fixtures) and a second one. Disconnection. Luminaires shall be permitted to be connected to busways in accordance with 368.17(C). 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. What about single pin lamps? A metal pole with a hinged base shall have the hinged base and pole bonded together. Recessed lighting is an item I emphasize as one of the most important items for inspections. Equipment that has an open- circuit voltage exceeding 1000 volts shall not be installed in or on dwelling occupancies. Metal Halide Lamp Containment. Busways. Protection Through Metal. 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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. 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. After a while, the inspectors actually began to know and recognize the products and the trims on sight. A means to connect an equipment ground must be provided for a metal luminaire (fixture). This location is permitted only in nonresidential cooking areas and is subject to four specific conditions. Wet and Damp Locations. Metal raceways or other equipment grounding conduc tors shall be bonded to the metal pole with an equipment grounding conductor recognized by 250.118 and sized in accordance with 250.122. Exposed Components. 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. in any dimension. No parts of cord-connected luminaires, chain-, cable-, or cord-suspended luminaires, light ing track, pendants, or ceiling-suspended (paddle) fans shall be. This is usually not an issue on 6 or 7 inch recessed cans, as they are typically IC rated and easily checked. IAEI News Magazine. Metal Cabinets. 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. You cannot have any part of a suspended fixture (i.e., the cord, pendant chain, etc.) Transformers shall be accessible after installa tion. Pendant lampholders with permanently attached leads, where used for other than festoon wiring, shall be hung from separate stranded rubber-covered conductors that are soldered directly to the circuit conductors but suppor ted independently thereof. Just another site There are two specific locations I want to cover in this article. Luminaires Near Combustible Material. | RSS, Annex J ADA Standards for Accessible Design, Annex I Recommended Tightening Torque Tables from UL Standard 486A-B, Informative Annex G Supervisory Control and Data Acquisition (SCADA), Annex F Availability and Reliability for Critical Operations Power Systems; and Development and Implementation of Functional Performance Tests (FPTs) for Critical Operations Power Systems, Informative Annex B Application Information for Ampacity Calculation. 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. Lighting track must be permanently installed, permanently connected to the branch circuit, and use only track lighting fittings. 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. Listing. More Info NFPA 70E, Standard for Electrical Safety in the Workplace Keep up to date on electrical workplace safety with NFPA 70E. Requirements for communications . Temperature. This presents a problem, and typically necessitates a field evaluation and listing. Transformers shall be enclosed, identified for the use, and listed. Lets examine the requirements of the NEC, IES, and other standards. Provisions at Luminaire Outlet Boxes, Canopies, and Pans. Listed. 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 load and the branch-circuit rating cannot exceed the rating of the track. However, I challenge you to always open your code book and follow along with the article to get the whole story. See Figure 410.2. 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. No Other Equipment. Voltage. Wiring methods and materials supplying the luminaire(s) shall not be exposed within the cooking hood. All recessed incandescent luminaires (fixtures) must have thermal protection. Luminaires Connected Together. Parts that must be removed for lamp replacement shall be hinged or held captive. He holds ten inspections certifications from IAEI and ICC. Cord Requirements. 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. 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. Handlamps shall be equipped with a handle of molded composition or other insulating material. 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. (A) Definition. 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. There are a couple of exceptions, so please review these. Lamps shall not be located where normally exposed to physical damage. Equipment other than showcases shall not be electrically connected to showcases. Article 410 provides the requirements for installing luminaires, lampholders, lamps, and decorative lighting products on circuits greater than 30V. Independent of the Outlet Box. 410.50 Polarization of Luminaires. 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. 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. Surface-mounted or recessed incandescent or fluorescent fixtures are permitted. Wet and Damp Locations. Listing Required. Elevator cables. It is part of the National Fire Code series published by the National Fire Protection Association (NFPA), a private trade association. Separate Mounting. 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. between the first case and the supply receptacle. The installation requirements for motor control centers are covered in 110.26 (F), and air-conditioning and refrigerating equipment are covered in Article 440. 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? Now we know the locations that we are allowed to install the luminaire related to the defined storage area. Through-Wiring. Luminaires and lampholders shall be securely supported. Article 411 addresses lighting systems operating at 30V or less. 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). Luminaires identified for through- wiring, as permitted by 410.21, shall be permitted to be used as a raceway. 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. Exception No. Metal or Nonmetallic Poles Supporting Luminaires. Lighting track shall be securely mounted so that each fastening is suitable for supporting the maximum weight of luminaires that can be installed. 02/08/2017. Conductors shall be secured in a manner that does not tend to cut or abrade the insulation. 410.70 Combustible Shades and Enclosures. Wiring of cranes and hoists. In addition to complying with the general requirements for luminaires, such equipment shall comply with Part XII of this article. 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. Exposed metal parts shall be connected to an equipment grounding conductor or insulated from the equipment grounding conductor and other conducting surfaces or be inaccessible to unqualified personnel. Where supplied by the ungrounded conduc tors of a circuit, the switching device of auxiliary equipment shall simultaneously disconnect all conductors. Scope. (B) Luminaire (Fixture) Types Permitted. The equipment grounding conductor c. (A) Wet and Damp Locations. Electrical Rating. Combustible Material. Where a luminaire is recessed in fire-resistant material in a building of fire-resistant construction, a temperature higher than 90C (194F) but not higher than 150C (302F) shall be considered acceptable if the luminaire is plainly marked for that service. Components of lighting track systems of different voltages shall not be inter changeable. The ballast of a fluorescent luminaire installed indoors shall have integral thermal protec tion. 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. It is part of the National Fire Code series published by the National Fire Protection Association (NFPA), a private trade association. 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. Considered as Energized. Adequate airspace shall be provided between lamps and shades or other enclosures of combustible material. 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. Live Parts. or exceeds 400 mm (16 in.) Secondary Connections. 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. Luminaires and lighting equipment shall be grounded as required in Article 250 and Part V of this article. All of the electrical equipment and enclosures must be specifically approved for the location [682.10]. Insulating joints that are not designed to be mounted with screws or bolts shall have an exterior metal casing, insulated from both screw connections. (12.7mm) from combustible materials. Therefore, a requirement was added to include a lens to prevent this occurrence. 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. for surface-mounted incandescent or LED luminaires with a completely enclosed light source installed on the wall above the door or on the ceiling. Twisted or Cabled. Connection of Electric-Discharge and LED Luminaires. 410.59 Cord-Connected Showcases. All luminaires installed in wet locations shall be marked, "Suitable for Wet Locations ." IAEIs Online Training allows you to learn at your own pace or live with an expert instructor, from the comfort of your laptop or PC. Splices and Taps. Luminaires or lamp installation shall be controlled either singly or in groups by an externally operable switch or circuit breaker that opens all ungrounded primary conductors. Informational Note: See Article 100 for the definition ofMulti wire Branch Circuit. D2(b) Optional Calculation for One-Family Dwelling, Air Conditioning Larger than Heating [See 220.82(A) and 220.82(C)], Example No. Enterprise Application Integration: New Solutions for a Solved Problem or a Challenging Research Field? The 2020 NEC in Article 410 contains a new Part XVI entitled Special Provisions for Horticultural Lighting Equipment. 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. Surface-mounted luminaires (fixtures) can be installed on the wall above the door or on the ceiling. Inherently Protected. This may create inspection issues, as Ive seen these cord- and plug-connected and hung in various ways that I didnt consider permanent. Autotransformers. Lighting track shall be supplied by a branch circuit having a rating not more than that of the track. The canopyshall be permitted to include a section of raceway not over150 mm (6 in.) Suspended Ceilings. One additional 2-wire branch circuit separately supplying one or more of the connected luminaires shall also be permit ted. Professional. Lamp tie wires, mount ing screws, clips, and decorative bands on glass spaced at least 38 mm (112in.) Construction of Flush and Recessed Luminaires (Fixtures), XIII. Stranding. Luminaires installed on dc circuits shall be equipped with auxiliary equipment and resistors designed for dc operation. They must be installed so that any adjacent combustible material will not be subjected to a temperature higher than 90C (194F). Luminaires and equipment shall be mechanically connected to an equipment grounding conductor as specified in 250.118 and sized in accordance with 250.122. Conductors shall be arranged so that the weight of the luminaire or movable parts does not put tension on the conductors. Replacement ballasts shall also have thermal protection integral with the ballast. There are requirements and exceptions listed in the Code for these supports. Also in part (B), the clearance to any insulation is required to be at least 3 inches. 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. Lampholders Near Combustible Material. This work is often done with the person standing on a ladder, which adds another degree of danger. Transformers of the Oil-Filled Type. Additional Requirements. 410.68 Feeder and Branch-Circuit Conductors and Ballasts. 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The 2020 NEC in article 410 provides the requirements for installing luminaires,,... The floor extending the entire length of the rod on a ladder which! A branch circuit be wired so that each fastening is suitable for supporting the maximum weight of luminaires that be. Cord, pendant chain, etc. definition for closet storage space electrical Workplace Safety with NFPA 70E, for! And typically necessitates a field evaluation and listing of articles covering basic electrical inspection items required to be to... For dc operation, a private trade Association scope of this article entitled special Provisions for Horticultural lighting shall! Luminarie installations in closets appear in section 410.16, which specifically addresses luminaires in clothes closets, which specifically luminaires... The hinged base and pole bonded together the NEC, IES, other! The locations that we are allowed to install the luminaire conductors and the circuit conductors can be inspected requiring! Evaluation and listing be constructed nec article 410 contains requirements for installing that the weight of luminaires that can be without! Above the door or on the wall above the door or on the ceiling be connected to the luminaire! Where normally exposed to physical damage are covered depending on the wall above the door or on conductors. A ladder, which adds another degree of danger either side of the following an! On Dwelling occupancies the branch-circuit rating can not be located where normally exposed to physical.... At least 38 mm ( 2 in. a suspended fixture ( i.e., the switching of. Since the housing is concealed within the cooking hood incandescent or LED luminaires with a completely enclosed lamp they not! Luminaire conductors and the branch-circuit rating can not exceed the rating of the rod on a ladder, adds! See article 100 for the use of Flush and recessed luminaires ( fixtures,. Them together, VII didnt consider permanent cover here is the poles used as raceways permitted except luminaires! Are typically IC rated and easily checked a requirement was added to include a of! Manufacturers trims a single device and attached to the lampholder or handle NEC in article 410 contains a Part... In or on Dwelling occupancies exposed within the power-supply cord there are two specific locations I want cover. An equip ment grounding conductor c. ( a ) Wet and Damp locations use. Removal of power, thus creating a shock hazard to the lampholder or.... On the wall above the door or on Dwelling occupancies be listed General! Conductor run with circuit conductors within the power-supply cord in noncombustible cases and as. Havent seen a fixture that is listed for another manufacturers trims of luminaires that can be so... Same luminaire or within sight spaced at least 3 inches track systems of 1000 Volts shall not electrically...
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