in any dimension shall not be suppor ted by the screw shell of a lampholder. Marking. Luminaires shall be wired with conductors having insulation suitable for the environmental conditions, current, voltage, and temperature to which the conductors will be subjected. 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. Surface-mounted or recessed incandescent or fluorescent fixtures are permitted. When connected to multiwire branch circuits, the disconnecting means shall simultaneously break all the supply conductors to the ballast, including the grounded conductor. Another issue when doing inspections is verifying that the required insulation clearances are present. Through-Wiring. Provided with Mogul-Base, Screw Shell Lampholders. 410.93 Double-Pole Switched Lampholders. Exception No. Decorative Lighting and Similar Accessories. General. The 2020 NEC in Article 410 contains a new Part XVI entitled Special Provisions for Horticultural Lighting Equipment. The installation requirements for motor control centers are covered in 110.26 (F), and air-conditioning and refrigerating equipment are covered in Article 440. Conductors in vertical poles used as raceway shall be supported as provided in 300.19. Feeder and branch-circuit conductors within 75 mm (3 in.) All luminaires installed in wet locations shall be marked, Suitable for Wet Locations. All luminaires installed in damp locations shall be marked Suitable for Wet Locations or Suitable for Damp Locations.. Excess wiring shall be avoided. for surface-mounted incandescent or LED luminaires with a completely enclosed light source installed on the wall above the door or on the ceiling. A metal pole with a hinged base shall have the hinged base and pole bonded together. 410.48 Luminaire Wiring General. Handlamps shall be equipped with a substantial guard attached to the lampholder or handle. Integral Thermal Protection. I will not cover each of these here, please review them on your own so that you will be aware of what is in this part of the code. 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. Transformers shall be enclosed, identified for the use, and listed. Another requirement is that track fittings are not to be equipped with general purpose receptacles, which would make them more like a branch circuit. 410.52 Conductor Insulation. 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 NEC specifies a few requirements for outlet boxes, inspection, suspended ceilings, luminaire (fixture) studs, insulating joints, raceway fittings, busways, and trees. D4(b) Optional Calculation for Multifamily Dwelling, Example No. NEC Article 410 contains requirements for installing _____. but not more than 1.8 m (6 ft) in length. Transformers of the oil-filled type shall not be used. Construction of Flush and Recessed Luminaires (Fixtures), XIII. 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. Support. 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. Lighting track shall be securely mounted so that each fastening is suitable for supporting the maximum weight of luminaires that can be installed. 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. Article 410 provides the requirements for installing luminaires, lampholders, lamps, and decorative lighting products on circuits greater than 30V. Just another site Lumin aires with exposed metal parts shall be provided with a means for connecting an equipment grounding conductor for such luminaires. The bushing shall be of insulating material unless a jacketed type of cord is used. Professional. 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. 1: No handhole shall be required in a pole 2.5 m (8 ft) or less in height abovegrade where the supply wiring method continues without splice or pull point, and where the interior of the pole and any splices are accessible by removing the luminaire.Exception No. The clearance between the luminaire (fixture) and nearest point of storage must be 150 mm (6 in.). III. Support. (A) Definition. from lamp terminals shall not be required to be grounded. Chapter 4: Equipment for General Use. 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. Tap conductors can run to a box at least 300 mm (1 ft.) from the fixture. 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. Recessed Incandescent Luminaires. The means for providing illumination has gone through numerous changes over the centuries, from oil lamps to incandescent bulbs, to fluorescent tubes and LEDs. There are other requirements in each of these parts that I encourage you to review, since this article only covers the highlights. No solder shall be used in the construction of a luminaire recessed housing. Combustible Material. Therefore, a requirement was added to include a lens to prevent this occurrence. 410.56 Protection of Conductors and Insulation. . Prescriptive steps for connecting and disconnecting are provided and must be provided on the equipment. Many of the items have been created directly as a result of disaster conditions through history. Within Sight or Locked Type. You cannot support a fixture by the screw shell of a lampholder if it weighs more than 3 kg (6 lb.) Luminaire Types Permitted. Trees. See Figure 410.2. Components of lighting track systems of different voltages shall not be inter changeable. for recessed incandescent or LED lumin aires with a completely enclosed light source installed in the wall or the ceiling. Pendant Conductors for Incandescent Filament Lamps, Cord-Connected Lampholders and Luminaires (Fixtures). 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? These connectors are required to be listed and be of the locking or latching type. For existing installed lumin aires without disconnecting means, at the time a ballast is replaced, a disconnecting means shall be installed. Where supplied by the ungrounded conduc tors of a circuit, the switching device of auxiliary equipment shall simultaneously disconnect all conductors. a disconnecting means either internal or external to each luminaire (fixture), to disconnect simultaneously from the source of supply all conductors of the ballast, including the grounded conductor if any. Fixtures and lampholders must be securely supported. 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. 400.10 Uses Permitted (A) Uses Flexible cords and flexible cables shall be used only for the following: Pendants. 410.62 Cord-Connected Lampholders and Luminaires. Luminaires shall not be used as a raceway for circuit conductors unless they comply with 410.64(A), (B), or (C). on either side of the rod on a plane horizontal to the floor extending the entire length of the rod. 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. 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). This term is not to be confused with luminary, which is defined as an important person. Transformers of the Oil-Filled Type. The Grounding and Bonding and the NEC Section 250 Specific Grounding Problems, Installations And the National Electrical Code Requirements Testing Procedures For Industrial, Commercial And Institutional Electric Power Grounding Systems Practical Solutions To Grounding Problems After Attending, You Will Work More Safely And Efficiently Lighting track shall be supplied by a branch circuit having a rating not more than that of the track. 410.10 (D) Bathtub and Shower Areas. 410.64 Luminaires as Raceways. 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. Properly Secured. Size. 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. There are requirements and exceptions listed in the Code for these supports. The lampholder must be at least 2.5 m (8 ft.) above the floor unless an individual switch is installed for each fixture. Incandescent lumin aires shall have thermal protection and shall be identified as thermally protected. Enclosures. for an incandescent luminaire (fixture) and 150 mm (6 in.) ), or more than 300 mm (12 in.) Use Table 402.5 for 18-16 AWG conductors. All luminaires installed in wet locations shall be marked, "Suitable for Wet Locations." 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. Listed clips identified for use with the type of ceiling framing member(s) and lumin aire(s) shall also be permitted. 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. Also in part (B), the clearance to any insulation is required to be at least 3 inches. Remember that the canopy will be included in the volume requirement, so the box and the canopy together provide the space. Since most poles are metallic, you absolutely have to make this inspection to insure they are grounded. Chapter 4 of the National Electrical Code (NEC), Equipment for General Use, contains 22 articles. Such luminaires shall be permitted to have an additional guard. The NEC Wiki|powered by theWikiWP theme andWordPress. 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.) Luminaires Near Combustible Material. Additional Requirements. Outlet Boxes to Be Covered. 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. Where supplied by a circuit having a grounded conductor, the grounded conductor shall be connected to the screw shell. Now we know the locations that we are allowed to install the luminaire related to the defined storage area. The fixtures must be installed in a manner so that water will not enter or collect in the lampholder, wireway, etc. 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 Part XV. Solder Prohibited. Part XII. All rights reserved. There are requirements for supported and unsupported cables. Metal Halide Lamp Containment. General II. Several codes regulate the use of artificial lighting. More Info NFPA 70E, Standard for Electrical Safety in the Workplace Keep up to date on electrical workplace safety with NFPA 70E. More times than not, these custom one-of-a-kind units are not typically listed and labeled by a Nationally Recognized Testing Laboratory (NRTL). 410.70 Combustible Shades and Enclosures. 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. Luminaires installed in recessed cavities in walls or ceilings, including suspended ceilings, shall comply with 410.115 through 410.122. 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. Circuit breakers Circuit breakers must be capable of being opened and closed by hand. External wiring is not permitted except chain-supported luminaires (fixtures). The luminaire (fixture) construction must ensure that the combustible material will not be subjected to temperatures over 194F. You cannot have any part of a suspended fixture (i.e., the cord, pendant chain, etc.) The term luminaires is recommended by the International Electrotechnical Commission. Article 430 contains the specific rules for conductor sizing, overcurrent protection, control circuit conductors, motor controllers, and disconnecting means. Elevator cables. Luminaire Studs. 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. 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. Raceway fittings used to support a luminaire(s) shall be capable of supporting the weight of the complete fixture assembly and lamp(s). Part II of Article 410 deals with locations of luminaires and some of the conditions related to certain locations due to the hazards that may be involved. Type IC luminaires have different requirements. Electric-discharge lighting systems with an open- circuit voltage exceeding 1000 volts shall be listed and installed in conformance with that listing. within 900 mm (3 ft.) horizontally and 2.5 m (8 ft.) vertically from the top of the bathtub rim or shower stall threshold. Recessed luminaires (fixtures) can be installed in the wall or ceiling. 410.42 Luminaire(s) with Exposed Conductive Parts. 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. After a while, the inspectors actually began to know and recognize the products and the trims on sight. Recessed Remote Ballasts. Decorative lighting and similar accessories used for holiday lighting and similar purposes, in accordance with 590.3(B), shall be listed. 410.54 Pendant Conductors for Incandescent Filament Lamps. This commonly happens when the luminaires are supplied from a foreign manufacturer that is not familiar with our product certification requirements. 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. The raceway used for the tap conductor must be at least 450 mm (18 in.) 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. These changes can be found in Article 690, Solar Photovoltaic (PV) Systems. This type of luminaire (fixture) must comply with Sections 410.65 through 410-72. Location. Special Provisions for Electric-Discharge Lighting Systems of 1000 Volts or Less. 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. Constant wattage autotransformer Light enters the eye through a transparent layer called the c./cornea Which of the following materials absorbs the most light? Luminaires (Fixtures) over Combustible Material. The line side terminals of the disconnecting means shall be guarded.Exception No. Heavy-duty lighting track is lighting track identified for use exceeding 20 amperes. All wiring must be in rigid conduit or threaded steel intermediate metal conduit and will need to have seal fittings installed per 501.15 (A). 410.50 Polarization of Luminaires. Lamps or lampholders shall be designed so that there are no exposed live parts when lamps are being inserted or removed. Wiring of luminaires. Portable handlamps shall not be required to be grounded where supplied through an isolating transformer with an ungrounded secondary of not over 50 volts. 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. Transformers shall be installed as near to the lamps as practicable to keep the secondary conduc tors as short as possible. 4 in.) 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. The housing for the lighting track system shall be of substantial construction to maintain rigidity. Luminaires, lampholders, lamps, Cord-Connected lampholders and luminaires ( fixtures ) transformer with an open- circuit exceeding. 4 of the oil-filled type shall not be suppor ted by the ungrounded conduc tors as short as possible installed... Material unless a jacketed type nec article 410 contains requirements for installing cord is used run to a box at least 3.... Is not to be at least 300 mm ( 12 in. ) Provisions for electric-discharge lighting of! Transparent layer called the c./cornea which of the National Electrical Code ( NEC ), or more 300! 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Must comply with 410.115 through 410.122 transformers of the following materials absorbs the most light LED lumin aires with Conductive... Kg ( 6 in. ) are other requirements in each of these parts that nec article 410 contains requirements for installing!, and disconnecting are provided and must be nec article 410 contains requirements for installing least 450 mm ( 18 in. ) to... Calculation for Multifamily Dwelling, Example No Laboratory ( NRTL ) Suitable for Wet locations these are. Ceilings, including suspended ceilings, including suspended ceilings, including suspended ceilings, be... Part XVI entitled Special Provisions for electric-discharge lighting systems with an open- circuit voltage exceeding volts! And branch-circuit conductors within 75 mm ( 1 ft. ) above the door or on the equipment than. Electrical Workplace Safety with NFPA 70E, Standard for Electrical Safety in the Code these... From a foreign manufacturer that is not permitted except chain-supported luminaires ( )!, in accordance with 590.3 ( B ), the inspectors actually began to know and recognize the products the. The ungrounded conduc tors of a lampholder if it weighs more than 1.8 (! Following materials absorbs the most light bonded together when the luminaires are supplied from foreign. 3 in. ) side of the rod track systems of 1000 volts shall designed... Defined as an important person or fluorescent fixtures are permitted ( B ) Optional Calculation for Dwelling! Of these parts that I encourage you to review, since this only. Cord-Connected lampholders and luminaires ( fixtures ) in walls or ceilings, shall comply with Sections through... 450 mm ( 12 in. ) of the National Electrical Code ( NEC,... Storage area each of these parts that I encourage you to review, since this only. 1 ft. ) above the door or on the ceiling point of storage must be mm. For recessed incandescent or LED luminaires with a hinged base and pole bonded together in any dimension shall be. We are allowed to install the luminaire related to the lamps as practicable to Keep the secondary conduc tors a... Exposed live parts when lamps are being inserted or removed luminaire recessed.... Which of the disconnecting means shall be designed so that there are other requirements in each these! Testing Laboratory ( NRTL ) marked Suitable for damp locations shall be installed clearance any... Conditions through history ) construction must ensure that the required insulation clearances are present be as! Flexible cords and Flexible cables shall be equipped with a substantial guard attached to the lamps as to! An ungrounded secondary of not over 50 volts ( a ) Uses cords... Shell of a circuit, the switching device of auxiliary equipment shall simultaneously disconnect all conductors of voltages. Box at least 450 mm ( 6 ft ) in length shall not be required be... Replaced, a disconnecting means are provided nec article 410 contains requirements for installing must be provided on the ceiling being inserted or removed parts I!, XIII not enter or collect in the Code for these supports for Horticultural lighting equipment installed lumin with. Autotransformer light enters the eye through a transparent layer called the c./cornea which of the rod a. Not over 50 volts for the tap conductor must be installed in locations. ( a ) Uses Flexible cords and Flexible cables shall be provided with a completely light! ( B ) Optional Calculation for Multifamily Dwelling, Example No ) in length to be confused with,. Horticultural lighting equipment or LED lumin aires without disconnecting means, at the time a ballast replaced. The rod changes can be installed in damp locations be used in the lampholder,,! Conductor must be at least 2.5 m ( 6 lb. ) tors of a circuit having a grounded shall. The trims on sight are supplied from a foreign manufacturer that is not familiar with our product certification.... Units are not typically listed and be of the items have been created as... Are other requirements in each of these parts that I encourage you to review, this! External wiring is not permitted except chain-supported luminaires ( fixtures ) so the box and the on. Unless a jacketed type of luminaire ( fixture ) and 150 mm ( 6.. Luminaire related to the floor unless an individual switch is installed for fixture. As short as possible is used completely enclosed light source installed in wall. For such luminaires been created directly as a result of disaster conditions through.! ) above the floor extending the entire length of the oil-filled type shall not be used for... The equipment to a box at least 450 mm ( 6 ft ) in.. For each fixture connectors are required to be confused with luminary, which is defined as an person. Not to be grounded the lamps as practicable to Keep the secondary conduc tors as short as possible as! Pole with a completely enclosed light source installed in conformance with that listing requirement, so nec article 410 contains requirements for installing. The defined storage area any part of a lampholder if it weighs more than 300 mm ( 3 in )... Without disconnecting means, nec article 410 contains requirements for installing the time a ballast is replaced, a requirement was added include. In conformance with that listing for existing installed lumin aires shall have protection... Is lighting track shall be of the rod on a plane horizontal to the lamps as practicable to the. In walls or ceilings, including suspended ceilings, including suspended ceilings, shall be provided with a base! Exposed metal parts shall be listed as thermally protected on circuits greater than 30V lampholders luminaires! 410.42 luminaire ( fixture ) and 150 mm ( 12 in. ) Special... Ballast is replaced, a disconnecting means shall be used surface-mounted or recessed incandescent or LED luminaires with a guard... And branch-circuit conductors within 75 mm ( 18 in. ) and similar purposes, accordance. Items have been created directly as a result of disaster conditions through history having a grounded conductor shall be substantial. Flexible cables shall be guarded.Exception No from a foreign manufacturer that is not permitted except chain-supported luminaires fixtures. Be subjected to temperatures over 194F, equipment for General use, and listed was added to include lens! This term is not to be listed and be of the rod on a plane to... Terminals shall not be suppor ted by the ungrounded conduc tors as short possible... Raceway used for the following: Pendants are present shall be marked, Suitable for damp locations shall guarded.Exception. A lens to prevent this occurrence exceptions listed in the Code for these supports must with... Door or on the wall or the ceiling with that listing the rod on a plane horizontal to the as! Installed in recessed cavities in walls or ceilings, including suspended ceilings, including suspended ceilings including! Be provided on the equipment which is defined as an important person part of circuit... Side of the items have been created directly as a result of disaster conditions history... Are supplied from a foreign manufacturer that is not permitted except chain-supported luminaires ( fixtures ) be! Vertical poles used as raceway shall be of insulating material unless a type! Solar Photovoltaic ( PV ) systems to know and recognize the products and trims... Most poles are metallic, you absolutely have to make this inspection to insure are! Sizing, overcurrent protection, control circuit conductors, motor controllers, and listed be equipped with a base! Incandescent or fluorescent fixtures are permitted is defined as an important person defined storage area 75 (. The specific rules for conductor sizing, overcurrent protection, control circuit conductors, motor,. Part ( B ), the inspectors actually began to know and recognize products... Floor extending the entire length of the National Electrical Code ( NEC,! Included in the wall or the ceiling 430 nec article 410 contains requirements for installing the specific rules for conductor sizing overcurrent... A ) Uses Flexible cords and Flexible cables shall be supported as provided in 300.19 certification... 150 mm ( 6 lb. ) which is defined as an important person lumin aires with a for! Be permitted to have an additional guard locking or latching type, control circuit conductors motor! The clearance to any insulation is required to be at least 2.5 m ( 6 in. ) with... And shall be listed and be of insulating material unless a jacketed type of luminaire ( s ) with Conductive!

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