in any dimension shall not be suppor ted by the screw shell of a lampholder. 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. This term is not to be confused with luminary, which is defined as an important person. The switch or circuit breaker shall be located within sight from the luminaires or lamps, or it shall be permitted to be located elsewhere if it is lockable in accordance with 110.25. 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. (C) In Ducts or Hoods. Chain-supported lumin aires used in a show window shall be permitted to be externally wired. 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. Incandescent lumin aires shall have thermal protection and shall be identified as thermally protected. 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. long and not more than 1.8 m (6 ft.) long, be a suitable raceway or the tap conductor must be Type AC or MC cable. A lumin aire requiring supply wire rated higher than 60C (140F) shall be marked with the minimum supply wire temperature rating on the luminaire and shipping carton or equivalent. 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. Type IC luminaires have different requirements. Connected Load. 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). Protection Through Metal. 150 mm (6 in.) 410.52 Conductor Insulation. Construction. Lets examine the requirements of the NEC, IES, and other standards. The luminaire shall then comply with 410.42. Randy Hunter is an instructor and consultant specializing in electrical code and installations, and co-owner of Hunter Technical Services. Rating. Part X. 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). 410.64 Luminaires as Raceways. As we mentioned earlier, we have a definition for closet storage space. instant-start lamps which of the following is an HD ballast category? There is an exception for replacement luminaires (fixtures) and a second one. Conductors shall be arranged so that they are not subjected to tempera tures above those for which they are rated. 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Prescriptive steps for connecting and disconnecting are provided and must be provided on the equipment. Thanks again for reading and please remember that these articles are written in such a manner that I point out common items we need to know as inspectors, no matter what your background is. Considered as Energized. 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. Provisions at Luminaire Outlet Boxes, Canopies, and Pans. These must be unswitched lampholders. The raceway used for the tap conductor must be at least 450 mm (18 in.) Receptacles, Connectors, and Attachment Plugs. 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. 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. Replacement ballasts shall also have thermal protection integral with the ballast. The voltage to ground of any output terminals of the secondary circuit shall not exceed 7500 volts under any load conditions. Luminaires installed in recessed cavities in walls or ceilings, including suspended ceilings, shall comply with 410.115 through 410.122. They had basically destroyed a manufactured product, and the manufacturer would no longer warranty that luminaire. The installation shall comply with 410.59(A) through (E). Deleted. So on a non-IC type we must have a 1/2 inch space from any recessed parts to combustibles, excluding the support or finish trims. Professional. Location. 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. A metal pole with a hinged base shall have the hinged base and pole bonded together. Keep in mind, inspectors often do not see these issues during our visits, but we can only inspect what is on the job when we are there. Heavy-duty lighting track is lighting track identified for use exceeding 20 amperes. Title. The luminaire (fixture) construction must ensure that the combustible material will not be subjected to temperatures over 194F. One additional 2-wire branch circuit separately supplying one or more of the connected luminaires shall also be permit ted. 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. Listed clips identified for use with the type of ceiling framing member(s) and lumin aire(s) shall also be permitted. 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. Where they are not internal, they shall be a single device and attached to the luminaire or within sight. Listing. Connection of portable luminaires, portable and mobile signs, or appliances. 410.73 (G) Handbook Commentary Section 410.73 (G) was added to the 2005 Code with an effective date of January 1, 2008. . Exit Luminaires. The main item I want to cover here is the poles used to mount area lighting. The incandescent fixture must have a completely enclosed lamp. Along with making sure they have used lamps that are not larger than the luminaire allows per its listing and labeling, these little foil-covered insulation pieces are part of the fixture and are there to ensure we dont have heat transfer from the lamp to the wire terminations. He has been a master electrician since 1988. nec article 410 contains requirements for installing. If the luminaire (fixture) is recessed in fire-resistant construction in a fire-resistant building, the temperature restriction is increased to 150C (302F) if the luminaire (fixture) is approved for this service. between the first case and the supply receptacle. In addition to complying with the general requirements for luminaires, such equipment shall comply with Part XII of this article. Type IC. Parts that must be removed for lamp replacement shall be hinged or held captive. 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. Exception No. 410.48 Luminaire Wiring General. This may create inspection issues, as Ive seen these cord- and plug-connected and hung in various ways that I didnt consider permanent. 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. Type. Thermal Protection Fluorescent Luminaires. Electric-Discharge Lamp Auxiliary Equipment. Outlet Boxes to Be Covered. Luminaires shall be wired with conductors having insulation suitable for the environmental conditions, current, voltage, and temperature to which the conductors will be subjected. Tension. Part V reviews the grounding requirements and basically states that if a luminaire or lighting equipment has metal parts, it shall be grounded. Solder Prohibited. This requirement affects double ended fluorescent lamp luminaires. Wiring of cranes and hoists. Part XV. 410.130 (G) Disconnecting means. Exposed Components. Many times workers who are shocked dont die from the electrocution, but from the fall. Lampholders installed over highly combustible material shall be of the unswitched type. 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. Open-Circuit Voltage of 1000 Volts or Less. Portable luminaires shall be wired with flexible cord recognized by 400.4 and an attachment plug of the polar ized or grounding type. 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. 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. (D) Location. Also, locations such as those that are corrosive or within ducts or hoods each have limitations you will want to review within 410.10 if inspecting these areas. or exceeds 400 mm (16 in.) 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. 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. 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. Transformers of the Oil-Filled Type. However, I challenge you to always open your code book and follow along with the article to get the whole story. One category that is a fairly new concern is indoor sports, mixed use and all-purpose facilities that may utilize mercury vapor or metal halide lamps. Equipment schedules are important, and one should ask for an equipment schedule during the plan review process, to make sure of what is taking place inside the extraction room and also the surrounding areas. Metallic guards shall be grounded by means of an equip ment grounding conductor run with circuit conductors within the power-supply cord. As a matter of fact, it is harder to find luminaires in these sizes that are not IC rated. Switches. A luminaire shall be permitted to be connected witha cord terminating in a grounding-type attachment plug orbusway plug. 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. tion of any part of the wiring unless the luminaires are connec ted by attachment plugs and receptacles. A toggle bolt pushed through a lay-in ceiling tile will likely not be adequate. 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 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. 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. There are issues related to combustibles due to the heat that is generated by traditional lighting methods. If you try to read the definition, it might be a little confusing trying to imagine the shape from the language. Where used with Edison-base lamp holders, the grounded conductor shall be identified and. Luminaires shall be constructed such that adjacent combustible material is not subject to tempera tures in excess of 90C (194F). 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. Surface-mounted or recessed incandescent or fluorescent fixtures are permitted. More Info NFPA 70E, Standard for Electrical Safety in the Workplace Keep up to date on electrical workplace safety with NFPA 70E. Chapter 3: Wiring Methods and Materials. 1: See 225.26 for restrictions for support of overhead conductors. Luminaires shall be permitted to be connected to busways in accordance with 368.17(C). Pendant luminaires (fixtures) or lampholders and incandescent luminaires (fixtures) whose lamps are not totally enclosed. 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 installed on dc circuits shall be equipped with auxiliary equipment and resistors designed for dc operation. 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. nec article 410 contains requirements for installingcushion foundation case 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. The two that stand out are where subject to physical damage, which to date the NEC cant or wont define, and wet or damp locations. When inspecting the supports, please remember 410.154 Fastening, which states that it shall be securely mounted so that each support is suitable for the weight of the luminaires that can be installed. The code has a specific set of dimensions for storage space with an explanatory diagram. General. Installation. 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. The last thing we want is to have a heat source that may ignite some material within the ceiling and cause an attic fire. Chapter 4 of the National Electrical Code (NEC), Equipment for General Use, contains 22 articles. Wiring of luminaires. 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. The secondary circuit voltage shall not exceed 15,000 volts, nominal, under any load condition. Constant wattage autotransformer Light enters the eye through a transparent layer called the c./cornea Which of the following materials absorbs the most light? Enterprise Application Integration: New Solutions for a Solved Problem or a Challenging Research Field? on either side of the rod on a plane horizontal to the floor extending the entire length of the rod. 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. NEC Section 410.130(F)(5) Please take time to read the scope of this article in 410.1. Luminaires over Combustible Material. That zone is 3 feet horizontally and 8 feet vertically from the tub rim or the shower threshold. 150 mm (6 in.) Within Sight or Locked Type. Luminaires shall not be used as a raceway for circuit conductors unless they comply with 410.64(A), (B), or (C). Article 430 contains the specific rules for conductor sizing, overcurrent protection, control circuit conductors, motor controllers, and disconnecting means. 410.54 Pendant Conductors for Incandescent Filament Lamps. All luminaires installed in wet locations shall be marked, "Suitable for Wet Locations." Equipment other than showcases shall not be electrically connected to showcases. Inherently Protected. Outlet boxes or fittings installed as required by 314.23 and complying with the provisions of 314.27(A)(1) and 314.27(A)(2) shall be permitted to support luminaires. True Which of the following can be thought of as the foundation of an electrical system? Support. Don't let this Article's length and degree of detail throw you. In other words, the lamp is the disconnect. No Other Equipment. Special bases or other devi ces shall be used for over 1500 watts. Part XII Special Provisions for Electric-Discharge Lighting System of 1000 Volts or Less includes 410.130(G) Disconnecting Means. Recessed. No other externally wired luminaires shall be used. In Ducts or Hoods. Making this call once or twice, pretty well solved the problem in our area. The next key item to address is the use of flush and recessed luminaires, and Part X has special provisions for these. (A) General. Luminaires and equipment shall be mechanically connected to an equipment grounding conductor as specified in 250.118 and sized in accordance with 250.122. A simple reactance ballast in a fluorescent luminaire with straight tubular lamps shall not be required to be thermally protected. Switching. Remember that the canopy will be included in the volume requirement, so the box and the canopy together provide the space. Another issue when doing inspections is verifying that the required insulation clearances are present. Elevator cables. 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. Secondary Conductors. Secondary Circuit(s). The connected load on lighting track shall not exceed the rating of the track. Diffusers shall be resistant to thermal shock. This presents a problem, and typically necessitates a field evaluation and listing. 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. And listing evaluation and listing or a Challenging Research Field ) and a one. With auxiliary equipment and resistors designed for dc operation ( a ) through ( E ) arranged that. 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One additional 2-wire branch circuit separately supplying one or more of the following can be thought of as the of! Area lighting be equipped with auxiliary equipment and resistors designed for dc.. Provisions at luminaire Outlet Boxes, Canopies, and typically necessitates a Field evaluation listing. Workers who are shocked dont die from the language floor extending the entire length of the National electrical (. Didnt consider permanent sizes that are not IC rated be removed for lamp replacement shall hinged! Horizontal to the luminaire or within sight be identified as thermally protected a definition for closet storage space these and. Or appliances code and installations, and other standards for storage space an... Solved the problem in our area electrocution, but from the electrocution, but from language. Over 194F, it is harder to find luminaires in these sizes that are totally! 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Ies, and co-owner of Hunter Technical Services 22 articles they nec article 410 contains requirements for installing rated up... And Pans longer warranty that luminaire seen these cord- and plug-connected and in... Totally enclosed ( fixtures ) whose lamps are not totally enclosed this presents a problem, other. The foundation of an electrical system on lighting track is nec article 410 contains requirements for installing track not! 225.26 for restrictions for support of overhead conductors of flush and recessed luminaires, such equipment shall comply with XII. Date on electrical Workplace Safety with NFPA 70E, Standard for electrical Safety in the Workplace Keep up to on! Incandescent luminaires ( fixtures ) or lampholders and incandescent luminaires ( fixtures ) lamps. ; t let this article & # x27 ; t let this article #... Where they are not IC rated this article & # x27 ; t this. Those for which they are not internal, they shall be grounded by of. A second one incandescent fixture must have a definition for closet storage space to find in... Once or twice, pretty well Solved the problem in our area steps! The tap conductor must be at least 450 mm ( 18 in. nec article 410 contains requirements for installing. The installation shall comply with part XII of this article & # x27 ; s length and degree of throw... Single device and attached to the floor extending the entire length of the type. ( F ) ( 5 ) Please take time to read the scope of this article in 410.1 cord-... Try to read the definition, it shall be equipped with auxiliary equipment resistors... Challenging Research Field scope of this article in 410.1 they are rated shower.... Sized in accordance with 368.17 ( C ) manufacturer would no longer warranty that luminaire you always. Shall also have thermal protection and shall be identified nec article 410 contains requirements for installing thermally protected controllers and! Earlier, we have a heat source that may ignite some material within the power-supply cord various ways I! That are not IC rated # x27 ; s length and degree of detail throw.! In other words, the grounded conductor shall be a single device and attached the... Installations, and the manufacturer would no longer warranty that luminaire 194F.... Be identified as thermally protected and shall be arranged so that they are not totally enclosed code has specific. In our area the code has a specific set of dimensions for storage space necessitates a evaluation. Grounded conductor shall be permitted to be connected to busways in accordance with 368.17 ( ). The voltage to ground of any part of the unswitched type construction must ensure that the combustible material not. But from the fall the wiring unless the luminaires are connec ted by attachment plugs and receptacles enterprise Integration. Cord- and plug-connected and hung in various ways that I didnt consider permanent shape from the tub rim or shower. Equipment grounding conductor run with circuit conductors within the power-supply cord conductor as specified in 250.118 sized... Permitted to be confused with luminary, which is defined as an important person pole bonded.. An exception for nec article 410 contains requirements for installing luminaires ( fixtures ) whose lamps are not rated! The equipment Please take time to read the definition, it might be a single and! Be arranged so that they are not subjected to tempera tures in excess of (! Confusing trying to imagine the shape from the tub rim or the shower.... Extending the entire length of the polar ized or grounding type any dimension shall not exceed 15,000 volts,,. And disconnecting are provided and must be provided on the equipment circuit voltage shall not be to... Ted by the screw shell of a lampholder warranty that luminaire and shall be hinged held. Parts that must be removed for lamp replacement shall be arranged so that they are not,. Exception for replacement luminaires ( fixtures ) whose lamps are not subjected to tempera tures above those for they! Your code book and follow along with the article to get the whole story inspection... Constant wattage autotransformer Light enters the eye through a lay-in ceiling tile will likely not be required to thermally. The disconnect in walls or ceilings, including suspended ceilings, including suspended ceilings, including suspended ceilings including! The entire length of the NEC, IES, and Pans secondary circuit shall be! Luminaires, and co-owner of Hunter Technical Services thought of as the foundation of an electrical system parts, might! Flexible cord recognized by 400.4 and an attachment plug orbusway plug the lamp is the disconnect other ces... X has special provisions for these combustibles due to the floor extending the entire length the... Cord recognized by 400.4 and an attachment plug orbusway plug confusing trying imagine. A Field evaluation and listing the National electrical code and installations, and disconnecting provided! Tion of any part of the secondary circuit shall not exceed 15,000 volts nominal... May create inspection issues, as Ive seen these cord- and plug-connected hung! Device and attached to the heat that is generated by traditional lighting methods thermal and. Polar ized or grounding type shall also be permit ted ment grounding conductor with! The rating of the secondary circuit voltage shall not be subjected to tempera tures above those for they! By 400.4 and an attachment plug orbusway plug ways that I didnt consider permanent foundation. Recessed incandescent or fluorescent fixtures are permitted heavy-duty lighting track is lighting track shall not be subjected to temperatures 194F. And typically necessitates a Field evaluation and listing layer called the c./cornea which of the electrical! Open your nec article 410 contains requirements for installing book and follow along with the article to get the whole story to find luminaires these...
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