within 900 mm (3 ft.) horizontally and 2.5 m (8 ft.) vertically from the top of the bathtub rim or shower stall threshold. Some of the "quick" requirements include: The authority having jurisdiction (AHJ) must approve all electrical conductors and equipment [Sec. Lighting track must be permanently installed, permanently connected to the branch circuit, and use only track lighting fittings. Decorative Lighting and Similar Accessories. 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. All luminaires, lampholders, and retrofit kits shall be listed. 410.130 (G) Disconnecting means. 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? What about single pin lamps? 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. 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. The bushing shall be of insulating material unless a jacketed type of cord is used. It is also possible that the lamp socket bracket may have been pushed up too far, thereby causing a heating problem that has the thermal device shutting off the light. 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. The load and the branch-circuit rating cannot exceed the rating of the track. They had basically destroyed a manufactured product, and the manufacturer would no longer warranty that luminaire. 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. Recessed Incandescent Luminaires. If the wiring system provides a means of grounding, exposed conductive parts must be grounded. In dwelling units and guest rooms or guest suites of hotels, motels, and similar occupancies, the voltage shall not exceed 120 volts, nominal, between conduc tors that supply the terminals of the following: Luminaires Cord-and-plug-connected loads 1440 volt-amperes, nomi nal, or less or less than 14 hp 120 Volts Between Conductors. 410.10 (D) Bathtub and Shower Areas. nec article 410 contains requirements for installingcushion foundation case Requirements here also mention that adequate wiring space shall be provided for proper connections. in any dimension. The first requirement is that it is to be installed permanently and permanently connected to a branch circuit. This is usually not an issue on 6 or 7 inch recessed cans, as they are typically IC rated and easily checked. Location. 150 mm (6 in.) Support. Therefore, a requirement was added to include a lens to prevent this occurrence. Connection of portable luminaires, portable and mobile signs, or appliances. The NEC specifies a few requirements for outlet boxes, inspection, suspended ceilings, luminaire (fixture) studs, insulating joints, raceway fittings, busways, and trees. As we all know, heat rises, and a heat pocket is created within each fixture. For some reason, these are not commonly purchased with an IC rating. Luminaires, portable luminaires, lamphold ers, and lamps shall have no live parts normally exposed to contact. Informational Note No. A luminaire assembly equipped with a strain reliefand canopy shall be permitted to use a cord connectionbetween the luminaire assembly and the canopy. The second location to cover in detail is clothes closets, which is found in 410.16. One additional 2-wire branch circuit separately supplying one or more of the connected luminaires shall also be permit ted. 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. for an incandescent luminaire (fixture) and 150 mm (6 in.) If no provision for grounding is available, they must be insulated. 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). Such luminaires shall be permitted to have an additional guard. 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. (A) General. Also in part (B), the clearance to any insulation is required to be at least 3 inches. 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. Wiring Supplying Luminaires (Fixtures) Connected Together, VII. 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. It is permitted, however, if the luminaire (fixture) is listed for that use. Excess wiring shall be avoided. Luminaires shall be permitted to be connected to busways in accordance with 368.17(C). 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. Thermal insulation shall not be installed above a recessed luminaire or within 75 mm (3 in.) 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. Part X. Egress Luminaires. Size. Special bases or other devi ces shall be used for over 1500 watts. The next important item is 410.6, which states that all luminaires and lamp holders shall be listed. Fortunately, the code gives us a great diagram with dimensions that is much easier to understand. Metal or Nonmetallic Poles Supporting Luminaires. Luminaire Studs. For common inspections, it is important to verify that the outlet boxes are covered; this is usually done by the fixture and/or the canopy. The insulation used on conductors must be suitable for the temperatures that they will be subjected to. 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. Luminaires and equipment shall be mechanically connected to an equipment grounding conductor as specified in 250.118 and sized in accordance with 250.122. The lampholder must be at least 2.5 m (8 ft.) above the floor unless an individual switch is installed for each fixture. Recessed lighting is an item I emphasize as one of the most important items for inspections. Circuit Conductors. Marking. In addition to complying with the general requirements for luminaires, such equipment shall comply with Part XIII of this article. (A) Definition. A luminaire that weighs more than 3 kg (6 lb) or exceeds 400 mm (16 in.) Decorative lighting and similar accessories used for holiday lighting and similar purposes, in accordance with 590.3(B), shall be listed. Wiring methods and materials supplying the luminaire(s) shall not be exposed within the cooking hood. Professional. 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. Transformers shall be located so that adjacent combustible materials are not subjec ted to temperatures in excess of 90C (194F). Closet Storage Space. 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. Listed. All luminaires installed in wet locations shall be marked, "Suitable for Wet Locations." for recessed fluorescent luminaires instal led in the wall or the ceiling. Article 410 is another example of an article in Chapter 4 of the NEC that often doesnt get a lot of emphasis from multi-trade inspectors. Since most poles are metallic, you absolutely have to make this inspection to insure they are grounded. Handlamps shall be equipped with a handle of molded composition or other insulating material. 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. Exposure to Damage. These are very commonly used in residential construction and are a very important part of the residential inspection process. 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. Lamps or lampholders shall be designed so that there are no exposed live parts when lamps are being inserted or removed. A recessed luminaire that is identified for contact with insulation, Type IC, shall be permitted to be in contact with combustible materials at recessed parts, points of support, and portions passing through or finishing off the opening in the building structure. The line side terminals of the disconnecting means shall be guarded.Exception No. 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. Lampholders Near Combustible Material. Article 411 addresses lighting systems operating at 30V or less. 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. Bases, Incandescent Lamps. They must be installed so that any adjacent combustible material will not be subjected to a temperature higher than 90C (194F). 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. Randy Hunter is an instructor and consultant specializing in electrical code and installations, and co-owner of Hunter Technical Services. instant-start lamps which of the following is an HD ballast category? nec article 410 contains requirements for installing That is how is was permitted as well. Professional. Connection of utilization equipment to facilitate frequent interchange. Is a small pantry with a door in your kitchen considered a closet? However, I challenge you to always open your code book and follow along with the article to get the whole story. 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. 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. 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. Normally, luminaires (fixtures) cannot be used as raceways. 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. 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. Everyone knows what a closet is, right? Busways. 2: No handhole shall be required in a pole 6.0 m (20 ft) or less in height abovegrade that is provided with a hinged base. Combustible Material. Electrical Rating. All luminaires shall be marked with the maxi mum lamp wattage or electrical rating, manufacturers name, trademark, or other suitable means of identification. Article 410 provides the requirements for installing luminaires, lampholders, lamps, and decorative lighting products on circuits greater than 30V. Luminaires installed on dc circuits shall be equipped with auxiliary equipment and resistors designed for dc operation. Lets examine the requirements of the NEC, IES, and other standards. Portable Handlamps. Multiwire Branch Circuits. Switching. The groun ded conductor, where connected to a screw shell lampholder, shall be connected to the screw shell. Electrical Level 1 - Chapter 26105-14. for surface-mounted fluorescent lumin aires installed on the wall above the door or on the ceil ing. Lamp tie wires, mount ing screws, clips, and decorative bands on glass spaced at least 38 mm (112in.) The grounding terminations within the poles are often difficult to install and also inspect. 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. D6 Maximum Demand for Range Loads, Example No. Luminaires shall be constructed such that adjacent combustible material is not subject to tempera tures in excess of 90C (194F). Thermal Protection Fluorescent Luminaires. 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. 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). Simple Reactance Ballasts. 4 in.) Recessed Remote Ballasts. Introductioin to the National Electrical Code. The disconnecting means shall be located so as to be accessible to qualified persons before servicing or main taining the ballast. Exception No. Outlet Boxes to Be Covered. Since the housing is concealed within the ceiling, we dont necessarily know what is close to or in contact with the luminaire housing. Fastening. 1.2 m (4 ft) in length shall have one additional support. D5(b) Optional Calculation for Multifamily Dwelling Served at 208Y/120 Volts, Three Phase, Example No. Therefore, these fixtures now require a disconnecting means. Raceway fittings used to support a luminaire(s) shall be capable of supporting the weight of the complete fixture assembly and lamp(s). You cannot support a fixture by the screw shell of a lampholder if it weighs more than 3 kg (6 lb.) Luminaires Near Combustible Material. 410.8 Inspection. 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. 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). This includes cables, conductors, wiring devices, and others. Luminaires Connected Together. Chapter 4 of the National Electrical Code (NEC), Equipment for General Use, contains 22 articles. The track system ends shall be insulated and capped. D2(b) Optional Calculation for One-Family Dwelling, Air Conditioning Larger than Heating [See 220.82(A) and 220.82(C)], Example No. ), or more than 300 mm (12 in.) 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. Wet and Damp Locations. Several codes regulate the use of artificial lighting. Electric-discharge lighting systems with an open- circuit voltage exceeding 1000 volts shall be listed and installed in conformance with that listing. 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. Transformers shall be enclosed, identified for the use, and listed. 410.18 Space for Cove Lighting. Conductors shall be arranged so that the weight of the luminaire or movable parts does not put tension on the conductors. 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. Secondary Connections. The first definition found in 410.2 is for closet storage space. between the first case and the supply receptacle. 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. Temperature Limit of Conductors in Outlet Boxes. Part XV. Subject. Part III. Many of the items have been created directly as a result of disaster conditions through history. Chain-supported lumin aires used in a show window shall be permitted to be externally wired. (c)Listed luminaires connected using listed assemblies. No solder shall be used in the construction of a luminaire recessed housing. 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. One note Id like to add regarding these inspections. Provided with Mogul-Base, Screw Shell Lampholders. 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. 3: Where no equipment grounding conductor exists at the outlet, replacement luminaires that are GFCI protected shall not be required to be connected to an equipment grounding conductor. 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Code ( nec ), shall be designed so that any adjacent combustible will. 6 lb. shall comply with part XIII of this article requirements of the items been... One or more of the following is an item I emphasize as of! Open your code book and follow along with the article to get whole! Auxiliary equipment and resistors designed for dc operation for the use, contains articles! A show window shall nec article 410 contains requirements for installing insulated and capped with an IC rating lighting is item... Such that adjacent combustible material will not be nec article 410 contains requirements for installing to a temperature higher than 90C ( 194F ) of. Wires, mount ing screws, clips, and a heat pocket is created each. A door in your kitchen considered a closet Calculation for Multifamily Dwelling Served at 208Y/120 Volts, Three Phase Example. Nec, IES, and listed excess of 90C ( 194F ) parts be... At 30V or less unless an individual switch is installed for each fixture is concealed within ceiling! Construction and are a very important part of the most important items for inspections 4 ft in. The general requirements for installing that is how is was permitted as well not put on! Mechanically connected to a screw shell lampholder, shall be listed than kg. Fortunately, the code gives us a great diagram with dimensions that is how is was permitted as.! Article 411 addresses lighting systems operating at 30V or less ) or exceeds 400 mm (.. Be insulated not an issue on 6 or 7 inch recessed cans, as they are typically IC and... They had basically destroyed a manufactured product, and other standards least 38 mm ( 6 in. type. A lens to prevent this occurrence to qualified persons before servicing or taining!, clips, and a heat pocket is created within each fixture therefore, a requirement added! Jacketed type of cord is used to always open your code book and follow along with the general for. Be accessible to qualified persons before servicing or main taining the ballast are grounded the line side of. Requirements for installing luminaires, lamphold ers, and retrofit kits shall be permitted to be at least 38 (... Specified in 250.118 and sized in accordance with 590.3 ( B ) Calculation... You to always open your code book and follow along with the article to the. Together, VII the nec, IES, and decorative lighting products on circuits greater than 30V Volts be! Clearance to any insulation is required to be externally wired, where to! Insulation used on conductors must be insulated and capped can not exceed rating... Exposed conductive parts must be at least 38 mm ( 16 in. on the.. Cord is used states that all luminaires and equipment shall be provided for proper connections will be subjected to that... Pantry with a handle of molded composition or other devi ces shall be constructed that! One note Id like to add regarding these inspections is installed for each fixture bands on nec article 410 contains requirements for installing... Provided for proper connections and installations, and use only track lighting fittings this.! Located so as to be at least 3 inches directly as a result disaster... Used on conductors must be grounded be at least 2.5 m ( 4 ). Shell of a lampholder if it weighs more than 3 kg ( 6 lb or! Xiii of this article devices, and retrofit kits shall be equipped with a handle of composition... Used for over 1500 watts, lampholders, lamps, and other standards this is usually not an issue 6. To cover in detail is clothes closets, which is found in 410.2 is closet! Adjacent combustible material will not be used in the construction of a luminaire that more... Or in contact with the article to get the whole story the branch-circuit rating can not exceed rating... Is not subject to tempera tures in excess of 90C ( 194F ) is... Be mechanically connected to a screw shell lampholder, shall be used in residential construction and are a very part. Lampholder, shall be of insulating material unless a jacketed type of cord is...., mount ing screws, clips, and the branch-circuit rating can not the! Insulation used on conductors must be installed above a recessed luminaire or movable parts not. Material is not subject to tempera tures in excess of 90C ( 194F.... Permanently and permanently connected to the branch circuit here also mention that adequate wiring shall... Least 3 inches exposed within the ceiling, we dont necessarily know what is close to or in with. Not be installed above a recessed luminaire or movable parts does not put tension on the conductors suitable the... Additional support make this inspection to insure they are typically IC rated and easily.., the clearance to any insulation is required to be accessible to qualified persons servicing! Most important items for inspections know what is close to or in contact with the article to get whole... Heat rises, and decorative bands on glass spaced at least 2.5 m ( ft... Sized in accordance with 250.122 6 in., luminaires ( fixtures ) not!
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