Secondary Conductors. Exposed Components. Luminaires and equipment shall be mechanically connected to an equipment grounding conductor as specified in 250.118 and sized in accordance with 250.122. (D) Location. 410.8 Inspection. 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. This month we will continue the series of articles covering basic electrical inspection items. One note Id like to add regarding these inspections. 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. Metal Cabinets. NEC Article 410 contains requirements for installing recessed lighting fixtures causing them to emit electrons? 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. 2: See 300.5(D) for protection of conductors. 1.2 m (4 ft) in length shall have one additional support. Additional Requirements. 2: Replacement luminaires shall be permitted to connect an equipment grounding conductor from the outlet in compliance with 250.130(C). Luminaires Near Combustible Material. 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. nec article 410 contains requirements for installing nec article 410 contains requirements for installing The lampholder must be at least 2.5 m (8 ft.) above the floor unless an individual switch is installed for each fixture. The NEC specifies a few requirements for outlet boxes, inspection, suspended ceilings, luminaire (fixture) studs, insulating joints, raceway fittings, busways, and trees. Electrical Rating. Informational Note No. Lighting track shall be securely mounted so that each fastening is suitable for supporting the maximum weight of luminaires that can be installed. The last thing we want is to have a heat source that may ignite some material within the ceiling and cause an attic fire. 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. After a while, the inspectors actually began to know and recognize the products and the trims on sight. 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. (C) In Ducts or Hoods. Only luminaires of the following types shall be permitted in a closet: Surface-mounted or recessed incandescent or LED luminaires with completely enclosed light sources, Surface-mounted or recessed fluorescent luminaires, Surface-mounted fluorescent or LED luminaires identi fied as suitable for installation within the closet storage space. The grounding terminations within the poles are often difficult to install and also inspect. The luminaire (fixture) construction must ensure that the combustible material will not be subjected to temperatures over 194F. 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. The terminal of an electric-discharge lamp shall be considered as a live part. Disconnection. 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. Tap conductors can run to a box at least 300 mm (1 ft.) from the fixture. 410.59 Cord-Connected Showcases. Luminaires shall be constructed such that adjacent combustible material is not subject to tempera tures in excess of 90C (194F). Listed clips identified for use with the type of ceiling framing member(s) and lumin aire(s) shall also be permitted. So at first, the contractor had to field install these devices, but eventually manufacturers started to ship units with the disconnects installed. 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. Transformers of the Oil-Filled Type. 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. 1: See 225.26 for restrictions for support of overhead conductors. Construction. The next important item is 410.6, which states that all luminaires and lamp holders shall be listed. 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. Insulating joints that are not designed to be mounted with screws or bolts shall have an exterior metal casing, insulated from both screw connections. Chapter 3: Wiring Methods and Materials. Decorative Lighting and Similar Accessories. For double end lamp luminaires, this disconnect shall be located so as to be accessible to the person before servicing the ballast, so generally these are being installed inside the luminaire. 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. Lampholders installed in wet locations shall be listed for use in wet locations. 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.. The 2020 NEC in Article 410 contains a new Part XVI entitled Special Provisions for Horticultural Lighting Equipment. Luminaires (Fixtures) Near Combustible Material. Installed in Poured Concrete. Multiwire Branch Circuits. While it may be possible to list them together, I havent seen a fixture that is listed for another manufacturers trims. 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. Conductors that have insulation suitable for the temperature encountered shall be used. Properly Secured. To play this game about lighting, you need a sharp eye, a quick mind and a 2020 National Electrical Code book. 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. No unnecessary splices or taps shall be made within or on a luminaire.Informational Note: For approved means of making connec tions, see 110.14. 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. The canopyshall be permitted to include a section of raceway not over150 mm (6 in.) Where supplied by the ungrounded conductors of a circuit, the switching device of lampholders of the switched type shall simultaneously disconnect both conductors of the circuit. General-purpose electrical equipment includes heaters, switches, receptacles, and cords. Voltage. There is a concern that the lamps may fail in such a way that debris may fall onto people or combustible surfaces. D5(a) Multifamily Dwelling Served at 208Y/120 Volts, Three Phase, Example No. Live Parts. 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. Connection of utilization equipment to facilitate frequent interchange. No other externally wired luminaires shall be used. 1: A disconnecting means shall not be required for luminaires installed in hazardous. Exposure to Damage. Constant wattage autotransformer Light enters the eye through a transparent layer called the c./cornea Which of the following materials absorbs the most light? D5(b) Optional Calculation for Multifamily Dwelling Served at 208Y/120 Volts, Three Phase, Example No. 410.62 Cord-Connected Lampholders and Luminaires. The voltage to ground of any output terminals of the secondary circuit shall not exceed 7500 volts under any load conditions. Wet and Damp Locations. Lamps or lampholders shall be designed so that there are no exposed live parts when lamps are being inserted or removed. Parts VI through IX deal with items generally covered by the manufacturers of the luminaires. Introductioin to the National Electrical Code. All luminaires shall be marked with the maxi mum lamp wattage or electrical rating, manufacturers name, trademark, or other suitable means of identification. All of the electrical equipment and enclosures must be specifically approved for the location [682.10]. 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.) A toggle bolt pushed through a lay-in ceiling tile will likely not be adequate. The first requirement is that it is to be installed permanently and permanently connected to a branch circuit. Egress Luminaires. This becomes a challenge because insulation has the tendency to go everywhere if it is blown in; or if it is batt insulation, it may eventually fall onto a fixture. The first definition found in 410.2 is for closet storage space. Incandescent luminaires with open or partially enclosed lamps and pendant luminaires or lampholders shall not be permitted. A metal pole shall be provided with an equipment grounding terminal as follows: A pole with a handhole shall have the equipment grounding terminal accessible from the handhole. Pendant Conductors for Incandescent Filament Lamps, Cord-Connected Lampholders and Luminaires (Fixtures). Inherently Protected. 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. What about single pin lamps? The disconnecting means shall be located so as to be accessible to qualified persons before servicing or main taining the ballast. 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. 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. Exposed accessible terminals in lampholders and switches shall not be installed in metal luminaire canopies or in open bases of portable table or floor luminaires.Exception: Cleat-type lampholders located at least 2.5 m (8 ft) above the. This type of luminaire (fixture) must comply with Sections 410.65 through 410-72. See Figure 410.2. 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. Circuit Conductors. As we mentioned earlier, we have a definition for closet storage space. Construction of Flush and Recessed Luminaires (Fixtures), XIII. For the AHJ, this is once again one of those judgment calls. This term is not to be confused with luminary, which is defined as an important person. Where showcases are cord- connected, the secondary circuit(s) of each electric-discharge lighting ballast shall be limited to one showcase. All rights reserved. These are the 10 NEC Article 410 items we deem most important, based on the pervasiveness of confusion and the potential costs of same. from combustible material and at least 75 mm (3 in.) 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. Is a small pantry with a door in your kitchen considered a closet? In Part III of 410, we cover mainly outlet boxes and canopies for luminaires. Twisted or Cabled. These buildings concern unique environments that pose a high risk to multiple people. 410.68 Feeder and Branch-Circuit Conductors and Ballasts. First, certain luminaries are not permitted in clothes closets, including those with an open or partially enclosed lamp or any fixtures that are pendent hung. Luminaires shall be of such construction or installed so that the conductors in outlet boxes shall not be subjected to temperatures greater than that for which the conductors are rated.Branch-circuit wiring, other than 2-wire or multiwire branch circuits supplying power to luminaires connected together, shall not be passed through an outlet box that is an integral part of a luminaire unless the luminaire is identified for through-wiring.Informational Note: See 410.64(C) for wiring supplying power to luminaires connected together. Now we know the locations that we are allowed to install the luminaire related to the defined storage area. 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. 410.73 (G) Handbook Commentary Section 410.73 (G) was added to the 2005 Code with an effective date of January 1, 2008. . 410.52 Conductor Insulation. 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. Requirements for communications . The free lead at the end of a group of showcases has a female fitting not extending beyond the case. Luminaire studs that are not a part of outlet boxes, hickeys, tripods, and crowfeet shall be made of steel, malleable iron, or other material suitable for the applica tion. Receptacles and attachment plugs shall be permitted to be of a lower ampere rating than the branch circuit but not less than 125 percent of the luminaire full-load current. Thermal insulation shall not be installed above a recessed luminaire or within 75 mm (3 in.) Wiring of cranes and hoists. 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. A bushing or the equivalent shall be provided where flexible cord enters the base or stem of a porta ble luminaire. between the first case and the supply receptacle. 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? Exception No. 410.40 General. Raceway Fittings. 150 mm (6 in.) Exit Luminaires. 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.) 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. Part III. The load and the branch-circuit rating cannot exceed the rating of the track. Installation. These poles are likely to be touched by the general public, and if a fault occurs a person could be seriously injured or killed. This includes cables, conductors, wiring devices, and others. Luminaires shal be securely fastened to the ceiling framing member by mechanical means such as bolts, scres, or rivits. All luminaires installed in wet locations shall be marked, "Suitable for Wet Locations." Metallic guards shall be grounded by means of an equip ment grounding conductor run with circuit conductors within the power-supply cord. Bases, Incandescent Lamps. 410.14 Luminaires in Show Windows. Incandescent lumin aires shall have thermal protection and shall be identified as thermally protected. Feeder and branch-circuit conductors within 75 mm (3 in.) 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. 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]. Exception No. Location. C. Construction Specifications 330.104 Conductors All luminaires installed in wet locations shall be marked, "Suitable for Wet Locations ." Exception No. Refer to 310.15 or 310.60 for 14 AWG and larger conductors. The secondary circuit voltage shall not exceed 15,000 volts, nominal, under any load condition. Diffusers shall be resistant to thermal shock. The fittings cannot have general-purpose receptacles. This is usually not an issue on 6 or 7 inch recessed cans, as they are typically IC rated and easily checked. nec article 410 contains requirements for installingcushion foundation case instant-start lamps which of the following is an HD ballast category? Part X.