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. Wet and Damp Locations. from lamp terminals shall not be required to be grounded. Individual showcases, other than fixed, shall be permitted to be connected by flexible cord to permanently installed receptacles, and groups of not more than six such showcases shall be permitted to be coupled together by flexible cord and separable locking-type connec tors with one of the group connected by flexible cord to a permanently installed receptacle. 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. 110.2]. 410.10 Luminaires in Specific Locations. Closet Storage Space. 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. 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. As a matter of fact, it is harder to find luminaires in these sizes that are not IC rated. Article 410 provides the requirements for installing luminaires, lampholders, lamps, and decorative lighting products on circuits greater than 30V. However, the only requirements for luminarie installations in closets appear in section 410.16, which specifically addresses luminaires in clothes closets. 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. Lampholders in Wet or Damp Locations. 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. 410.110 General. 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.) Im not going to cover every one of these items in detail, but please be aware that units installed in wet or damp locations have to be listed for the appropriate location and should prevent water from entering a wiring compartment. The design of the single-end luminaires is such that the non-spring tombstone (where the pin inserts into the lamp holder) has two contacts; one is the line voltage and the other is connected to the ballast. 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. Requirements for communications . 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. 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. Conductors that have insulation suitable for the temperature encountered shall be used. Connection of utilization equipment to facilitate frequent interchange. Fittings identified for use on lighting track shall be designed specifically for the track on which they are to be installed. Article 411 addresses lighting systems operating at 30V or less. Space for Conductors. Fastening. nec article 410 contains requirements for installing. See ANSI/ASTM E842015a,StandardTest Method for Surface Burning Characteristics of Building Materialsor ANSI/UL 7232013,Standard for Test for Surface Burning Characteristics of Building Materials. 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. nec article 410 contains requirements for installingcushion foundation case There are additional requirements for cable installed in cable tray and cable grouped together supported by messenger cable. You cannot have any part of a suspended fixture (i.e., the cord, pendant chain, etc.) D12 Park Trailer (See 552.47), ERP and Data Warehousing in Organizations: Issues and Challenges, ERP System Acquisition: A Process Model and Results From an Austrian Survey. He holds ten inspections certifications from IAEI and ICC. Bases, Incandescent Lamps. Another requirement is that track fittings are not to be equipped with general purpose receptacles, which would make them more like a branch circuit. More times than not, these custom one-of-a-kind units are not typically listed and labeled by a Nationally Recognized Testing Laboratory (NRTL). All luminaires, lampholders, and retrofit kits shall be listed. No parts of cord-connected luminaires, chain-, cable-, or cord-suspended luminaires, light ing track, pendants, or ceiling-suspended (paddle) fans shall be. (C) Luminaire (Fixture) Types Not Permitted. That zone is 3 feet horizontally and 8 feet vertically from the tub rim or the shower threshold. The installation requirements for motor control centers are covered in 110.26 (F), and air-conditioning and refrigerating equipment are covered in Article 440. Luminaire Stems. Exit Luminaires. Remember that the canopy will be included in the volume requirement, so the box and the canopy together provide the space. Deleted. . 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. 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. 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? Often we find shelves that hold cardboard boxes or garments that are easily ignited if in contact with a heat source. However, the requirements within this article are important to know and enforce. The issue here is that these luminaires have the possibility of generating a lot of heat, and the lamp is designed to be installed inside a metallic housing, which is then installed at the top of a room in the ceiling. Part XV. Listed. Everyone knows what a closet is, right? This type of luminaire (fixture) must comply with Sections 410.65 through 410-72. Where supplied by a circuit having a grounded conductor, the grounded conductor shall be connected to the screw shell. Electric-discharge lighting systems with an open- circuit voltage exceeding 1000 volts shall be listed and installed in conformance with that listing. General II. Through-Wiring. Lamp tie wires, mount ing screws, clips, and decorative bands on glass spaced at least 38 mm (112in.) The clearance between the luminaire (fixture) and nearest point of storage must be 150 mm (6 in.). Special Provisions for Flush and Recessed Luminaires (Fixtures). Lampholders of the screw shell type shall be of porcelain or other suitable insulating materials. The connected load on lighting track shall not exceed the rating of the track. 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. 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. Lighting track shall be supplied by a branch circuit having a rating not more than that of the track. Transformers of the oil-filled type shall not be used. 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. These are very commonly used in residential construction and are a very important part of the residential inspection process. (B) Luminaire (Fixture) Types Permitted. 02/08/2017. Refer to 310.15 or 310.60 for 14 AWG and larger conductors. NEC Article 410 contains requirements for installing _____. This requirement affects double ended fluorescent lamp luminaires. Temperature. The voltage to ground of any output terminals of the secondary circuit shall not exceed 7500 volts under any load conditions. General. Luminaires identified for through- wiring, as permitted by 410.21, shall be permitted to be used as a raceway. Additional Requirements. Many of the items have been created directly as a result of disaster conditions through history. Construction. Adequate airspace shall be provided between lamps and shades or other enclosures of combustible material. 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. with a cover suitable for use in wet locations to provide access to the supply terminations within the pole or pole base.Exception No. The first is related to locations in and near bathtub and shower areas. The last thing we want is to have a heat source that may ignite some material within the ceiling and cause an attic fire. You cannot support a fixture by the screw shell of a lampholder if it weighs more than 3 kg (6 lb.) This may create inspection issues, as Ive seen these cord- and plug-connected and hung in various ways that I didnt consider permanent. Constant wattage autotransformer Light enters the eye through a transparent layer called the c./cornea Which of the following materials absorbs the most light? Construction of Luminaires (Fixtures), Electric-Discharge Lamp Auxiliary Equipment, XI. Part XII. 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 2020 NEC in Article 410 contains a new Part XVI entitled Special Provisions for Horticultural Lighting Equipment. Part IV is titled Luminaire Supports. Temperature Limit of Conductors in Outlet Boxes. 410.42 Luminaire(s) with Exposed Conductive Parts. Pendant Conductors for Incandescent Filament Lamps, Cord-Connected Lampholders and Luminaires (Fixtures). In 410.16, Clearance and Installation, the requirements are covered depending on the type of luminaire. The incandescent fixture must have a completely enclosed lamp. Exception No. 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. 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. Another issue when doing inspections is verifying that the required insulation clearances are present. Also in part (B), the clearance to any insulation is required to be at least 3 inches. The grounding terminations within the poles are often difficult to install and also inspect. The NEC Wiki|powered by theWikiWP theme andWordPress. D8 Motor Circuit Conductors, Overload Protection, and Short-Circuit and Ground-Fault Protection, Example No. Informational Note: For ampacity of fixture wire, maximum operating temperature, voltage limitations, minimum wire size, and other information, see Article 402. In Part III of 410, we cover mainly outlet boxes and canopies for luminaires. The separation between cases is not in excess of 50 mm (2 in. Marking. 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. Recessed high-intensity luminaires designed to be installed in wall or ceiling cavities shall have thermal protec tion and be identified as thermally protected. The NEC specifies a few requirements for outlet boxes, inspection, suspended ceilings, luminaire (fixture) studs, insulating joints, raceway fittings, busways, and trees. 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. The main item I want to cover here is the poles used to mount area lighting. 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. Transformers shall be located so that adjacent combustible materials are not subjec ted to temperatures in excess of 90C (194F). Equipment that has an open- circuit voltage exceeding 1000 volts shall not be installed in or on dwelling occupancies. Cord Requirements. 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. Luminaires shall not be used as a raceway for circuit conductors unless they comply with 410.64(A), (B), or (C). Connection of portable luminaires, portable and mobile signs, or appliances. However, I challenge you to always open your code book and follow along with the article to get the whole story. These buildings concern unique environments that pose a high risk to multiple people. 410.46 Equipment Grounding Conductor Attachment. Splices and Taps. 410.130 (G) Disconnecting means. 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. Unless part of listed decorative lighting assemblies, pendant conductors shall not be smaller than 14 AWG for mogul-base or medium-base screw shell lampholders or smaller than 18 AWG for intermediate or candelabra-base lampholders. Luminaire Types Not Permitted. Support. Incandescent lumin aires shall have thermal protection and shall be identified as thermally protected. A metal pole with a hinged base shall have the hinged base and pole bonded together. 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. (D) Bathtub and Shower Areas. Outdoor luminaires and associated equipment shall be permitted to be supported by trees. The first definition found in 410.2 is for closet storage space. Such tap conductors shall be in suitable raceway or Type AC or MC cable of at least 450 mm (18 in.) Heavy-Duty Lighting Track. Prescriptive steps for connecting and disconnecting are provided and must be provided on the equipment. instant-start lamps which of the following is an HD ballast category? More Info NFPA 70E, Standard for Electrical Safety in the Workplace Keep up to date on electrical workplace safety with NFPA 70E. Disconnection. 4 in.) This includes cables, conductors, wiring devices, and others. Portable handlamps shall not be required to be grounded where supplied through an isolating transformer with an ungrounded secondary of not over 50 volts. Luminaires shall be installed so that adjacent combustible material will not be subjected to temperatures in excess of 90C (194F). Lampholders installed in wet locations shall be listed for use in wet locations. 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. There are two specific locations I want to cover in this article. All rights reserved. Grounding. Where supplied by the ungrounded conduc tors of a circuit, the switching device of auxiliary equipment shall simultaneously disconnect all conductors. The next important item is 410.6, which states that all luminaires and lamp holders shall be listed. Stranding. (A) General. 1: A disconnecting means shall not be required for luminaires installed in hazardous. 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. There are a couple of exceptions, so please review these. Please take time to read the scope of this article in 410.1. Parts of the luminaire exposed within the hood shall be corrosion resistant or protected against corrosion, and the surface shall be smooth so as not to collect deposits and to facilitate cleaning. Open-Circuit Voltage Exceeding 300 Volts. 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? The groun ded conductor, where connected to a screw shell lampholder, shall be connected to the screw shell. 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. Listing. 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). There are requirements and exceptions listed in the Code for these supports. 410.90 Screw Shell Type. 410.70 Combustible Shades and Enclosures. The details are found in 410.10(D), where we describe a zone in which no luminaire may be installed. Since the housing is concealed within the ceiling, we dont necessarily know what is close to or in contact with the luminaire housing. 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. See Figure 410.2. Transformers shall be installed as near to the lamps as practicable to keep the secondary conduc tors as short as possible. Recessed luminaires (fixtures) can be installed in the wall or ceiling. XII. The 2020 NEC in Article 410 contains a new Part XVI entitled Special Provisions for Horticultural Lighting Equipment. 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. 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. 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. Direct-Current Equipment. Luminaires shal be securely fastened to the ceiling framing member by mechanical means such as bolts, scres, or rivits. Separately mounted ballasts, trans formers, LED drivers, or power supplies that are listed for direct connection to a wiring system shall not be required to be additionally enclosed. Components of lighting track systems of different voltages shall not be inter changeable. If you are tasked with doing inspections for parking lot lighting, you need to be familiar with a few items. 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.
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