This month we will continue the series of articles covering basic electrical inspection items. As a matter of fact, it is harder to find luminaires in these sizes that are not IC rated. 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). 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. For example, if the illumination equipment is in a hazardous location, apply Articles 500 through 517. 150 mm (6 in.) The fixtures must be installed in a manner so that water will not enter or collect in the lampholder, wireway, etc. Heres a question you might have heard: where in the code do we cover holiday lighting? Introductioin to the National Electrical Code. Incandescent luminaires with open or partially enclosed lamps and pendant luminaires or lampholders shall not be permitted. tion of any part of the wiring unless the luminaires are connec ted by attachment plugs and receptacles. Electric-discharge lighting systems with an open- circuit voltage exceeding 1000 volts shall be listed and installed in conformance with that listing. Support. 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 addition to complying with the general requirements for luminaires, such equipment shall comply with Part XIII of this article. (B) Metal or Nonmetallic Poles Supporting Luminaires (Lighting Fixtures). Secondary Circuit(s). He has been a master electrician since 1988. 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. 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. 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. Fire-Resistant Construction. Replacement ballasts shall also have thermal protection integral with the ballast. Coves shall have adequate space and shall be located so that lamps and equipment can be properly installed and maintained. Thermal insulation shall not be installed above a recessed luminaire or within 75 mm (3 in.) This type of luminaire (fixture) must comply with Sections 410.65 through 410-72. Wet and Damp Locations. Luminaires shall be installed so that adjacent combustible material will not be subjected to temperatures in excess of 90C (194F). Recessed parts of a luminaire (fixture) that is not identified for contact with insulation must be at least 13 mm ( in.) 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. constant wattage autotransformer The luminaires shall be marked for dc operation. Exception No. Informational Note: For ampacity of fixture wire, maximum operating temperature, voltage limitations, minimum wire size, and other information, see Article 402. 110.2]. Type IC luminaires have different requirements. Listed. 410.62 Cord-Connected Lampholders and Luminaires. D8 Motor Circuit Conductors, Overload Protection, and Short-Circuit and Ground-Fault Protection, Example No. 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. Where supplied by a circuit having a grounded conductor, the grounded conductor shall be connected to the screw shell. Luminaires, portable luminaires, lamphold ers, and lamps shall have no live parts normally exposed to contact. Electrical Rating. for recessed fluorescent luminaires instal led in the wall or the ceiling. Equipped with Flanged Surface Inlet. What about single pin lamps? Adjacent to Combustible Materials. NEC Section 410.130(F)(5) Through-Wiring. Within Sight or Locked Type. Wiring on or within luminaires shall be neatly arranged and shall not be exposed to physical damage. 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). Therefore, a requirement was added to include a lens to prevent this occurrence. 1: Luminaires made of insulating material that is directly wired or attached to outlets supplied by a wiring method that does not provide a ready means for grounding attachment to an equip ment grounding conductor shall be made of insulating material and shall have no exposed conductive parts. You may need to comply with more stringent requirements for lights than those contained in Article 410. 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. There are two specific locations I want to cover in this article. 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. Parts VI through IX deal with items generally covered by the manufacturers of the luminaires. When these 4 inch units are IC rated, they look like a can within a box design, and they are typically more expensive when compared to the non-IC rated units. with a cover suitable for use in wet locations to provide access to the supply terminations within the pole or pole base.Exception No. 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. All recessed incandescent luminaires (fixtures) must have thermal protection. The electrical rating shall include the voltage and frequency and shall indicate the current rating of the unit, including the ballast, transformer, LED driver, power supply, or autotransformer. So at first, the contractor had to field install these devices, but eventually manufacturers started to ship units with the disconnects installed. 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. Wiring methods and materials supplying the luminaire(s) shall not be exposed within the cooking hood. Where supplied by the ungrounded conduc tors of a circuit, the switching device of auxiliary equipment shall simultaneously disconnect all conductors. Just another site Instant start lamps Which of the following is an HID ballast category? However, Ive had inspectors try to apply the requirements for closets in 410 to other locations. 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. Lighting track shall be supplied by a branch circuit having a rating not more than that of the track. Is a small pantry with a door in your kitchen considered a closet? Corrosive Locations. Luminaires Connected Together. 410.42 Luminaire(s) with Exposed Conductive Parts. 410.90 Screw Shell Type. These are very commonly used in residential construction and are a very important part of the residential inspection process. Properly Secured. 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. . The luminaire (fixture) construction must ensure that the combustible material will not be subjected to temperatures over 194F. Splices and Taps. 4 in.) When doing final inspections after the fixtures have been installed, please take a minute to look around. Title. Many times workers who are shocked dont die from the electrocution, but from the fall. However, the only requirements for luminarie installations in closets appear in section 410.16, which specifically addresses luminaires in clothes closets. nec article 410 contains requirements for installing nec article 410 contains requirements for installing Switching. 1.2 m (4 ft) in length shall have one additional support. Special bases or other devi ces shall be used for over 1500 watts. Informational Note: Combustible low-density cellulose fiber board includes sheets, panels, and tiles that have a density of 320 kg/m3(20 lb/ft3) or less and that are formed of bonded plant fiber material but does not include solid or laminated wood or fiberboard that has a density in excess of 320 kg/m3(20 lb/ft3) or is a material that has been integrally treated with fire-retarding chemicals to the degree that the flame spread index in any plane of the material will not exceed 25, deter mined in accordance with tests for surface burning characteris tics of building materials. 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. 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. D6 Maximum Demand for Range Loads, Example No. Luminaires (Fixtures) Near Combustible Material. Subject. nec article 410 contains requirements for installingcushion foundation case D2(b) Optional Calculation for One-Family Dwelling, Air Conditioning Larger than Heating [See 220.82(A) and 220.82(C)], Example No. If you see a cord plugged into a device on a trackthat is a violation. 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. 38. If you are tasked with doing inspections for parking lot lighting, you need to be familiar with a few items. Recessed luminaires (fixtures) can be installed in the wall or ceiling. 2: See 300.5(D) for protection of conductors. Such luminaires shall be permitted to have an additional guard. Lampholders installed in wet locations shall be listed for use in wet locations. Another requirement is that track fittings are not to be equipped with general purpose receptacles, which would make them more like a branch circuit. These must be unswitched lampholders. As we all know, heat rises, and a heat pocket is created within each fixture. Recessed Remote Ballasts. Closet Storage Space. General II. External wiring is not permitted except chain-supported luminaires (fixtures). or exceeds 400 mm (16 in.) Installation. For existing installed lumin aires without disconnecting means, at the time a ballast is replaced, a disconnecting means shall be installed. All luminaires, lampholders, and retrofit kits shall be listed. These changes can be found in Article 690, Solar Photovoltaic (PV) Systems. Luminaires shall be securely fastened to the ceiling framing member by mechanical means such as bolts, screws, or rivets. Installed in Poured Concrete. The secondary circuit voltage shall not exceed 15,000 volts, nominal, under any load condition. It is part of the National Fire Code series published by the National Fire Protection Association (NFPA), a private trade association. Special Provisions for Electric-Discharge Lighting Systems of 1000 Volts or Less.
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